Ministry of Health
Effective: January 1, 2025
ISBN 978-1-4868-8749-1 [PDF]
© King's Printer for Ontario, 2025
Citation : Ontario. Ministry of Health. Recreational Water Reference Document, 2025. Toronto, ON: King's Printer for Ontario; 2025.
| Version 2 - Significant updates..........................................................................................5 |
|---|
| Preamble...............................................................................................................................5 |
| Disclaimer.............................................................................................................................5 |
| Introduction ..........................................................................................................................6 |
| Purpose.................................................................................................................................6 |
| Relevant Legislation ............................................................................................................7 |
| Recreational Water Overview..............................................................................................8 |
| Public health and safety......................................................................................................8 |
| Operation ..............................................................................................................................8 |
| Notification..........................................................................................................................9 |
| Permission in writing...........................................................................................................9 |
| Posting of inspection results.............................................................................................10 |
| Designated operator.........................................................................................................10 |
| Rendered inaccessible .....................................................................................................10 |
| Operator training...............................................................................................................11 |
| Operating as a Class A pool.............................................................................................12 |
| Pool liner colour................................................................................................................12 |
| Bather attire ......................................................................................................................13 |
| With necessary modification.............................................................................................13 |
| Lifeguard Certification and Supervision ..........................................................................14 |
| Lifeguard & assistant lifeguard certificates .......................................................................14 |
| Lifeguard training standard...............................................................................................14 |
| Lifeguard and assistant lifeguard supervision exemptions................................................14 |
| Admission Standards ........................................................................................................15 |
| Guardian supervision of bathers under age ten (10) in Class A pools..............................15 |
| Waterparks .......................................................................................................................16 |
| Wading pool supervision...................................................................................................16 |
| Wading pool supervision exception ..................................................................................17 |
| Aquatic Instruction and Instructor Certification..............................................................18 |
| First Aid...............................................................................................................................19 | |
|---|---|
| Certification.......................................................................................................................19 | |
| First aid kits | ......................................................................................................................20 |
| Water Parameters, Testing, Monitoring and Recording Frequencies............................21 | |
| Water chemistry parameters.............................................................................................22 | |
| Multiple pools on one recirculation system .......................................................................22 | |
| Frequency of operational checks for record keeping........................................................23 | |
| Additional record keeping | .................................................................................................24 |
| Frequency of operational checks......................................................................................24 | |
| Electronic Records | ...........................................................................................................26 |
| Manual Pool Test Kits.......................................................................................................26 | |
| Recirculating & Non-recirculating Spray/Splash Pads...................................................26 | |
| Recirculating splash pads.................................................................................................27 | |
| Local MOH or PHI approval..............................................................................................27 | |
| Non-recirculating splash pads | ..........................................................................................28 |
| Safety Equipment...............................................................................................................28 | |
| Anti-entrapment devices...................................................................................................28 | |
| Daily inspection of working emergency phone..................................................................29 | |
| Class B pools emergency phone and location..................................................................29 | |
| Back-up emergency communication devices....................................................................30 | |
| Buoy line in Class B pools where the slope is 8% or greater............................................30 | |
| Frequency and recording of inspections for additional safety-related equipment | .............31 |
| First aid kit and emergency communications device | ........................................................32 |
| Signage | ...............................................................................................................................32 |
| Other information or photos..............................................................................................32 | |
| Spray/splash pad signage | ................................................................................................33 |
| Additional signage recommended for Class C facilities | ....................................................34 |
| Floatation Tanks.................................................................................................................34 | |
| Alternative methods for filtering and disinfecting water in a public floatation tank | ............35 |
| References..........................................................................................................................36 | |
| Appendix A: Summary of Wading Pool Regulatory Requirements ...............................38 | |
| Appendix B: Summary of Spray/Splash Pad Regulatory Requirements.......................42 | |
| Appendix C: Summary of Requirements for Floatation Tanks | ......................................44 |
| Page # | Description |
|---|---|
| 9 | Provided clarification on corporations being designated as an operator |
| 11 | Added guidance regarding pool liner colour |
| 12 | Added guidance regarding bather attire |
| Page 16 & Appendix A | Added guidance regarding the wading pool supervision exception |
| 22 | Updated water chemistry parameters |
| 22 | Added guidance regarding multiple pools on one recirculation system |
| 25 | Added additional information on Oxidation Reduction Potential (ORP) |
| 26 | Added guidance on manual pool test kits |
| 30 | Provided clarification on buoy line requirements in Class B pools where the slope is 8% or greater |
| Page 34 & Appendix C | Added guidance for floatation tanks |
Reference Documents are program or topic-specific documents that provide information and best practices relevant to implementing the Ontario Public Health Standards: Requirements for Programs, Services, and Accountability (Standards), Protocols and Guidelines. 1 Reference Documents are not enforceable; the aim of Reference Documents is to provide professional staff employed by local boards of health support in operationalizing and implementing requirements outlined in the Standards, Protocols and Guidelines.
This reference document provides basic information only and is not complete or exact reproductions of the applicable legislation or regulation. It is not intended to provide legal advice. In the event of any conflict between this reference document and any legislation or regulation, the legislation or regulation shall prevail. Independent legal or professional advice should be obtained when determining the interpretation and application of any legislation or regulations. The Ontario Ministry of Health is not responsible for decisions made as a result of reliance on this document.
Ontario Regulation 565 Public Pools (Reg. 565 (Public Pools)) under the Health Protection and Promotion Act R.S.O 1990 (HPPA) was updated to include regulatory requirements for public pools, including novel pool types such as cold plunge pools and floatation pools, public spas and Class C facilities (wading pools, spray pads, splash pads, water slide receiving basins, and floatation tanks). 2 , 3
The Recreational Water Reference Document (RW-RD) represents generally accepted practices for the safe operation of a public recreational water facility and includes summary information about Reg. 565 (Public Pools).
The regulatory requirements are outlined and shaded to provide clarity on how they are stated in Reg. 565 (Public Pools).
Next to the headings, there is a legend with a ' ' (yes) or ' ' (no) indicating which facility the topic applies to.
The facilities are categorized as:
Appendices A, B, and C contain a summary of all regulatory requirements for Class C facilities.
The RW-RD does not provide all of the regulatory requirements; it is designed as an educational resource to assist with compliance to Reg. 565 (Public Pools). It should be used in conjunction with companion resource materials that together inform best practices in recreational water safety.
