{"query":{"parameter":"zinc","place":"CA.ns_offshore_area","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA.ns_offshore_area","CA"],"parameter_keys":["cas:7440-66-6","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc","name:arsenic, cadmium (h), copper (h), lead (h), zinc","name:cadmium (h), copper (h), mercury, lead (h), zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","name:iron, nickel (h), zinc","name:total zinc","name:total zinc (freshwater","name:zinc-65","cas:7646-85-7","cas:557-21-1","name:zinc extractible","cas:1314-84-7","name:zinc - total","name:zinc, total"],"names_matched":[["zinc","cas:7440-66-6"],["arsenic cadmium h copper h lead h mercury zinc","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc"],["arsenic cadmium h copper h lead h mercury zinc h","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc"],["arsenic cadmium h copper h lead h zinc","name:arsenic, cadmium (h), copper (h), lead (h), zinc"],["arsenic cadmium h copper h lead h zinc h","name:arsenic, cadmium (h), copper (h), lead (h), zinc"],["cadmium h copper h mercury lead h zinc","name:cadmium (h), copper (h), mercury, lead (h), zinc"],["cadmium h copper h mercury lead h zinc h","name:cadmium (h), copper (h), mercury, lead (h), zinc"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc h","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc"],["iron nickel h zinc","name:iron, nickel (h), zinc"],["iron nickel h zinc h","name:iron, nickel (h), zinc"],["total zinc","name:total zinc"],["total zinc","name:total zinc (freshwater"],["total zinc freshwater","name:total zinc"],["total zinc freshwater","name:total zinc (freshwater"],["total zinc marine","name:total zinc"],["total zinc marine","name:total zinc (freshwater"],["zinc 65","name:zinc-65"],["zinc chloride","cas:7646-85-7"],["zinc cyanide","cas:557-21-1"],["zinc cyanide zn cn 2","cas:557-21-1"],["zinc extractible","name:zinc extractible"],["zinc phosphide","cas:1314-84-7"],["zinc phosphide when present at concentrations 10","cas:1314-84-7"],["zinc phosphide zn3 p2","cas:1314-84-7"],["zinc phosphide zn3p2","cas:1314-84-7"],["zinc total","name:zinc - total"],["zinc total","name:zinc, total"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":13,"offset":0,"returned":13,"next_offset":null,"rows":[{"id":"f96205891c79d266","parameter":"Zinc","value":"250","value_num":250,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["Concentration (mg/kg dry weight) Agricultural"],"cite":{"instrument":"ca_ccme_soil","title":"CCME — Soil Quality 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verified"},"section":null,"page":null,"quote":null,"table":"sols","column":"agricole"}},{"id":"8ca5a0858e9b986a","parameter":"Zinc","value":"250","value_num":250,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["Concentration (mg/kg dry weight) Residential/ parkland"],"cite":{"instrument":"ca_ccme_soil","title":"CCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table, as served 2026-09-24)","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary 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":"residentiel_parc"}},{"id":"66a313825fbe7c9f","parameter":"Zinc","value":"410","value_num":410,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["Concentration (mg/kg dry weight) Commercial"],"cite":{"instrument":"ca_ccme_soil","title":"CCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table, as served 2026-09-24)","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary 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":"commercial"}},{"id":"8c2f33feae6b4d8e","parameter":"Zinc","value":"410","value_num":410,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["Concentration (mg/kg dry weight) Industrial"],"cite":{"instrument":"ca_ccme_soil","title":"CCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table, as served 2026-09-24)","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary 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":"1857ae7fbe802259","parameter":"Zinc","value":"Benchmark = exp(0.833[ln(hardness mg·L^-1)] + 0.240[ln(DOC mg·L^-1)] + 0.526).","unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["receiving_water is freshwater","short-term exposure: CCME's short-term benchmark"],"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_court_terme: the summary table prints 'Equation'; the expression is printed on https://ccme.ca/en/chemical/229: The short-term benchmark is for dissolved zinc and is calculated using the following equation: Benchmark = exp(0.833[ln(hardness mg·L^-1)] + 0.240[ln(DOC mg·L^-1)] + 0.526). / The benchmark equation is valid between hardness 13.8 and 250.5 mg CaCO3·L-1 and DOC 0.3 and 17.3 mg·L-1, which is the range of data used to derive the hardness and DOC slopes. Extrapolations should not be made above the upper hardness limit of 250.5 mg CaCO3·L-1 or above the upper DOC limit of 17.3 mg·L-1. For hardness below 13.8 mg CaCO3·L-1 or DOC below 0.3 mg·L-1, where users want a more stringent benchmark, they should extrapolate with caution and contact their local authority for advice. The short-term benchmark is for dissolved concentrations of zinc. Where guideline users have only water sample concentrations of total zinc, they should first compare these samples to the dissolved benchmark, and where there is an exceedance, re-sample for a dissolved concentration. Guidelines