{"query":{"parameter":"chromium","place":"CA-ON","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-ON","CA"],"parameter_keys":["cas:7440-47-3","cas:16065-83-1","name:chromium (+3)","name:chromium +3, total","name:chromium-51","cas:18540-29-9","name:chromium (+6)","name:chromium +6","name:chromium +6, total","name:chromium ii iii","name:chromium total","name:chromium, total","name:chromium (vi) (freshwater) chromium (vi) marine","cas:92203-02-6","name:total chromium","name:cromo totale","name:chrome total"],"names_matched":[["chromium","cas:7440-47-3"],["chromium 3","cas:16065-83-1"],["chromium 3","name:chromium (+3)"],["chromium 3 total","name:chromium +3, total"],["chromium 3 total recoverable","name:chromium (+3)"],["chromium 51","name:chromium-51"],["chromium 6","cas:18540-29-9"],["chromium 6","name:chromium (+6)"],["chromium 6","name:chromium +6"],["chromium 6 total","name:chromium +6, total"],["chromium 6 total recoverable","name:chromium (+6)"],["chromium and chromium compounds metallic divalent and trivalent","name:chromium ii iii"],["chromium compounds hexavalent","cas:18540-29-9"],["chromium hex","cas:18540-29-9"],["chromium hex dissolved","cas:18540-29-9"],["chromium hexavalent","cas:18540-29-9"],["chromium hexavalent cr vi","cas:18540-29-9"],["chromium hexavalent dissolved","cas:18540-29-9"],["chromium hexavalent total","cas:18540-29-9"],["chromium ii iii","name:chromium ii iii"],["chromium iii","cas:16065-83-1"],["chromium iii dissolved","cas:16065-83-1"],["chromium iii insoluble salts","cas:16065-83-1"],["chromium iii soluble compounds","cas:16065-83-1"],["chromium iii total","cas:16065-83-1"],["chromium iii total recoverable","cas:16065-83-1"],["chromium total","name:chromium total"],["chromium total","name:chromium, total"],["chromium total hexavalent cr vi","cas:18540-29-9"],["chromium total trivalent cr iii","cas:16065-83-1"],["chromium tri","cas:16065-83-1"],["chromium trivalent","cas:16065-83-1"],["chromium trivalent cr iii","cas:16065-83-1"],["chromium trivalent dissolved","cas:16065-83-1"],["chromium vi","cas:18540-29-9"],["chromium vi and compounds 1 12","cas:18540-29-9"],["chromium vi and compounds 1 13","cas:18540-29-9"],["chromium vi dissolved","cas:18540-29-9"],["chromium vi freshwater chromium vi marine","name:chromium (vi) (freshwater) chromium (vi) marine"],["chromium vi total","cas:18540-29-9"],["chromium vi total recoverable","cas:18540-29-9"],["hexavalent chromium","cas:18540-29-9"],["phosphoric acid reaction products with aluminum hydroxide and chromium oxide cro3","cas:92203-02-6"],["total chromium","name:total chromium"],["total chromium total recoverable","name:total chromium"],["chrom vi","cas:18540-29-9","chrom"],["cromo esavalente","cas:18540-29-9","cromo"],["cromo hexavalente","cas:18540-29-9","cromo"],["cromo total","name:total chromium","cromo"],["cromo totale","name:cromo totale","cromo"],["cromo trivalente","cas:16065-83-1","cromo"],["cromo vi","cas:18540-29-9","cromo"],["chrome composes de chrome hexavalent","cas:18540-29-9","chrome"],["chrome composes de chrome trivalent","cas:16065-83-1","chrome"],["chrome hexavalent et composes en cr 6","cas:18540-29-9","chrome"],["chrome iii cr iii","cas:16065-83-1","chrome"],["chrome total","name:chrome total","chrome"],["chrome total cr","name:chrome total","chrome"],["chrome vi cr vi","cas:18540-29-9","chrome"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water"},"total":131,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"a54c8f52340960fa","parameter":"Chromium","value":"0.05","value_num":0.05,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"regional","parameter_key":"cas:7440-47-3","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)"],"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","section":"Schedule 2, Chemical Standards, item 18","page":null,"quote":"18. Chromium 0.05"}},{"id":"a0c7e4a1bf5cafb9","parameter":"Chromium (trivalent)","value":"8.9 µg/L","value_num":8.9,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16065-83-1","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":"8.9 µg/L ( PWQO ) 18 for trivalent chromium ( Cr III )"}},{"id":"47c4aba43ca1ea89","parameter":"Chromium-51","value":"3000.0","value_num":3000,"unit":"Bq/L","direction":"max","kind":"limit","medium":"drinking_water","level":"regional","parameter_key":"name:chromium-51","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","section":"Schedule 3, Radiological Standards, Table 2 Artificial Radionuclides, item 16","page":null,"quote":"16. Chromium-51 3000.0"}},{"id":"508af55d411c3a84","parameter":"Chromium VI","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 1: Full Depth Background Site Condition Standards","Ground Water (µg ⁄ L) - All Types of Property Uses"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_1_gw","column":"gw"}},{"id":"17d23c84d7cef907","parameter":"Chromium VI","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 2: Full Depth Generic Site Condition Standards in a Potable Ground Water Condition","Potable Ground Water µg ⁄ L - All Types of Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_2_gw","column":"gw_coarse"}},{"id":"d702d518036ba434","parameter":"Chromium VI","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 2: Full Depth Generic Site Condition Standards in a Potable Ground Water Condition","Potable Ground Water µg ⁄ L - 