The RW-RD is intended to assist recreational water facility owners and operators and public health inspectors (PHIs) to reduce the risk of recreational water users acquiring recreational water illnesses or injuries, promote compliance with Reg. 565 (Public Pools) and promote best practices related to recreational water operations.
The RW-RD promotes safe recreational water operations by:
PHIs are trained to provide education and practical advice with regard to recreational water. Throughout this document, recreational water operators are encouraged to consult with
PHIs to work together toward shared safe recreational water outcomes.
The Ministry of Health (ministry) establishes provincial priorities including the Standards for public health programs and services delivered through local boards of health. Boards of Health are the delivery agencies for local public health programs and services. Through the application of legislation, boards of health across Ontario ensure recreational water facilities such as public pools, spas, cold plunge pools, floatation pools, floatation tanks, spray and splash pads, wading pools, and water slide receiving basins are safe for bathers and users.
PHIs are responsible for monitoring and ensuring compliance with Reg. 565 (Public Pools) and the HPPA. Operators are responsible for ensuring they are in compliance with relevant legislation and should speak with their local board of health for more information.
The requirements for public pools are outlined in the following legislation:
Recreational water facilities offer a wide range of health benefits including exercise, opportunities to socialize, and help people keep cool on hot summer days. However, if not operated properly they can also cause injury and/or illness. Reg. 565 (Public Pools) streamlines the regulated recreational water facilities into one regulation to provide consistency in health and safety standards.
Recreational water settings can be a host of bacteria, parasites, protozoa, and viruses that can cause enteric illnesses (illness in the stomach and intestines) as well as skin and ear infections. Adequate disinfection of water is one of the most important factors to help reduce risk of illness. Most disinfection equipment and procedures aim to reduce bacteria in the water, where free available chlorine or total bromine treatment is adequate. However, protozoa and parasites may require further treatment, like UV radiation to be completely deactivated. Without adequate treatment of the recirculated water stream, parasites such as Giardia and Cryptosporidium can present a hazard.
In addition to enteric illness, recreational water facilities can present a risk of drowning. Children have a higher susceptibility to swimming injuries, non-fatal and fatal drowning events in swimming pools. Other health risks associated with recreational water facilities include suction drain injuries, chemical injuries resulting in respiratory, skin, eye and ear conditions as well as injuries related to slipping and falling on wet surfaces.
When an owner or operator plans to open a recreational water facility regulated under Reg. 565 (Public Pools), it is important to initiate communication with the local board of health and local building and by-law departments early on in the planning phase. Early communication will ensure appropriate time is provided to:
Prior to construction or alterations, owners or operators should contact the local building and municipal by-law departments, the Electrical Safety Authority and/or Technical Standards and Safety Authority as applicable.
All operators of public pools, spas, and Class C facilities shall notify the local medical officer of health (MOH) or PHI of commencement of operation, a minimum of 14 days prior to (re)opening to allow time for inspection. This includes when the facility is reopening after being closed for more than four weeks, closed for construction, or is a new facility.
A letter, phone call, or online program (if available) may be acceptable processes for communication with the local board of health. Operators should speak to the PHI for more information on their process for notification. Refer to section 5 under Reg. 565 (Public Pool) for more information.
Requirement 5. (2) A person who proposes to open or re-open a pool or spa for use as a public pool or public spa after construction or alteration shall not open or re-open the pool or spa without first obtaining permission in writing from the medical officer of health or a public health inspector for the health unit where the pool or spa is situate.
Following construction or alteration, permission in writing from the local MOH or PHI is required for all facilities under Reg. 565 (Public Pools) prior to operating. Operators are encouraged to notify the local board of health prior to construction or alteration of a facility to ensure regulatory compliance will not be affected by the planned modifications. Operators should also contact the local board of health for more information on policies and processes regarding notification and written permission.
Please note that if a facility has been closed for more than four weeks and has not had any construction or alteration, written permission from the board of health is not required to open, however under the Recreational Water Protocol, 2019 (or as current), upon notification, boards of health are to conduct an inspection prior to opening after construction, alteration or closure of more than 4 weeks to determine compliance with the regulation. Early communication with the board of health for their notification and written permission policies is important to ensure a timely opening, whether after construction, alteration, or a seasonal closure.
Requirement 5. (4) Every operator of a public pool or public spa shall ensure that the results of any inspections conducted by a public health inspector are posted in accordance with the inspector's request.
This requirement provides information to the public that inspection results are available and how they can be accessed. Public disclosure of inspection results increases public transparency and allows the public to make informed decisions. The specifics of what operators are required to post on-site are provided by the PHI and based on direction from the board of health. All boards of health are also required under the Recreational Water Protocol, 2019 (or as current) to post inspection results of various regulated settings on their website.
Requirement 6. (1) Every owner of a public pool or public spa shall designate an operator.
The operator is a designated person who oversees the safe operation of the public pool, spa, or Class C facility. An operator will typically be a manager or someone who has care and custody of the recreational water facility during operation. More than one person may be designated as an operator of a facility. If an operator is not available on-site during an inspection, they should be easily accessible by an on-site employee or attendant. A corporation may be designated as an operator; however, there will need to be a specific person designated to complete the required operator tasks.
Requirement 6. (3) (b) Every owner and every operator shall ensure that except during the daily use period, the pool or spa is rendered inaccessible to persons who are not involved with its operation, inspection or maintenance.
Operators of public pools, public spas and wading pools must ensure that the facility is not
accessible to the public outside of operating hours. This may be achieved through the locking or gating of the facility to prevent public access, or by draining the water.
Requirement 6 (2) Every operator shall be trained in public pool and public spa operation and maintenance, filtration systems, water chemistry and all relevant safety and emergency procedures.
All operators of public pools and spas must be trained in the safe operation of the facility. Operators should consult their PHI as to how this requirement can be met. Existing training courses and resources available through many boards of health and sector providers may be used to meet this requirement.
As per the Recreational Water Protocol, 2019 (or as current), boards of health are required to ensure training materials are available and to promote recreational water facility training to owners and operators. Training should include information on:
PHIs may request additional training for operators if multiple infractions under Reg. 565 (Public Pools) are observed or if an operator cannot demonstrate the safe operation of the facility.
Requirement 6 (4) Despite paragraph 2 of section 2, a Class B pool may be operated as a Class A pool during periods when the pool is open solely for the uses stated in paragraph 1 of section 2 if the following conditions are met:
Under certain conditions, a Class B pool can operate as a Class A supervised pool for short periods of time, such as for a special event or occasion.
