| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | monitoring | unknown | recommended | Use of CCME Guidelines for Mercury Risk Assessment | aquatic life | Users interested in assessing the risk of mercury and methylmercury to aquatic organisms are advised to use the Canadian Council of Ministers of the Environment (CCME) interim Canadian Water Quality Guideline (CWQG). | When assessing the risk of mercury and methylmercury to aquatic organisms | high |
| #Q002 | administrative | unknown | guidance | Requesting Supporting Materials | other | Some supporting materials may not be available online. If this is the case, you can request to view the materials in person. Get in touch with the office listed below to find out if materials are available. | If supporting materials are not available online | medium |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | unknown | guidance | Current Provincial Water Quality Objective for mercury | aquatic life, recreational water | MAC | 200 n/L | in a filtered water sample | maximum desirable concentrations of chemicals which ensure that surface waters are satisfactory for aquatic life and recreation | high |
| #P002 | chemical | unknown | guidance | Proposed Provincial Water Quality Objective (PWQO) for mercury | aquatic life, recreational water | MAC | 26 ng/L | Proposed PWQO. Note: Decision summary indicates this was ultimately not adopted. | maximum desirable concentrations of chemicals which ensure that surface waters are satisfactory for aquatic life and recreation | high |
| #P003 | chemical | unknown | guidance | Proposed Interim Provincial Water Quality Objective (iPWQO) for methylmercury | aquatic life, recreational water | MAC | 4 ng/L | Proposed iPWQO. Note: Decision summary indicates this was ultimately not adopted. | maximum desirable concentrations of chemicals which ensure that surface waters are satisfactory for aquatic life and recreation | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | PWQOs | Provincial Water Quality Objectives | high | |
| #D002 | CCME | Canadian Council of Ministers of the Environment | high | |
| #D003 | CWQG | interim Canadian Water Quality Guideline | high | |
| #D004 | Hg | Mercury | high | |
| #D005 | MeHg | methylmercury | high | |
| #D006 | LC50 | An LC50 is a calculated concentration of a substance that would be lethal to 50% of the tested organisms (e.g. trout) based on a laboratory experiment. | high | |
| #D007 | Provincial Water Quality Objectives (PWQOs) and Interim Provincial Water Quality Objectives (iPWQO) | Provincial Water Quality Objectives (PWQOs) and Interim Provincial Water Quality Objectives (iPWQO) are maximum desirable concentrations of chemicals which ensure that surface waters are satisfactory for aquatic life and recreation. | high | |
| #D008 | ERO | Environmental Registry of Ontario | high | |
| #D009 | CWQGs | Canadian Water Quality Guidelines | high | |
| #D010 | iPWQO | Interim Provincial Water Quality Objective | high | |
| #D011 | PWQO | Provincial Water Quality Objective | high | |
| #D012 | ng | nanogram | high | |
| #D013 | L | litre | high | |
| #D014 | ug | microgram | high | |
| #D015 | n | nanogram | high |