are expressed as two significant figures. | douce_long_terme: the summary table prints 'Equation'; the expression is printed on https://ccme.ca/en/chemical/229: The long-term CWQG is for dissolved zinc and is calculated using the following equation: CWQG = exp(0.947[ln(hardness mg·L^-1)] - 0.815[pH] + 0.398[ln(DOC mg·L^-1)] + 4.625). / The CWQG equation is valid between hardness 23.4 and 399 mg CaCO3·L−1, pH 6.5 and 8.13 and DOC 0.3 to 22.9 mg·L−1, which is the range of data used to derive the hardness, pH and DOC slopes. Extrapolations should not be made above the upper hardness limit of 399 mg CaCO3·L-1, above the upper DOC limit of 22.9 mg·L-1 or below the lower pH limit of 6.5. For hardness below 23.4 mg CaCO3·L-1, DOC below 0.3 mg·L-1 or pH above 8.13, where users want a more stringent WQG, they should extrapolate with caution and contact their local authority for advice. The long-term guideline is for dissolved concentrations of zinc. Where guideline users have only water sample concentrations of total zinc, they should first compare these samples to the dissolved guideline, and where there is an exceedance, re-sample for a dissolved concentration. Guidelines are expressed as two significant figures.","table":"eau_vie_aquatique","column":"douce_court_terme"}},{"id":"a905c52232eb91ae","parameter":"Zinc","value":"CWQG = exp(0.947[ln(hardness mg·L^-1)] - 0.815[pH] + 0.398[ln(DOC mg·L^-1)] + 4.625).","unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:7440-66-6","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_court_terme: the summary table prints 'Equation'; the expression is printed on https://ccme.ca/en/chemical/229: The short-term benchmark is for dissolved zinc and is calculated using the following equation: Benchmark = exp(0.833[ln(hardness mg·L^-1)] + 0.240[ln(DOC mg·L^-1)] + 0.526). / The benchmark equation is valid between hardness 13.8 and 250.5 mg CaCO3·L-1 and DOC 0.3 and 17.3 mg·L-1, which is the range of data used to derive the hardness and DOC slopes. Extrapolations should not be made above the upper hardness limit of 250.5 mg CaCO3·L-1 or above the upper DOC limit of 17.3 mg·L-1. For hardness below 13.8 mg CaCO3·L-1 or DOC below 0.3 mg·L-1, where users want a more stringent benchmark, they should extrapolate with caution and contact their local authority for advice. The short-term benchmark is for dissolved concentrations of zinc. Where guideline users have only water sample concentrations of total zinc, they should first compare these samples to the dissolved benchmark, and where there is an exceedance, re-sample for a dissolved concentration. Guidelines are expressed as two significant figures. | douce_long_terme: the summary table prints 'Equation'; the expression is printed on https://ccme.ca/en/chemical/229: The long-term CWQG is for dissolved zinc and is calculated using the following equation: CWQG = exp(0.947[ln(hardness mg·L^-1)] - 0.815[pH] + 0.398[ln(DOC mg·L^-1)] + 4.625). / The CWQG equation is valid between hardness 23.4 and 399 mg CaCO3·L−1, pH 6.5 and 8.13 and DOC 0.3 to 22.9 mg·L−1, which is the range of data used to derive the hardness, pH and DOC slopes. Extrapolations should not be made above the upper hardness limit of 399 mg CaCO3·L-1, above the upper DOC limit of 22.9 mg·L-1 or below the lower pH limit of 6.5. For hardness below 23.4 mg CaCO3·L-1, DOC below 0.3 mg·L-1 or pH above 8.13, where users want a more stringent WQG, they should extrapolate with caution and contact their local authority for advice. The long-term guideline is for dissolved concentrations of zinc. Where guideline users have only water sample concentrations of total zinc, they should first compare these samples to the dissolved guideline, and where there is an exceedance, re-sample for a dissolved concentration. Guidelines are expressed as two significant figures.","table":"eau_vie_aquatique","column":"douce_long_terme"}},{"id":"bf9d074471595164","parameter":"Zinc","value":"≤ 5.0","value_num":5,"unit":"mg/L","direction":"max","kind":"objective","medium":"drinking_water","level":"national","parameter_key":"cas:7440-66-6","place":["CA"],"conditions":["drinking water (a guideline, not a regulation: each province and territory decides whether, and how, it binds there)"],"cite":{"instrument":"ca_hc_gcdwq","title":"Health Canada — Guidelines for Canadian Drinking Water Quality, Summary Tables 1-3 (microbiological, chemical and physical, radiological)","issuer":"Health Canada, with the Federal-Provincial-Territorial Committee on Drinking Water","edition":"page modified 2026-01-21 (dcterms.modified; issued 2014-10-22): Tables 1-3 as the browser pane rendered them on 2026-10-15","source_url":"https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/water-quality/guidelines-canadian-drinking-water-quality-summary-table.html","source_sha256":"9451ad8bfa566c0625ae4fcb362272cbb0e20040c548540f362488118c300b89","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Table 2, Chemical and Physical Parameters (Zinc, published or reaffirmed 1979, 2005)","page":null,"quote":"I Zinc (1979, 2005) None AO: ≤ 5.0"}},{"id":"b0eab863aeffa0ec","parameter":"Zinc","value":"0.40 mg/L","value_num":0.4,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-66-6","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; 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