A Class B pool may operate as a Class A pool if the operator can demonstrate to the PHI that they will comply with the regulatory requirements outlined in section 6 (4) of Reg. 565 (Public Pools) for the uses stated in paragraph 1 of section 2. Requirements include the use of lifeguards and admission standards. Operators must notify the board of health of their intent to operate as a Class A pool.
Requirement 6. (6) (h) in the case of a pool, the submerged surfaces are white or light in colour, except for markings for safety or competition purposes.
Pools are required to have submerged surfaces be white or light in colour for safety purposes. Darker pool basins make it more difficult for a bather to judge water depth, which can lead to bather injury. Darker basins may also make it harder to see cracks in the pool surface, dirt, debris, and algal growth.
The US CDC's Model Aquatic Health Code outlines that light, pastel-coloured submerged surfaces should be consistent with Munsell colour value 6.5 or higher 8 .
Bathers are to be properly attired for swimming in clean garments that will not pose a drowning hazard (e.g., fabrics that absorb water and reduce buoyancy, loose flowing fabric that could restrict movement and/or cause entrapment). If bathers chose to bathe in attire not originally intended for bathing purposes, they should be clean and showered, with their attire donned, before entering or re-entering the deck, as outlined in the sign required in Section 19, paragraph 5.
The term 'with necessary modification' in the regulatory requirement applies to a Class C facility [see section 26.1 of Reg. 565 (Public Pools)]. This term does not provide any authority for an operator, MOH, or PHI to modify any specific details of, or grant an exemption from, a regulatory requirement.
Example of necessary modification:
Requirement 26.1 (1) The following provisions of this Regulation apply, with necessary modification, to every owner and every operator of a Class C facility:
[…]
For illustrative purposes only, the above requirements would be read as:
Notification 5. (1) At least 14 days before a [Class C facility] is put into use after construction or alteration, the owner or the owner's agent shall notify, in writing, the medical officer of health or a public health inspector for the health unit where the [Class C facility] is situate,
Public pools under Reg. 565 (Public Pools) are required to have lifeguard supervision as per the requirements in section 17. Reg. 565 (Public Pools) outlines specific lifeguard requirements and ratios. Lifeguards are trained and certified to supervise bathers and their physical safety in a pool.
Recognized lifeguard and assistant lifeguard certificates include certificates issued by the Lifesaving Society, Canadian Red Cross or an equivalent certificate that is approved by the Minister of Health and Long-Term Care. Certificates that are currently recognized are listed in Appendix D. These certificates, or a copy of these certificates, must be available at any time for the pool owner, operator and/or PHI to examine. Electronic records are adequate if readily available to the PHI during an inspection.
Ontario applies Lifeguard and Assistant Lifeguard Training Standards (Lifeguard Standard) based on currently accepted international and North American standards, for which lifeguard training certificates may be evaluated to determine equivalency. The Lifeguard Standard includes guiding principles and requirements for course quality, development, delivery and content. Examples of course requirements include instructor to participant ratio, first aid and cardiopulmonary resuscitation (CPR) certification, physical standards and rescue skills, pool supervision, facility analysis, and communication.
Recognized lifeguard and assistant lifeguard certificates must meet or exceed the minimum requirements of the Lifeguard Standard. Organizations not listed in Reg. 565 (Public Pools), who wish to have a lifeguard and assistant lifeguard training program considered for equivalency by the Minister of Health and Long-Term Care, may submit an application to the ministry.
Public pools may be exempt from lifeguard supervision in Reg. 565 (Public Pools) based on one of the following two (2) scenarios:
regulation posted in a conspicuous location, to notify the public that the pool is unsupervised.
OR
In accordance with the recommendations of Ontario's Chief Coroner, Reg. 565 (Public Pools) includes admission standards and swimming competency tests to better protect children and bathers.
Requirement S. 17. (21) Every owner and every operator of a Class A pool shall ensure that there is a process in place to ensure a guardian or designated person supervises children under 10 years of age. The process must include a swimming competency test and a method of communicating the requirements of the process.
Class A pools are required to have a process in place to ensure a guardian * or designated person supervises children under 10 years of age, known as an admission standard. However, Reg. 565 (Public Pools) does not set out specific admission standard requirements. The intent is to allow owners and operators of pools to determine admission standards that reflect the conditions of their pool. The aim of the admission standard is to improve the ability of lifeguards to provide overall pool supervision and reduce the risk of drowning deaths and injuries.
Operators may consult with industry experts such as the Lifesaving Society and Canadian Red Cross on best practices (e.g., swimming competency tests) in order to meet the regulatory requirements.
Operators must communicate the requirements of the admission standard process to users
that may be affected in advance. Operators may meet this requirement by posting information on the pool website, pool program guide, a recorded telephone message, pamphlets, and on-site signage.
Admission standards may not apply when a Class A pool is being used solely by one or more groups each not exceeding 25 in number for aquatic instruction, practice, or competition provided specific regulatory requirements are met. Refer to the section regarding Aquatic Instruction and Instructor Certification for more information.
Given the unique design features of waterparks and premises with multiple recreational water facilities, some of which may make traditional swim tests difficult to conduct, operators are required to assess the safety procedures in place for children under 10 years of age to ensure an adequate level of oversight for bather safety.
Wading pools, which are commonly used by young children, may reach up to 0.75 meters deep and can present a risk of drowning and enteric illness. Ensuring the water is appropriately treated and maintained safely is important as wading pools can be a source of bacteria, viruses and parasites. Operators must be able to promptly respond to any health and safety issues such as equipment failure or pool fouling. For recommended pool fouling responses by the Centers for Disease Control and Prevention (CDC), refer to Appendix E. 9
An attendant is required at wading pools with water depths between 15cm-75cm deep and are optional for those with a water depth of 15cm of less, provided they meet the prescribed requirements if there will not be an attendant present (see sections below). An attendant is not required on-site for spray/splash pads; however, guardians must be present to actively supervise and ensure the safety of their dependent using the facility.
Requirement S. 26.3 Every operator of a public wading pool shall,
Wading pool operators are required to have an attendant present at all times of operation for
public wading pools with a water depth between 15cm and 75cm deep. While not a requirement of Reg. 565 (Public Pools), attendants should be a minimum of 14 years of age and be:
Requirement S. 26.3 (2) Clause (1) (b) does not apply to a public wading pool with a water depth of 15cm or less if,
THIS POOL IS UNSUPERVISED. BATHERS UNDER TWELVE YEARS OF AGE ARE NOT ALLOWED WITHIN THE PUBLIC WADING POOL ENCLOSURE UNLESS ACCOMPANIED BY A PARENT OR HIS OR HER AGENT WHO IS NOT LESS THAN SIXTEEN YEARS OF AGE
Wading pools with a water depth of 15cm or less are able to be exempt from the requirements of an attendant provided that they meet all three requirements outlined in this section.
