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Table","source_url":"https://ccme.ca/en/results/176,177,178,1,2,287,3,4,5,6,7,179,8,174,9,10,12,180,14,181,182,183,15,16,17,300,19,20,21,289,242,23,24,295,27,28,194,288,59,60,61,63,62,184,65,66,67,69,70,71,72,73,74,80,81,216,291,30,31,32,41,47,42,48,113,114,169,171,170,185,110,83,77,78,283,79,109,104,52,53,290,85,76,86,100,87,88,89,234,91,154,93,94,96,99,186,187,97,102,112,292,40,119,125,293,121,188,122,123,124,126,127,129,131,239,233,189,135,130,133,136,137,138,107,29,297,103,51,235,190,139,140,141,143,144,146,147,148,39,58,284,161,302,303,162,191,294,163,164,165,167,168,172,173,175,101,192,193,196,197,198,199,201,217,202,203,204,207,218,208,209,115,36,37,38,45,299,106,56,57,211,212,213,214,215,221,222,108,151,236,33,34,35,43,44,298,55,105,54,152,223,153,219,225,226,296,229/ch/1,2,3,4/csv","source_sha256":"f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"sols","column":"industriel"}},{"id":"5aefe0c79fe145e2","parameter":"Nickel","value":"CWQG (µg/L) = e^{0.76[ln(hardness)]+1.06}","unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:7440-02-0","place":["CA"],"conditions":["receiving_water is freshwater","long-term exposure: CCME's long-term guideline"],"cite":{"instrument":"ca_ccme_wqg_aquatic","title":"CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary Table (as served 2026-09-24; each guideline carries its own year)","source_url":"https://ccme.ca/en/results/176,177,178,1,2,287,3,4,5,6,7,179,8,174,9,10,12,180,14,181,182,183,15,16,17,300,19,20,21,289,242,23,24,295,27,28,194,288,59,60,61,63,62,184,65,66,67,69,70,71,72,73,74,80,81,216,291,30,31,32,41,47,42,48,113,114,169,171,170,185,110,83,77,78,283,79,109,104,52,53,290,85,76,86,100,87,88,89,234,91,154,93,94,96,99,186,187,97,102,112,292,40,119,125,293,121,188,122,123,124,126,127,129,131,239,233,189,135,130,133,136,137,138,107,29,297,103,51,235,190,139,140,141,143,144,146,147,148,39,58,284,161,302,303,162,191,294,163,164,165,167,168,172,173,175,101,192,193,196,197,198,199,201,217,202,203,204,207,218,208,209,115,36,37,38,45,299,106,56,57,211,212,213,214,215,221,222,108,151,236,33,34,35,43,44,298,55,105,54,152,223,153,219,225,226,296,229/ch/1,2,3,4/csv","source_sha256":"f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"note":"douce_long_terme: the summary table prints 'Equation'; the expression is printed on https://ccme.ca/en/chemical/139: The CWQG for nickel is related to water hardness (as CaCO3): / When the water hardness is 0 to ≤ 60 mg/L, the CWQG is 25 µg/L / At hardness > 60 to ≤ 180 mg/L the CWQG is calculated using this equation (see calculator below) / CWQG (µg/L) = e^{0.76[ln(hardness)]+1.06} / At hardness >180 mg/L, the CWQG is 150 µg/L / If the hardness is unknown, the CWQG is 25 µg/L / The online calculator (below) will return the correct value over the entire range of hardness.","table":"eau_vie_aquatique","column":"douce_long_terme"}},{"id":"22b225bf014f58cb","parameter":"Nickel","value":"0.25 mg/L","value_num":0.25,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-02-0","place":["CA"],"conditions":["cites is MDMER","route is direct","a metal mine (or, since June 1, 2018, a diamond mine) whose final discharge points deposit more than 50 m3 of effluent per day (s. 2(1))","a mine to which the Regulations apply for the first time on or after June 1, 2021, or a recognized closed mine that returns to commercial operation on or after that day (s. 4(1)(a)(i))"],"cite":{"instrument":"ca_mdmer","title":"Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations","issuer":"Government of Canada (Fisheries Act; Environment and Climate Change Canada)","edition":"Justice Laws Website, current to 2026-09-21","source_url":"https://laws-lois.justice.gc.ca/eng/regulations/SOR-2002-222/FullText.html","source_sha256":"2c6e0151d3776378f73df4868ca98052882ee81faf9738bbeba6f5d544b648fe","fetched_at":"2026-10-08","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Schedule 4, Table 1 — Column 2: maximum authorized monthly mean concentration","page":null,"quote":"5 Nickel 0.25 mg/L 0.38 mg/L 0.50 mg/L"}},{"id":"4dde5ccfae54a5a4","parameter":"Nickel","value":"0.38 mg/L","value_num":0.38,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-02-0","place":["CA"],"conditions":["cites is MDMER","route is direct","a metal mine (or, since June 1, 2018, a diamond mine) whose final discharge points deposit more than 50 m3 of effluent per day (s. 2(1))","a mine to which the Regulations apply for the first time on or after June 1, 2021, or a recognized closed mine that returns to commercial operation on or after that day (s. 4(1)(a)(i))"],"cite":{"instrument":"ca_mdmer","title":"Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations","issuer":"Government of Canada (Fisheries Act; Environment and Climate Change Canada)","edition":"Justice Laws Website, current to 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returns to commercial operation on or after that day (s. 4(1)(a)(i))"],"cite":{"instrument":"ca_mdmer","title":"Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations","issuer":"Government of Canada (Fisheries Act; Environment and Climate Change Canada)","edition":"Justice Laws Website, current to 2026-09-21","source_url":"https://laws-lois.justice.gc.ca/eng/regulations/SOR-2002-222/FullText.html","source_sha256":"2c6e0151d3776378f73df4868ca98052882ee81faf9738bbeba6f5d544b648fe","fetched_at":"2026-10-08","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Schedule 4, Table 1 — Column 4: maximum authorized concentration in a grab sample","page":null,"quote":"5 Nickel 0.25 mg/L 0.38 mg/L 0.50 mg/L"}},{"id":"be14df3a70d14249","parameter":"Nickel","value":"0.50 mg/L","value_num":0.5,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-02-0","place":["CA"],"conditions":["cites is MDMER","route is direct","a metal mine (or, since June 1, 2018, a diamond mine) whose final discharge points deposit more than 50 m3 of effluent per day (s. 2(1))","any other mine (s. 4(1)(a)(ii))"],"cite":{"instrument":"ca_mdmer","title":"Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations","issuer":"Government of Canada (Fisheries Act; Environment and Climate Change Canada)","edition":"Justice Laws Website, current to 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