| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | prohibition | operational | recommended | Marine Chloride Fluctuation Limit | aquatic life | To protect aquatic life in marine environments, human activities should not cause the chloride concentration to fluctuate by more than 10% of the natural background expected at that time and depth. | marine environments | high |
| #Q002 | administrative | operational | recommended | Application of Guidelines Factors | aquatic life | These factors should be considered when the water quality guidelines are applied to assess environmental impacts of chloride. | when assessing environmental impacts of chloride | high |
| #Q003 | administrative | operational | guidance | Consideration of Background Levels | aquatic life | It is important to carefully consider background levels of chloride in the local aquatic environment and to take these data into consideration when applying the WQGs. | when applying the WQGs | high |
| #Q004 | administrative | operational | recommended | Methodology for Site-Specific Objectives | aquatic life, other | To adjust the guidelines recommended here to take local conditions into consideration, the BC Ministry of Environment, Lands and Parks publication, "Methods for Deriving Site-Specific Water Quality Objectives in British Columbia and Yukon" should be followed (MacDonald 1997). | when adjusting guidelines to take local conditions into consideration | high |
| #Q005 | monitoring | operational | mandatory | Chronic Concentration Averaging Methodology | aquatic life | Arithmetic mean is computed from five weekly samples collected over a 30-day period. | When calculating the 30-d average concentration for freshwater aquatic life | high |
| #Q006 | prohibition | operational | recommended | Marine Salinity Fluctuation Limit | aquatic life | To protect marine aquatic life in marine environments, human activities should not cause the salinity (expressed as parts per thousand) of marine and estuarine waters to fluctuate by more than 10% of the natural salinity expected at that time and depth. | marine and estuarine environments | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | aesthetic | recommended | Chloride | drinking water | AO | <= 250 mg/L | Drinking Water guideline recommended by the Canadian Council of Ministers of the Environment to protect aesthetic qualities. | Total concentration | high |
| #P002 | chemical | health | recommended | Chloride | aquatic life | MAC | <= 150 mg Cl/L | To protect freshwater aquatic life from chronic effects. | 30-d Average Concentration | high |
| #P003 | chemical | health | recommended | Chloride | aquatic life | MAC | <= 600 mg Cl/L | To protect freshwater aquatic life from acute and lethal effects. | Maximum concentration at any time | high |
| #P004 | chemical | health | recommended | Chloride | aquatic life | requirement | <= 10 % | To protect aquatic life in marine environments. | Human activities should not cause the chloride concentration to fluctuate by more than 10% of the natural background expected at that time and depth. | high |
| #P005 | physical | health | recommended | Salinity | aquatic life | requirement | <= 10 % | To protect marine aquatic life in marine environments. | Human activities should not cause the salinity (expressed as parts per thousand) of marine and estuarine waters to fluctuate by more than 10% of the natural salinity expected at that time and depth. | high |
| #P006 | chemical | health | recommended | Chloride | agricultural water | requirement | <= 100 mg/L | The water quality guideline for irrigation purposes. | Sensitive plants | high |
| #P007 | chemical | health | recommended | Chloride | agricultural water | requirement | <= 700 mg/L | Chloride-tolerant plants can be irrigated with water up to 700 mg chloride/L. | Tolerant plants | high |
| #P008 | chemical | health | recommended | Chloride | agricultural water | requirement | <= 600 mg/L | The water quality guideline for livestock watering is 600 mg chloride/L. | high | |
| #P009 | chemical | health | recommended | Total soluble salts | agricultural water | requirement | <= 1000 mg/L | Concentration of total soluble salts in water used for livestock watering should not exceed 1000 mg/L. | Livestock health may become impaired at total soluble salt concentrations of 1000 to 3000 mg/L. | high |
| #P010 | chemical | health | recommended | Chloride | other | requirement | <= 600 mg/L | The chloride concentration in waters that are utilized by wildlife should not exceed 600 mg/L. | high | |
| #P011 | chemical | unknown | guideline | Average chloride concentration | aquatic life | requirement | 600 mg/L | Existing water quality criteria for chloride (State of Kentucky: USA) | Freshwater Aquatic Life | high |
| #P012 | chemical | unknown | guideline | Maximum chloride concentration | aquatic life | MAC | 1200 mg/L | Existing water quality criteria for chloride (State of Kentucky: USA) | Freshwater Aquatic Life | high |
| #P013 | chemical | unknown | guideline | Average chloride concentration | aquatic life | requirement | 230 mg/L | Existing water quality criteria for chloride (USA) | Freshwater Aquatic Life | high |