It is recommended that this safety plan be reviewed annually, at minimum, and throughout the season as needed. Additionally, there should be a method set out in the written safety plan for notifying the operator of an issue at the wading pool.
Requirement S. 26.4 (2) Every operator of a public spray pad or public splash pad shall post clearly visible signage in a conspicuous place notifying parents or guardians to supervise their children at all times when using the public spray pad or public splash pad.
Spray/splash pad operators are not required to have active supervision at the facility; however, they are required to have signage notifying parents or guardians that children must be supervised at all times when using the facility. Signage should be clearly visible. Sample messaging may include:
'Parents or guardians must continually supervise children'
For more information on signage, please refer to the section regarding spray/splash pads.
A public pool may be exempt from the bather supervision (i.e., lifeguard) ratios when the pool is being used solely for aquatic instruction, practice, competition or display, provided certain requirements are met.
Requirement S. 17 (16) A public pool is exempt from the safety supervision requirements of subsections (2), (3) and (21) if an operator ensures adequate supervision is provided during a period when the pool is being used solely by one or more groups each not exceeding 25 in number for aquatic instruction, practice, competition or display under the direct supervision of a certified aquatic instructor or coach, and the requirements in subsection (17) are met.
When a public pool is used for aquatic instruction (e.g., swimming lessons, aquatic exercises/ aquafit), the following requirements apply:
Requirement S. 17 (17) The following applies for the purposes of subsection (16):
To meet the above requirement, each class requires a certified instructor or coach holding a current lifeguard or assistant lifeguard certification or a lifeguard must be providing direct supervision of that class.
Requirement S. 17 (17) The following applies for the purposes of subsection (16):
For the purposes of Reg. 565 (Public Pools), a certificate from the National Coaching Certification Program (NCCP) from one of the aquatic sports is recognized as 'certified aquatic instructor'. A pool is exempt from providing lifeguards or assistant lifeguards if the aquatic coach also holds a recognized assistant lifeguard or lifeguard certificate. Aquatic coaches do not need to become certified lifeguards or assistant lifeguards if the operator ensures a lifeguard is on duty on the deck during the aquatic instruction, practice or competition.
First aid certificate requirements have been harmonized across Reg. 565 (Public Pools) and Ontario Regulation 503/17 (Recreational Camps) under the HPPA. 10
Requirement 17. (11) For the purpose of subsection (10), 'current first aid certificate' means a standard or higher first aid certificate that is dated not more than three years prior to the date on which the holder is on duty and that is issued by one of the following agencies:
Organizations not listed who wish to have their first aid certificate considered for equivalency may submit an application to the local MOH. The ministry will, if requested by the local MOH, assist with the review to determine equivalency.
In order to allow flexibility for operators, Reg. 565 (Public Pools) sets out the first aid supplies for the first aid kit. Operators should ensure a sufficient quantity of each to meet the needs of their facility. Note, operators are required to also comply with minimum requirements for workplace first aid kits under the Workplace Safety and Insurance Act, 1997 (see Reg. 1101, s. 1.). 10 Though the specific contents listed below are not required for wading pools or floatation tanks, they do need a first aid kit, and it is recommended that the prescribed content set out below also be included.
Requirement 20. (2) Every owner and every operator of a public pool or public spa shall ensure that, subject to subsection (3), there is provided, in places conveniently located for emergency use, a first aid kit containing at a minimum,
Operators may wish to refer to the Canadian Standards Association (CSA) standard for Workplace First Aid Kits (CSA Z1220 -17) which was developed in 2017. 12 This standard is part of an initiative to create a national system for workplace first aid in Canada. It specifies a classification system for workplace first aid kits and provides minimum requirements for their contents. It also includes guidance to organizations in carrying out a workplace first aid risk assessment to augment the minimum requirements as applicable. Below is an excerpt from the standard.
This Standard defines a new workplace first aid kit classification system. It follows a "scalability approach" that will allow organizations improved flexibility in meeting the unique needs of their specific worksites, while still ensuring minimum requirements are set forth based on the number of workers.
Three main classifications of workplace first aid kits are included:
Type 1: Personal; Type 2: Basic; Type 3: Intermediate.
Note: The intermediate kit is intended to be utilized within workplaces with a higher risk environment.
To allow for organizational variability the Type 2 and Type 3 kits have been further classified into small, medium and large. The sub-classifications of small, medium and large correspond to the number of workers at the worksite per shift ensuring a larger organization has more supplies on hand to satisfy the needs of a larger population
For more information see: https://www.csagroup.org/store/product/Z1220-17/
Operational checks and recordings of water parameters, equipment, and procedures are important in maintaining a safe recreational water facility. Many factors, including temperature, bather use, sunlight, and equipment failure can contribute to a change in water chemistry and ability to disinfect the water, provide bather comfort, and water clarity. It is important that an operator actively monitors these aspects of water quality throughout the day to address the variation of chemical balance that may occur. Operators must ensure that these records are available for PHI viewing for up to one year. Records can help operators provide due diligence in the event of a waterborne illness outbreak investigation.
The following table displays requirements of Reg. 565 (Public Pools) and ranges.
| Requirement (where applicable) | Range |
|---|---|
| Alkalinity | 60-180 ppm |
| pH | 7.2-7.8 |
| FAC for a pool | 0.5-10.0 ppm |
| FAC for a pool with cyanuric acid | 1.0-10.0 ppm |
| FAC for a cold plunge pool or floatation pool | 5.0-10.0 ppm |
| Bromine for a pool | 2.0-8.0 ppm |
| FAC for a spa or hot water pool that operates at a temperature of 35°C or greater | 5.0-10.0 ppm |
| Bromine for a spa or hot water pool that operates at a temperature of 35°C or greater | 5.0-10.0 ppm |
| ORP | 600-900 mV |
| Cyanuric acid | Max 60 ppm |
| Floatation pools | UV treatment system appropriately sized for the pool with an automatic shut off or audible or visual alarm in case of system failure. |
Requirement S. 7 (8) Every owner and every operator of a public pool or public spa shall ensure that the pool or spa water is treated with chlorine, a chlorine compound or a
bromine compound by means of a chemical feeder, and is maintained so that in every part of the pool or spa, at all times during the daily use period,
Where there are multiple pools that are treated through one shared recirculation system, each pool should be tested for water chemistry parameters to ensure that in every part of the pool the water chemistry is being maintained. In the event that the water chemistry does not meet the prescribed standards and the PHI deems that the pool needs to be closed, all pools on the same recirculation system should be closed.