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All Types of Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_3_gw","column":"gw_coarse"}},{"id":"16a2a76d70f764ed","parameter":"Chromium VI","value":"140","value_num":140,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 3: Full Depth Generic Site Condition Standards in a Non-Potable Ground Water Condition","Non-potable ground water µg ⁄ L - All Types of Property Use","the value for medium and fine textured soils is given within brackets"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_3_gw","column":"gw_fine"}},{"id":"f5cad4aadc744215","parameter":"Chromium VI","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 4: Stratified Site Condition Standards in a Potable Ground Water Condition","Potable Ground Water µg ⁄ L - All Types of Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_4_gw","column":"gw_coarse"}},{"id":"e7bfd515377dd721","parameter":"Chromium VI","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 4: Stratified Site Condition Standards in a Potable Ground Water Condition","Potable Ground Water µg ⁄ L - 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All Types of Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_5_gw","column":"gw_coarse"}},{"id":"355588b9925e348c","parameter":"Chromium VI","value":"140","value_num":140,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 5: Stratified Site Condition Standards in a Non-Potable Ground Water Condition","Non-Potable Ground Water µg ⁄ L - 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All Types of Property Use","the value for medium and fine textured soils is given within brackets"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_6_gw","column":"gw_fine"}},{"id":"c4c4eb6a28e57825","parameter":"Chromium VI","value":"110","value_num":110,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 7: Generic Site Condition Standards for Shallow Soils in a Non-Potable Ground Water Condition","Non-Potable Ground Water µg ⁄ L - All Types of Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_7_gw","column":"gw_coarse"}},{"id":"d7b9e7e1598650de","parameter":"Chromium VI","value":"110","value_num":110,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 7: Generic Site Condition Standards for Shallow Soils in a Non-Potable Ground Water Condition","Non-Potable Ground Water µg ⁄ L - 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All Types of Property Use"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_8_gw","column":"gw"}},{"id":"70898b4890bbb41b","parameter":"Chromium VI","value":"110","value_num":110,"unit":"µg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 9: Generic Site Condition Standards for Use within 30 m of a Water Body in a Non-Potable Ground Water Condition","Ground Water(µg ⁄ L) - All Types of Property Use"],"cite":{"instrument":"ca_on_153_gw","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_9_gw","column":"gw"}},{"id":"0f701ba932f335d7","parameter":"Chromium VI","value":"0.66","value_num":0.66,"unit":"µg/g","direction":"max","kind":"limit","medium":"soil","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 1: Full Depth Background Site Condition Standards","Soil (other than sediment) µg ⁄ g - Agricultural or Other Property Use"],"cite":{"instrument":"ca_on_153_soil","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — soil","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_1_soil","column":"agri"}},{"id":"bf437ff63c2c4889","parameter":"Chromium VI","value":"0.66","value_num":0.66,"unit":"µg/g","direction":"max","kind":"limit","medium":"soil","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 1: Full Depth Background Site Condition Standards","Soil (other than sediment) µg ⁄ g - Residential/ Parkland/Institutional/ Industrial/Commercial/ Community Property Use"],"cite":{"instrument":"ca_on_153_soil","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — soil","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_1_soil","column":"res_park_inst_ind_comm_comm"}},{"id":"abbfc53b96e23122","parameter":"Chromium VI","value":"8","value_num":8,"unit":"µg/g","direction":"max","kind":"limit","medium":"soil","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 2: Full Depth Generic Site Condition Standards in a Potable Ground Water Condition","Soil Standards (other than sediment) µg ⁄ g - 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Industrial/Commercial/ Community Property Use","The value for coarse soils is the one that is not bracketed"],"cite":{"instrument":"ca_on_153_soil","title":"Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — soil","issuer":"Ontario Ministry of the Environment","edition":"April 15, 2011","source_url":"https://www.ontario.ca/page/soil-ground-water-and-sediment-standards-use-under-part-xv1-environmental-protection-act","source_sha256":"4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"table_3_soil","column":"ind_comm_comm_coarse"}},{"id":"1901c0ccd711a312","parameter":"Chromium VI","value":"10","value_num":10,"unit":"µg/g","direction":"max","kind":"limit","medium":"soil","level":"regional","parameter_key":"cas:18540-29-9","place":["CA-ON"],"conditions":["Table 3: Full Depth Generic Site Condition Standards in a Non-Potable Ground Water Condition","Soil Standards (other than sediment) µg ⁄ g - 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