{"query":{"parameter":"nickel","place":"CA-NL","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-NL","CA"],"parameter_keys":["cas:7440-02-0","name:iron, nickel (h), zinc","cas:373-02-4","cas:3333-67-3","cas:13463-39-3","name:nickel extractible","cas:12054-48-7","cas:1313-99-1","name:nickel refinery dust","cas:12035-72-2","name:nickel - total","name:nickel, total","name:total nickel"],"names_matched":[["nickel","cas:7440-02-0"],["iron nickel h zinc","name:iron, nickel (h), zinc"],["iron nickel h zinc h","name:iron, nickel (h), zinc"],["nickel acetate","cas:373-02-4"],["nickel carbonate","cas:3333-67-3"],["nickel carbonyl","cas:13463-39-3"],["nickel carbonyl ni co 4 t 4","cas:13463-39-3"],["nickel extractible","name:nickel extractible"],["nickel hydroxide","cas:12054-48-7"],["nickel hydroxide ni oh 2","cas:12054-48-7"],["nickel ii acetate","cas:373-02-4"],["nickel ii oxide","cas:1313-99-1"],["nickel oxide","cas:1313-99-1"],["nickel refinery dust","name:nickel refinery 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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 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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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