The following two tables displays the frequency of operational checks as per Reg. 565 (Public Pools) † .
| Operational Check | Frequency |
|---|---|
| • Water clarity • Spas and hot water pools water temperature • Alkalinity • pH • FAC/TC • Bromine | 30 minutes prior to opening + every two hours or 30 minutes prior to opening + every four hours with automatic sensing device |
| ORP | Daily |
| Cyanuric acid | Weekly |
| Outlet covers | 30 days |
| Operational Check | Frequency |
|---|---|
| Emergency stop button | 30 days |
| GFCI test button | Min. 30 days or more often if manufacturer directions state |
|---|---|
| Emergency phone test | Daily (before opening) |
The following table displays additional records as per Reg. 565 (Public Pools)
| Additional Record | Frequency |
|---|---|
| Estimated number of bathers | Daily |
| Any emergencies, rescues or equipment breakdowns | Daily |
| Make-up water meter reading for pools, and if applicable, for spas | Daily |
| Spa drainage, inspection, and refill, if applicable | As required |
| Amount of chemicals added manually, if applicable | As required |
Requirement 7 (12) Where the pool or spa has an automatic sensing device, the requirements provided for in subsection (11) must be further checked and recorded at least every four hours until the daily use period has ended. For pools and spas without an automatic sensing device, the requirements provided for in subsection (11) must be further manually checked and recorded at least every two hours until the daily use period has ended.
The following requirements have been streamlined for operators of both public pools and spas.
parameters are within the correct range prior to bather use or will provide time to resolve any water quality issues.
An overview of the above requirements is found in the scenario for a pool that is open at 9:00am and closes at 6:00pm. Operators are encouraged to speak to the local board of health if they have any questions regarding the operation of their facility.
If the pool uses an Oxidation-Reduction Potential (ORP) sensing device, operators should record the ORP reading at the same time and frequency that the pH and sanitizer residual (ppm) are determined. The ORP reading must be between 600-900 mV. Further information on ORP is provided in Figure 3.
Figure 2: Example frequency of operational checks
Figure 3: Additional Information on ORP and Recreational Water Quality 13
The Oxidation Reduction Potential (ORP) is a useful supplement to other metrics such as pH and free available chlorine (FAC) as an indication of the swimming pool or spa water's ability to inactivate waterborne pathogens when using chlorine or bromine as the sanitizer. ORP is not itself a measurement of sanitizer concentration, but it provides complementary information that indicates whether water conditions are sufficient for controlling microbial contamination. An ORP level between 600-900 mV indicates that most pathogens will be rapidly inactivated.
The pH of the water affects the ratio of species (form) of chlorine or bromine which are present. The effectiveness of these species for pathogen inactivation varies, but standard
measurements (e.g., FAC concentration) do not take this into account. For example, the hypochlorous acid component of FAC is the major species of chlorine at lower pH values and is 100 times more potent for inactivating viruses and cysts, and 70 times more potent for inactivating E. coli compared to the hypochlorite ion. As the pH rises, less hypochlorous acid is present so survival times of pathogens are longer. Although the FAC measurement does not reflect the changing ratio of these species with different pH, the ORP does change and indicates the overall disinfection capabilities of the water.
Similarly, when cyanuric acid is used to stabilize chlorine in water that is exposed to direct sunlight, the disinfection effectiveness of free chlorine is reduced. This is not reflected in FAC measurements but is reflected with changes in the ORP values.
Although ORP is a useful addition to other metrics, it has limitations. The electrodes used to measure ORP must be kept clean and calibrated to provide accurate readings and can become saturated by high exposures to electro-chemical forces (e.g., if there is a sudden increase in sanitizer concentration near the electrode) and require several minutes to return representative readings.
The decision to permit electronic pool records, subject to the requirements of Reg. 565 (Public Pools), is left to the discretion of the local board of health. During inspections, the PHI may find that regulatory requirements set by Reg. 565 (Public Pools) are met by the electronic pool records.
Owners/ operators of public pools are required to have adequate test kits to accurately monitor the public pool water chemistry. Dip and read strips must not be used to measure chlorine, pH, or total alkalinity.
Due to the high salinity of floatation tanks and floatation pools, owners/operators should ensure that the test kits are capable of accurately verifying water chemistry parameters.
Spray/splash pads may vary in design and construction. Some splash pads have recirculating water systems in which water is filtered and disinfected and fresh make-up water added. Other systems do not recirculate water and instead it is drained as it is used. All operators must ensure that make-up water and source water is clean and free from
contamination.
Requirement S. 26.4 (1) Every operator of a public spray pad or public splash pad shall ensure that, where water is recirculating, the water is filtered and disinfected as approved by the local medical officer of health or a public health inspector for the health unit where the public spray pad or public splash pad is situate.
Recirculating splash pads and spray features that draw water directly from the pool (e.g., 'mushroom features', umbrellas, fountains) require both primary and secondary disinfection. The filtration and disinfection process for spray/splash pads must be approved by the MOH or PHI. The frequency at which the operator should test the water quality to confirm the system is working should also receive approval. Operators and PHIs should work together to implement a water monitoring plan appropriate for the facility. It is recommended that the following steps be implemented as part of a water monitoring plan:
Where an operator is seeking approval from the MOH or PHI on a new or emerging treatment system, the operator should consult with recreational water industry experts on a proposed design and other relevant information to bring forward to the MOH or PHI.
Requirement S. 7. (1) Every owner and every operator of a public pool or public spa shall ensure that the clean water and the make-up water are free from contamination that may be injurious to the health of the bathers.
Requirement S. 26.1 (2) For the purposes of applying subsection 7 (1) to public spray pads or public splash pads without a circulation system, 'make-up water' shall be read as 'source water'.
For splash pads that are non-recirculating, operators must ensure that the source water is safe for bather use. Operators may use a municipal water supply or other reliable source approved by the PHI.
Where the water is non-recirculating and held in a basin for more than 15 minutes, it should be treated and discharged directly to waste within a minimum of four hours.
The presence of safety equipment at recreational water facilities is important in protecting bather safety, preventing accidents, and assisting in emergency situations should they occur.
