| #Q001 | treatment | health | recommended | General Disinfection Recommendation | wastewater, other | All domestic reclaimed water used for toilet and urinal flushing should be disinfected. | Domestic reclaimed water used for toilet and urinal flushing | high |
| #Q002 | treatment | health | guidance | Primary Disinfection Means | wastewater, other | Primary disinfection may be accomplished by any chemical, physical or biological means that results in the destruction, inactivation or removal of microorganisms. | Primary disinfection of domestic reclaimed water | high |
| #Q003 | treatment | health | recommended | Secondary Disinfection Recommendation | wastewater, other | Chlorination should be used at least as a secondary means of disinfection to maintain chlorine residual within the storage system (if applicable) and the distribution/plumbing system. | Storage system and distribution/plumbing system | high |
| #Q004 | operational | operational | recommended | Management Program Criteria | wastewater, other | A management program, including treatment technologies in place, should consistently achieve the reclaimed water quality criteria shown in Table 1. | | high |
| #Q005 | monitoring | operational | guidance | TSS or Turbidity Monitoring | wastewater, other | Only one of TSS and turbidity needs to be monitored in a given system. | Measured prior to disinfection point | high |
| #Q006 | monitoring | health | guidance | E. coli or Thermotolerant Coliforms Monitoring | wastewater, other | Only one of Escherichia coli and thermotolerant coliforms needs to be monitored in a given system. | | high |
| #Q007 | monitoring | health | recommended | Greywater Coliform Indicator Recommendation | wastewater, other | For systems reclaiming only greywater, it is recommended that thermotolerant coliform values be utilized instead of E. coli. | Systems reclaiming only greywater | high |
| #Q008 | treatment | health | mandatory | Chlorine Residual Presence Requirement | wastewater, other | Disinfection is essential to this process, and a chlorine residual must be present in the domestic reclaimed water storage system and distribution system piping. | Domestic reclaimed water storage system and distribution system piping | high |
| #Q009 | monitoring | operational | recommended | Start-up Sampling Frequency | wastewater, other | During the first 30-day period of operation (i.e., start-up), a minimum of five samples should be collected and tested for all of the guideline water quality parameters listed in Table 1. | During the first 30-day period of operation (i.e., start-up) | high |
| #Q010 | monitoring | operational | recommended | Start-up Sampling Interval | wastewater, other | The samples should be collected at regular intervals during the 30-day period. | During the first 30-day period of operation (i.e., start-up) | high |
| #Q011 | monitoring | operational | mandatory | Start-up Monitoring Continuation | wastewater, other | This monitoring frequency needs to be continued until the system is shown to meet all of the guideline values in Table 1. | If the system has not yet been shown to meet all guideline values in Table 1 | high |
| #Q012 | monitoring | operational | guidance | Reduction of Monitoring Frequency | wastewater, other | When a 30-day sampling period shows that the treated domestic reclaimed water meets the guideline values for all the parameters, the monitoring frequency can be reduced for some parameters. | When a 30-day sampling period shows that the treated domestic reclaimed water meets the guideline values for all the parameters | high |
| #Q013 | monitoring | operational | recommended | Ongoing Monitoring Requirements | wastewater, other | Monitoring frequencies for residual chlorine and for turbidity or TSS (where possible) should be maintained, whereas frequencies for E. coli or thermotolerant coliforms and BOD5 can be reduced to semi-annual or annual monitoring (depending on the jurisdiction) to verify that the system is still working effectively. | After successful 30-day start-up verification | high |
| #Q014 | monitoring | operational | recommended | Ongoing Monitoring Sample Minimums | wastewater, other | During semi-annual or annual monitoring, a minimum of two samples should be taken for each parameter being analysed. | During semi-annual or annual monitoring | high |
| #Q015 | monitoring | operational | recommended | Ongoing Monitoring Sample Interval | wastewater, other | These samples should be collected at least an hour apart to provide a better estimate of the water quality being produced. | During semi-annual or annual monitoring | high |
| #Q016 | corrective_action | operational | recommended | Follow-up Sampling on Exceedance | wastewater, other | If both samples exceed the median or any sample exceeds the maximum, follow-up samples should be collected to confirm the exceedance. | If both samples exceed the median or any sample exceeds the maximum | high |
| #Q017 | corrective_action | operational | recommended | Response to Confirmed Exceedance | wastewater, other | Confirmation of an exceedance of any guideline parameter should result in the system returning to monitoring as outlined for systems during the 30-day start-up monitoring period and an investigation into the cause of the exceedance. | Upon confirmation of an exceedance of any guideline parameter | high |
| #Q018 | operational | operational | guidance | Continued Operation During Investigation | wastewater, other | If the guideline median values are exceeded, but all samples are less than the maximum values, the system can continue to be used during the investigation of the water quality. | If the guideline median values are exceeded, but all samples are less than the maximum values | high |
| #Q019 | corrective_action | health | recommended | System Bypass on Maximum Exceedance | wastewater, other | If the maximum values have been exceeded for any parameter, the system should be bypassed until the problem has been shown to be corrected and the water quality returns to meeting the guideline values. | If the maximum values have been exceeded for any parameter | high |
| #Q020 | administrative | unknown | guidance | Greywater Default Pathogen Values | wastewater, other | In the absence of default values for greywater, the wastewater default values can be used. | Calculating microbiological treatment goals for greywater sources | medium |
| #Q021 | design | operational | guidance | Alternative Pathogen Data Usage | wastewater, other | System-specific data on pathogen concentrations can be gathered and used as an alternative to the default values. | Calculating log removal/inactivation requirements as an alternative to default wastewater values | high |
| #Q022 | monitoring | treatment | mandatory | Total Chlorine Residual Compliance Point | other | Measured at the point where the treated effluent enters the distribution/plumbing system. | Applicable specifically to total chlorine residual monitoring | high |
| #Q023 | monitoring | reporting | guideline | General Compliance Point for Quality Limits | other | Unless otherwise noted, recommended quality limits apply to the reclaimed water at the point of discharge from the treatment facility or treatment unit. | General application for all Table 1 parameters unless specific footnotes state otherwise | high |