| #P014 | chemical | unknown | guideline | Maximum chloride concentration | aquatic life | MAC | 860 mg/L | Existing water quality criteria for chloride (USA) | Freshwater Aquatic Life | high |
| #P015 | chemical | unknown | guideline | Drinking water | drinking water | requirement | 250 mg/L | Existing water quality criteria for chloride (Canada) | high | |
| #P016 | chemical | unknown | guideline | Irrigation water | agricultural water | requirement | 100-700 mg/L | Existing water quality criteria for chloride (Canada) | high | |
| #P017 | chemical | unknown | guideline | Livestock | agricultural water | requirement | 1000 mg/L | Existing water quality criteria for chloride (Canada) | high | |
| #P018 | chemical | unknown | guideline | Wildlife | other | requirement | 1000 mg/L | Existing water quality criteria for chloride (Canada) | high | |
| #P019 | chemical | unknown | guideline | Marine water | aquatic life | requirement | +/-10 ppt | Existing water quality criteria for chloride (Canada) | high | |
| #P020 | chemical | unknown | guideline | Average chloride concentration | aquatic life | requirement | 230 mg/L | Existing water quality criteria for chloride (Quebec) | Freshwater Aquatic Life | high |
| #P021 | chemical | unknown | guideline | Maximum chloride concentration | aquatic life | MAC | 860 mg/L | Existing water quality criteria for chloride (Quebec) | Freshwater Aquatic Life | high |
| #P022 | chemical | unknown | guideline | Drinking water | drinking water | requirement | 250 mg/L | Existing water quality criteria for chloride (Quebec) | high | |
| #P023 | chemical | unknown | guideline | Irrigation water | agricultural water | requirement | 100-700 mg/L | Existing water quality criteria for chloride (Quebec) | high | |
| #P024 | chemical | unknown | guideline | Livestock | agricultural water | requirement | 1000 mg/L | Existing water quality criteria for chloride (Quebec) | high | |
| #P025 | chemical | health | guideline | Average chloride concentration (48-hour window) | aquatic life | requirement | 600-1200 mg/L | Criteria for chloride in the State of Kentucky for protecting warmwater species of aquatic life. | Chloride concentrations may average between 600-1,200 mg/L for up to 48 hours. | high |
| #P026 | chemical | health | guideline | Chloride chronic increase limit | aquatic life | requirement | <= 10 mg/L | Quebec additional requirement for chronic chloride levels. | In addition to the chronic toxicity threshold (230 mg/L), any increases must not exceed 10 mg/L. | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | water quality guideline | a maximum and/or a minimum value for a physical, chemical or biological characteristic of water, sediment or biota, which should not be exceeded to prevent detrimental effects from occurring to a water use under given environmental conditions. | high | |
| #D002 | NaCl | sodium chloride | high | |
| #D003 | CCME | Canadian Council of Ministers of the Environment | high | |
| #D004 | acute toxicity tests | those in which duration of exposure was less than seven days | high | |
| #D005 | LOEC | lowest observed effect concentration | high | |
| #D006 | USEPA | United States Environmental Protection Agency | high | |
| #D007 | CEPA toxic | entering the environment in a quantity or concentration or under conditions that: 1. Have or may have an immediate or long-term harmful effect on the environment or its biological diversity; 2. Constitute or may constitute a danger to the environment on which life depends; or, 3. Constitute or may constitute a danger in Canada to human life or health. | high | |
| #D008 | ACR | acute:chronic ratio | high | |
| #D009 | chronic exposures | toxicity tests of seven or more days in duration | high | |
| #D010 | average | Arithmetic mean is computed from five weekly samples collected over a 30-day period. | high | |
| #D011 | EC50 | effective concentration | high | |
| #D012 | LC50 | lethal concentration | high | |
| #D013 | CEPA | Canadian Environmental Protection Act | high | |
| #D014 | conservative | not degraded in the environment and tend to remain in solution, once dissolved. | high | |
| #D015 | halogen | salt-forming | high | |
| #D016 | ppt | parts per thousand | high | |
| #D017 | chloride compounds | those containing a chlorine atom as a negatively charged anion (Cl -), such as sodium chloride (NaCl). | high | |
| #D018 | WQG | Water Quality Guideline | high | |
| #D019 | NWRI | National Water Research Institute | high | |
| #D020 | KCl | potassium salts | high | |
| #D021 | raw drinking water | ambient raw water source before it is diverted or treated for domestic use. | high | |
| #D022 | Euryhaline organisms | organisms [that] can withstand salinity fluctuations, either by tolerating changes in internal osmotic pressure or by maintaining a constant osmotic pressure through osmoregulation. | high | |
| #D023 | Cl- | negatively charged anion of a chlorine atom | high | |
| #D024 | road salt | mixtures of compounds including calcium chloride, magnesium chloride, and potassium chloride (most often sodium chloride), applied to roadways to prevent traffic accidents. | high |