A top priority is to prevent accidents or injury from occurring at a recreational water facility and to be prepared when they do occur. Being prepared in the case of an emergency will allow for a quick response that may save a life or avoid significant injury. Reg. 565 (Public Pools) provides for adequate supervision, provision of safety equipment, first aid supplies, and emergency signage. Operators may also decide whether additional equipment is appropriate to ensure a high level of safety at the facility. It is important to maintain safety equipment in good condition and to inspect it regularly to ensure it is functioning appropriately. The availability of functioning life-saving equipment, including a phone, is key to ensuring a fast, effective response.
A public pool, spa, and wading pool designed with one singular drain (outlet) may pose a very serious hazard. One-drain design increases the risk of a suction hazard that traps bathers below water level and has led to serious injury and drowning.
The Ontario Building Code no longer permits the construction of pools and spas with a single main drain due to the risk of suction entrapment and drowning. If a public pool
contains only one main drain, pool operators should equip the pool with an anti-entrapment barrier to eliminate this dangerous condition.
Industry experts recommend additional anti-entrapment barriers or systems such as an unblockable drain, anti-entrapment outlet covers, a suction limiting vent system, vacuum release mechanisms, or an automatic pump shut-off.
It is recommended that owners or operators speak with an industry expert and PHI if the pool only has one drain that can cause entrapment.
Requirement S. 16 (2) Every operator shall ensure, before the public pool or spa is opened for use each day, that,
Public pool and spa operators are required to ensure that the emergency phone is tested and in working condition for every day the pool or spa is operating. This test is to be performed prior to opening, to confirm it is working for the operating day. A test may include direct communication with a test number, or if necessary, a direct communication with emergency services. Operators shall demonstrate to the PHI that the emergency phone system is working.
Requirement S. 16 (1) Every owner and every operator shall ensure that,
A Class B pool are required to have a working emergency phone within 30 meters from the pool to ensure contact with emergency services is not delayed. Operators should also be able to demonstrate the accessibility and operation of the phone at all times while the pool is
in operation.
As part of a pool operation plan, owners and operators should consider including additional back-up communication devices for additional safety. While it is not a substitute for the requirement of a telephone for emergency use, a cellular phone or other alarm systems to enhance the ability to communicate with emergency services may be used to ensure emergency services are contacted as quickly as possible in the event of an emergency. Operators who choose to have additional communication devices should also ensure they are operational similarly to the regulatory requirements. Staff on duty should be trained in the use of the emergency phone and additional devices.
Requirement S. 20. (1) Subject to subsection (3), every owner and every operator of a public pool other than an owner or operator of a wave action pool, and every owner and operator of a public spa that has an inner horizontal dimension greater than three metres, shall ensure that there are provided in places conveniently located for emergency use,
This requirement came from the Chief Coroner recommendation following a 2009 triple drowning at a Class B pool. The Ontario Building Code requires that pools with a slope of greater than 8% be equipped with the fittings for a safety buoy line. A buoy line has been identified as a measure to prevent a future drowning in an unsupervised Class B pool.
If a pool was built prior to the Ontario Building Code requirement for fittings and the original pool plans are not available, operators should calculate the slope to determine if it is greater than 8% (1:12). 14 To calculate the slope of the steepest part of the pool, divide the difference in depth between the shallow and deep end by the distance between the two points.
An operational plan for the buoy line may be developed by the operator that allows the buoy line to be removed during lane swimming provided that once the lane swimming is complete the buoy line will need to be immediately replaced and that when not in use it does not pose
a risk for other bathers. The operator should be regularly verifying that the buoy line is being used appropriately during periods of lane swimming and periods where there is no lane swimming.
The following regulatory requirement applies to all operators of recreational water facilities.
Requirement S. 26.5 Every operator of a facility to which this Regulation applies shall record the results of inspections of safety-related equipment present in the facility at a frequency determined by a public health inspector for the health unit where the facility is situate.
Where safety equipment is available, operators should develop a schedule to ensure regular monitoring and maintenance of safety equipment. The schedule can range from daily to weekly, should meet the needs of the specific equipment used by the facility and should be available for the PHI to review. If any equipment is found to be unsafe or not operational, it should be fixed or replaced immediately. In some cases, this may require the closure of the facility.
Class C facilities are encouraged to be equipped with safety-related equipment in order to protect the health and safety of bathers. Examples of equipment for operators to inspect include:
Requirement S. 26.3 Every operator of a public wading pool shall,
and
Requirement S. 26.0.2 (1) Every owner and operator of a floatation tank shall,
Wading pool and floatation tank operators are required to have a first aid kit as well as a device for emergency communications.
The use of signage is an important component of maintaining safe aquatic facilities. Public pool and spa signage requirements shall be posted in accordance with section 19 of Reg. 565 (Public Pools).
Requirement S. 19. Every owner and every operator of a public pool or public spa shall ensure that, at a minimum, the following notices and markings are displayed in the indicated places:
Pool operators may choose to provide additional signage to ensure the health and safety of those using the facility. Signs should not conceal or distract from information required by Reg. 565 (Public Pools). Additional signage should be in English and any other language that may be common to the location, including brail or photos. Examples of additional signage may include:
Requirement 26.4 (2) Every operator of a public spray pad or public splash pad shall post clearly visible signage in a conspicuous place notifying parents or guardians to supervise their children at all times when using the public spray pad or public splash pad.
Spray/splash pad operators are required to have signage notifying parents or guardians that children must be supervised at all times when using the facility. Signage should be clearly visible. Example messaging may include:
'Parents or guardians must continually supervise children'
In addition to the required signage under Reg. 565 (Public Pools) section 26.4 (2), operators of public wading pools and splash pads may wish to communicate facility rules or additional safety issues. Examples (for illustrative purposes only):
Additional signage recommended for Class C facilities includes:
Section 2.1 The class of Class C facility is established, being any of the following:
and
Requirement 26.1 (1) The following provisions of this Regulation apply, with necessary modification, to every owner and every operator of a Class C facility:
Floatation tanks are required to meet all the requirements outlined for Class C facilities. Additional floatation tank requirements are outlined in Section 26.0.2.
Requirement 26.0.2 (2) Despite clause (1) (b), alternative methods for filtering and disinfecting the water in a public floatation tank may be submitted for review and approval in writing by the local medical officer of health or a public health inspector for the health unit where the public floatation tank is situated.
