{"query":{"parameter":"iron","place":"CA-ON","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-ON","CA"],"parameter_keys":["cas:7439-89-6","name:iron-55","name:iron-59","name:iron - dissolved","name:iron, nickel (h), zinc","cas:13463-40-6"],"names_matched":[["iron","cas:7439-89-6"],["iron 55","name:iron-55"],["iron 59","name:iron-59"],["iron dissolved","name:iron - dissolved"],["iron nickel h zinc","name:iron, nickel (h), zinc"],["iron nickel h zinc h","name:iron, nickel (h), zinc"],["iron pentacarbonyl","cas:13463-40-6"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":6,"offset":0,"returned":6,"next_offset":null,"rows":[{"id":"0dfcef8cfe10d2a4","parameter":"Iron (metallic)","value":"4","value_num":4,"unit":"µg/m³","statistic":"daily_avg","direction":"max","kind":"limit","medium":"ambient_air","level":"regional","parameter_key":"cas:7439-89-6","place":["CA-ON"],"conditions":["averaging period: 24 hour","at a point of impingement: the concentration the discharge results in, or would result in according to an approved dispersion model (s. 20 (1), (2)); s. 20 binds every facility's discharges on or after February 1, 2020 (s. 20 (3)(e))"],"cite":{"instrument":"ca_on_419_05","title":"Ontario Regulation 419/05, Air Pollution — Local Air Quality — Schedule 3, standards with variable averaging periods","issuer":"Government of Ontario (Environmental Protection Act; Ministry of the Environment, Conservation and Parks)","edition":"consolidation period July 1, 2023 - e-Laws currency date; last amendment O. Reg. 90/22 (held snapshot of 2026-09-19, saved through the browser pane; e-Laws checked 2026-10-15: the same consolidation, currency date October 12, 2026)","source_url":"https://www.ontario.ca/laws/regulation/050419","source_sha256":"fb70ac7944efd8d2c48c508a8c045838d941dac28eb72b357b9a501b222ac17e","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Schedule 3, item 52","page":null,"quote":"52. 7439-89-6 Iron (metallic) none 4 none"}},{"id":"7f9c53382e38b7db","parameter":"Iron","value":"300 µg/L","value_num":300,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-89-6","place":["CA-ON"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"ca_on_pwqo","title":"Provincial Water Quality Objectives (Ontario MOEE, Water Management: Policies, Guidelines, Provincial Water Quality Objectives, 1994) — Table 2, PWQOs and Interim PWQOs","issuer":"Ontario Ministry of Environment and Energy (MOEE; now Ministry of the Environment, Conservation and Parks)","edition":"MOEE July 1994 (reprinted February 1999), as published on ontario.ca (fetched 2026-10-09)","source_url":"https://www.ontario.ca/page/water-management-policies-guidelines-provincial-water-quality-objectives","source_sha256":"f4eddd3cd97cf5abb8678d040947bdaa2b4afae406f055948457d372d3b47931","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Appendix A, Table 2 — Table of PWQOs and Interim PWQOs","page":null,"quote":"Iron CAS No. 7439-89-6 300 µg/L ( PWQO )"}},{"id":"adf0b81cb80fcb16","parameter":"Iron-55","value":"300.0","value_num":300,"unit":"Bq/L","direction":"max","kind":"limit","medium":"drinking_water","level":"regional","parameter_key":"name:iron-55","place":["CA-ON"],"conditions":["drinking water a drinking water system provides (Safe Drinking Water Act, 2002; s. 2: a person who immediately contacts the medical officer of health, and takes corrective action under O. Reg. 170/03 Schedules 17-18, is deemed not to contravene)","Radionuclide concentrations that exceed the standard may be tolerated for a short period, as long as the annual average concentrations remain below the standard and the restriction (see immediately below) for multiple radionuclides is met. Restriction for multiple radionuclides: Based on International Commission on Radiological Protection (ICRP) Publication 26, if two or more radionuclides are present, the sum of the quotients of the observed concentration in becquerels per litre divided by the respective standard in becquerels per litre for each of the radionuclides detected must be less than or equal to one."],"cite":{"instrument":"ca_on_169_03","title":"Ontario Regulation 169/03, Ontario Drinking Water Quality Standards — Schedules 1-3","issuer":"Government of Ontario (Safe Drinking Water Act, 2002)","edition":"consolidation period January 1, 2020 - e-Laws currency date (October 12, 2026); last amendment O. Reg. 457/16","source_url":"https://www.ontario.ca/laws/regulation/030169","source_sha256":"b622b94b73c161ff6e2a474712cda6344eadfff705b8a5d312d57ce51df419d0","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Schedule 3, Radiological Standards, Table 2 Artificial Radionuclides, item 26","page":null,"quote":"26. Iron-55 300.0"}},{"id":"20039dc568cbb915","parameter":"Iron-59","value":"40.0","value_num":40,"unit":"Bq/L","direction":"max","kind":"limit","medium":"drinking_water","level":"regional","parameter_key":"name:iron-59","place":["CA-ON"],"conditions":["drinking water a drinking water system provides (Safe Drinking Water Act, 2002; s. 2: a person who immediately contacts the medical officer of health, and takes corrective action under O. Reg. 170/03 Schedules 17-18, is deemed not to contravene)","Radionuclide concentrations that exceed the standard may be tolerated for a short period, as long as the annual average concentrations remain below the standard and the restriction (see immediately below) for multiple radionuclides is met. Restriction for multiple radionuclides: Based on International Commission on Radiological Protection (ICRP) Publication 26, if two or more radionuclides are present, the sum of the quotients of the observed concentration in becquerels per litre divided by the respective standard in becquerels per litre for each of the radionuclides detected must be less than or equal to one."],"cite":{"instrument":"ca_on_169_03","title":"Ontario Regulation 169/03, Ontario Drinking Water Quality Standards — Schedules 1-3","issuer":"Government of Ontario (Safe Drinking Water Act, 2002)","edition":"consolidation period January 1, 2020 - e-Laws currency date (October 12, 2026); last amendment O. Reg. 457/16","source_url":"https://www.ontario.ca/laws/regulation/030169","source_sha256":"b622b94b73c161ff6e2a474712cda6344eadfff705b8a5d312d57ce51df419d0","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Schedule 3, Radiological Standards, Table 2 Artificial Radionuclides, item 27","page":null,"quote":"27. Iron-59 40.0"}},{"id":"62f7203b9d4ea972","parameter":"Iron","value":"300","value_num":300,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:7439-89-6","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,"table":"eau_vie_aquatique","column":"douce_long_terme"}},{"id":"40f50d2757b4bdce","parameter":"Iron","value":"≤ 0.1","value_num":0.1,"unit":"mg/L","direction":"max","kind":"objective","medium":"drinking_water","level":"national","parameter_key":"cas:7439-89-6","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 (Iron, published or reaffirmed 2024)","page":null,"quote":"I Iron (2024) None AO: ≤ 0.1"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"CA-ON"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"iron\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"CA-ON"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}