Operators of floatation tanks may submit, in writing, alternative methods for filtering and disinfection floatation tank water. These are to be submitted in writing to the local medical officer of health or public health inspector for review and approval. The operator should consult with recreational water industry experts on a proposed design and other relevant information to bring forward to the local medical officer of health or public health inspector.
https://www.ontario.ca/laws/regulation/120332
(1) At least 14 days before a wading pool is put into use after construction or alteration, the owner or the owner's agent shall notify, in writing, the medical officer of health or a public health inspector for the health unit where the wading pool is situate,
(a) of the building permit number issued for the construction or alteration of the wading pool;
(2) A person who proposes to open or re-open a wading pool for use as a public wading pool after construction or alteration shall not open or re-open the wading pool without first obtaining permission in writing from the medical officer of health or a public health inspector for the health unit where the wading pool is situate.
(3) At least 14 days before the re-opening of a wading pool after any closure that lasts for more than four weeks, the owner or operator shall notify in writing the medical officer of health or a public health inspector for the health unit where the wading pool is situate,
(4) Every operator of a wading pool shall ensure that the results of any inspections conducted by a public health inspector are posted in accordance with the inspector's request.
(5) In this section, 'alteration' does not include routine maintenance or repair or replacement of existing equipment.
(3) Every owner and every operator of a wading pool shall ensure that the wading pool water is maintained free from visible matter that may be hazardous to the health or safety of the bathers.
(8) Every owner and every operator of a wading pool shall ensure that the wading pool water is treated with chlorine, a chlorine compound or a bromine compound by means of a chemical feeder, and is maintained so that in every part of the wading pool, at all times during the daily use period,
(9) The method used in determining the free available chlorine residual referred to in clause (8) (c) and, if applicable, paragraph 1 of subsection (10), shall be such that chloramines or other compounds that may be present in the wading pool do not affect the determination.
(12) Where the wading pool has an automatic sensing device, the requirements provided for in subsection (11) must be further checked and recorded at least every four hours until the daily use period has ended. For wading pools without an automatic sensing device, the requirements provided for in subsection (11) must be further manually checked and recorded at least every two hours until the daily use period has ended.
THIS POOL IS UNSUPERVISED. BATHERS UNDER TWELVE YEARS OF AGE ARE NOT ALLOWED WITHIN THE PUBLIC WADING POOL ENCLOSURE UNLESS ACCOMPANIED BY A PARENT OR HIS OR HER AGENT WHO IS NOT LESS THAN SIXTEEN YEARS OF AGE.
26.5 Every operator of a facility to which this Regulation applies shall record the results of inspections of safety-related equipment present in the facility at a frequency determined by a public health inspector for the health unit where the facility is situate.
(1) At least 14 days before a public spray pad or public splash pad is put into use after construction or alteration, the owner or the owner's agent shall notify, in writing, the medical officer of health or a public health inspector for the health unit where the public spray pad or public splash pad is situate,
(a) of the building permit number issued for the construction or alteration of the public spray pad or public splash pad;
(2) A person who proposes to open or re-open a public spray pad or public splash pad for use as a public spray pad or public splash pad after construction or alteration shall not open or re-open the public spray pad or public splash pad without first obtaining permission in writing from the medical officer of health or a public health inspector for the health unit where the public spray pad or public splash pad is situate.
(3) At least 14 days before the re-opening of a public spray pad or public splash pad after any closure that lasts for more than four weeks, the owner or operator shall notify in writing the medical officer of health or a public health inspector for the health unit where the public spray pad or public splash pad is situate,
(4) Every operator of a public spray pad or public splash pad shall ensure that the results of any inspections conducted by a public health inspector are posted in accordance with the inspector's request.
(5) In this section, 'alteration' does not include routine maintenance or repair or replacement of existing equipment.
26.4 (1) Every operator of a public spray pad or public splash pad shall ensure that, where water is recirculating, the water is filtered and disinfected as approved by the local medical officer of health or a public health inspector for the health unit where the public spray pad or public splash pad is situate.
(2) Every operator of a public spray pad or public splash pad shall post clearly visible signage in a conspicuous place notifying parents or guardians to supervise their children at all times when using the public spray pad or public splash pad.
26.5 Every operator of a facility to which this Regulation applies shall record the results of inspections of safety-related equipment present in the facility at a frequency determined by a public health inspector for the health unit where the facility is situate.
(1) At least 14 days before a public floatation tank is put into use after construction or alteration, the owner or the owner's agent shall notify, in writing, the medical officer of health or a public health inspector for the health unit where the public floatation tank is situate,
(a) of the building permit number issued for the construction or alteration of the public floatation tank;
(2) A person who proposes to open or re-open a public floatation tank for use as a public floatation tank after construction or alteration shall not open or re-open the public floatation tank without first obtaining permission in writing from the medical officer of health or a public health inspector for the health unit where the public floatation tank is situate.
(3) At least 14 days before the re-opening of a public floatation tank after any closure that lasts for more than four weeks, the owner or operator shall notify in writing the medical officer of health or a public health inspector for the health unit where the public floatation tank is situate,
(4) Every operator of a public floatation tank shall ensure that the results of any inspections conducted by a public health inspector are posted in accordance with the inspector's request.
(3) Every owner and every operator of a public floatation tank shall ensure that the public floatation tank water is maintained free from visible matter that may be hazardous to the health or safety of the bathers.
26.0.2 (1) Every owner and operator of a floatation tank shall,
(a) provide a first aid kit, a device for emergency communications and emergency equipment which is appropriate for use in the floatation tank;
(b) ensure that the water is treated with chlorine, a chlorine compound or bromine compound by means of a chemical feeder, and is maintained so that in every part of the floatation tank, at all times during the daily use period,
(c) test and record the requirements of clause (b) regarding the floatation tank water each operating day a minimum of 30 minutes prior to opening, and subsequently the lesser of every four hours or prior to each new bather;
(d) provide a filtration system suitable to the tank design that is capable of ensuring the water has three turnovers of the tank between each bather; and
(2) Despite clause (1) (b), alternative methods for filtering and disinfecting the water in a public floatation tank may be submitted for review and approval in writing by the local medical officer of health or a public health inspector for the health unit where the public floatation tank is situated.
26.5 Every operator of a facility to which this Regulation applies shall record the results of inspections of safety-related equipment present in the facility at a frequency determined by a public health inspector for the health unit where the facility is situate.
Current accepted lifeguard certificates:
Current accepted assistant lifeguard certificates
Formed fecal incidents pose a risk for spreading germs, including moderately chlorine tolerant Giardia . To disinfect the water following a formed fecal incident, aquatic staff should follow the steps below, which are based on killing or inactivating Giardia .
| Step 1 | Close the aquatic venue to swimmers. If you have multiple venues that use the same filtration system-all of the venues will have to be closed to swimmers. Do not allow anyone to enter the venue(s) until the disinfection process is completed. |
|---|---|
| Step 2 | Remove as much of the fecal matter as possible (for example, using a net or bucket) and dispose of the fecal matter in a sanitary manner. Clean and disinfect the item used to remove the fecal matter (for example, after cleaning, leave the net or bucket immersed in the water during disinfection). VACUUMING FECAL MATTER FROM THE WATER IS NOT RECOMMENDED. |
| Step 3 | Using unstabilized chlorine (for example, sodium hypochlorite), raise the water's free chlorine concentration to 2 parts per million (ppm), if less than 2 ppm. Maintain free chlorine concentration at 2 ppm and water at pH 7.5 or less for 25-30 minutes. Other concentrations or closure times can be used (see table below). Higher free chlorine concentration may be required in the presence of chlorine stabilizers, which are known to slow the rate at which free chlorine inactivates or kills germs. |
| Step 4 | Confirm that the filtration system is operating while the water reaches and is maintained at the proper free chlorine concentration and pH for disinfection. |
| Step 5 | Allow swimmers back into the water only after the disinfection process has been completed and the free chlorine concentration and pH are within the operating range. |
| Free Chlorine Concentration (ppm) | Disinfection Time |
|---|---|
| 1 | 45 minutes |
| 2 | 25-30 minutes |
| 3 | 19 minutes |
A diarrheal incident is a high-risk event for contamination caused by Cryptosporidium (or 'Crypto'), an extremely chlorine-tolerant parasite. Therefore, it is important that aquatic staff educate patrons not to swim when ill with diarrhea. To disinfect the water following a diarrheal incident, aquatic staff should hyperchlorinate, or raise the free chlorine concentration to a high concentration for a long period of time. If necessary, before attempting to hyperchlorinate, consult an aquatic professional to determine the feasibility, the most optimal and practical methods, and needed safety considerations.
| Step 1 | Close the aquatic venue to swimmers. If you have multiple venues that use the same filtration system-all of the venues will have to be closed to swimmers. Do not allow anyone to enter the venue(s) until the hyperchlorination process is completed. |
|---|---|
| Step 2 | Remove as much of the fecal matter as possible (for example, using a net or bucket) and dispose of the fecal matter in a sanitary manner. Clean and disinfect the item used to remove the fecal matter (for example, after cleaning, leave the net or bucket immersed in the water during hyperchlorination). VACUUMING FECAL MATTER FROM THE WATER IS NOT RECOMMENDED. |
| Step 3 | Using unstabilized chlorine (for example, sodium hypochlorite), raise the water's free chlorine concentration (see Table below) and maintain water at pH 7.5 or less. |
| Step 4 | Achieve a concentration × time (CT) inactivation value of 15,300 to inactivate or kill Crypto. The CT inactivation value refers to the concentration of free chlorine in parts per million (ppm) multiplied by time in minutes at a specific pH and temperature. |
| Step 5 | Confirm that the filtration system is operating while the water reaches and is maintained at the proper free chlorine concentration and pH for hyperchlorination. |
| Step 6 | Backwash the filter thoroughly after reaching the CT inactivation value. Be sure to discharge directly to waste and according to state or local regulations. Do not return the backwash through the filter. Where appropriate, replace the filter media. |
|---|---|
| Step 7 | Allow swimmers back into the water only after the required CT inactivation value has been achieved and the free chlorine concentration and pH are within the operating range. |
Use the formula below to calculate the time required to inactivate or kill Cryptosporidium .
| Concentration × time (CT) inactivation value | ÷ | Free chlorine concentration (parts per million [ppm]) | Time (in minutes) |
|---|---|---|---|
| 15,300 | ÷ | 20 | = 765 (or 12.75 hours) |
| 15,300 | ÷ | 10 | = 1,530 (or 25.5 hours) |
A diarrheal incident is a high-risk event for contamination caused by Cryptosporidium (or 'Crypto'), an extremely chlorine-tolerant parasite. Therefore, it is important that aquatic staff educate patrons not to swim when ill with diarrhea. To disinfect the water following a diarrheal incident, aquatic staff should hyperchlorinate, or raise the free chlorine concentration to a high concentration for a long period of time. If necessary, before attempting to hyperchlorinate, consult an aquatic professional to determine the feasibility, the most optimal and practical methods, and needed safety considerations.
| Step 1 | Close the aquatic venue to swimmers. If you have multiple venues that use the same filtration system, all of the venues will have to be closed to swimmers. Do not allow anyone to enter the venue(s) until the hyperchlorination process is completed. |
|---|---|
| Step 2 | Remove as much of the fecal matter as possible (for example, using a net or bucket) and dispose of the fecal matter in a sanitary manner. Clean and disinfect the item used to remove the fecal matter (for example, after cleaning, leave the net or bucket immersed in the water during hyperchlorination). VACUUMING FECAL MATTER FROM THE WATER IS NOT RECOMMENDED. |
| Step 3 | Using unstabilized chlorine (for example, sodium hypochlorite), raise the water's free chlorine concentration and maintain water at pH 7.5 or less. |
| Step 4 | Hyperchlorinate. Chlorine stabilizer slows the rate at which free chlorine inactivates or kills Crypto, and the more stabilizer there is in the water the longer it takes to kill Crypto. If the cyanuric acid concentration is 1-15 parts per million (ppm) • Raise the free chlorine concentration to 20 ppm for 28 hours or • Raise the free chlorine concentration to 30 ppm for 18 hours or • Raise the free chlorine concentration to 40 ppm for 8.5 hours If the cyanuric acid concentration is more than15 ppm, lower the concentration to 1-15 ppm by draining partially and adding fresh water without chlorine stabilizer before attempting to hyperchlorinate. |
|---|---|
| Step 5 | Confirm that the filtration system is operating while the water reaches and is maintained at the proper free chlorine concentration and pH for hyperchlorination. |
| Step 6 | Backwash the filter thoroughly after hyperchlorination has been completed. Be sure to discharge directly to waste. Do not return the backwash through the filter. Where appropriate, replace the filter media. |
| Step 7 | Allow swimmers back into the water only after hyperchlorination has been completed and the free chlorine concentration and pH are within the operating range. |