{"query":{"parameter":"chromium total","place":"US-WI","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-WI","US"],"parameter_keys":["cas:7440-47-3","name:chromium total","name:chromium, total","name:chromium +3, total","name:chromium (+3)","name:chromium +6, total","name:chromium (+6)","cas:18540-29-9","cas:16065-83-1","name:total chromium","name:cromo totale","name:chrome total","name:chromium-51","name:chromium +6","name:chromium ii iii","name:chromium (vi) (freshwater) chromium (vi) marine","cas:92203-02-6"],"names_matched":[["chromium total","cas:7440-47-3"],["chromium total","name:chromium total"],["chromium total","name:chromium, total"],["chromium 3 total","name:chromium +3, total"],["chromium 3 total recoverable","name:chromium (+3)"],["chromium 6 total","name:chromium +6, total"],["chromium 6 total recoverable","name:chromium (+6)"],["chromium hexavalent total","cas:18540-29-9"],["chromium iii total","cas:16065-83-1"],["chromium iii total recoverable","cas:16065-83-1"],["chromium total hexavalent cr vi","cas:18540-29-9"],["chromium total trivalent cr iii","cas:16065-83-1"],["chromium vi total","cas:18540-29-9"],["chromium vi total recoverable","cas:18540-29-9"],["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"],["chromium 3","cas:16065-83-1","chromium"],["chromium 3","name:chromium (+3)","chromium"],["chromium 51","name:chromium-51","chromium"],["chromium 6","cas:18540-29-9","chromium"],["chromium 6","name:chromium (+6)","chromium"],["chromium 6","name:chromium +6","chromium"],["chromium and chromium compounds metallic divalent and trivalent","name:chromium ii iii","chromium"],["chromium compounds hexavalent","cas:18540-29-9","chromium"],["chromium hex","cas:18540-29-9","chromium"],["chromium hex dissolved","cas:18540-29-9","chromium"],["chromium hexavalent","cas:18540-29-9","chromium"],["chromium hexavalent cr vi","cas:18540-29-9","chromium"],["chromium hexavalent dissolved","cas:18540-29-9","chromium"],["chromium ii iii","name:chromium ii iii","chromium"],["chromium iii","cas:16065-83-1","chromium"],["chromium iii dissolved","cas:16065-83-1","chromium"],["chromium iii insoluble salts","cas:16065-83-1","chromium"],["chromium iii soluble compounds","cas:16065-83-1","chromium"],["chromium tri","cas:16065-83-1","chromium"],["chromium trivalent","cas:16065-83-1","chromium"],["chromium trivalent cr iii","cas:16065-83-1","chromium"],["chromium trivalent dissolved","cas:16065-83-1","chromium"],["chromium vi","cas:18540-29-9","chromium"],["chromium vi and compounds 1 12","cas:18540-29-9","chromium"],["chromium vi and compounds 1 13","cas:18540-29-9","chromium"],["chromium vi dissolved","cas:18540-29-9","chromium"],["chromium vi freshwater chromium vi marine","name:chromium (vi) (freshwater) chromium (vi) marine","chromium"],["hexavalent chromium","cas:18540-29-9","chromium"],["phosphoric acid reaction products with aluminum hydroxide and chromium oxide cro3","cas:92203-02-6","chromium"],["total chromium","name:total chromium","chromium"]],"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":2732,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"255547af45ce1d9d","parameter":"Chromium (+3)","value":"41,750","value_num":41750,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","warm water sport fish community (NR 102.04(3)(b))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"9. Chromium (+3) 41,750 41,750 3,818,000 3,818,000 8,400,000"}},{"id":"f72357ee1e30d049","parameter":"Chromium (+3)","value":"41,750","value_num":41750,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","cold water community (NR 102.04(3)(a))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"9. Chromium (+3) 41,750 41,750 3,818,000 3,818,000 8,400,000"}},{"id":"c064bdd75b8051d8","parameter":"Chromium (+3)","value":"3,818,000","value_num":3818000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","warm water forage fish community (NR 102.04(3)(c)) or limited forage fish community (NR 102.04(3)(d)) or warm water sport fish community (NR 102.04(3)(b))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"9. Chromium (+3) 41,750 41,750 3,818,000 3,818,000 8,400,000"}},{"id":"e286a64cb66b0c76","parameter":"Chromium (+3)","value":"3,818,000","value_num":3818000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","cold water community (NR 102.04(3)(a))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"9. Chromium (+3) 41,750 41,750 3,818,000 3,818,000 8,400,000"}},{"id":"cb29eaf1e42db21f","parameter":"Chromium (+3)","value":"8,400,000","value_num":8400000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","limited aquatic life (NR 102.04(3)(e))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"9. Chromium (+3) 41,750 41,750 3,818,000 3,818,000 8,400,000"}},{"id":"c6ea2febc764596e","parameter":"Chromium (+6)","value":"83.5","value_num":83.5,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","warm water sport fish community (NR 102.04(3)(b))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"10. Chromium (+6) 83.5 83.5 7,636 7,636 16,800"}},{"id":"e4748c6c18aab4a0","parameter":"Chromium (+6)","value":"83.5","value_num":83.5,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","cold water community (NR 102.04(3)(a))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"10. Chromium (+6) 83.5 83.5 7,636 7,636 16,800"}},{"id":"eda006945045a4a1","parameter":"Chromium (+6)","value":"7,636","value_num":7636,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","warm water forage fish community (NR 102.04(3)(c)) or limited forage fish community (NR 102.04(3)(d)) or warm water sport fish community (NR 102.04(3)(b))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"10. Chromium (+6) 83.5 83.5 7,636 7,636 16,800"}},{"id":"976a6219efb2137f","parameter":"Chromium (+6)","value":"7,636","value_num":7636,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","cold water community (NR 102.04(3)(a))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"10. Chromium (+6) 83.5 83.5 7,636 7,636 16,800"}},{"id":"8858d15c027625f6","parameter":"Chromium (+6)","value":"16,800","value_num":16800,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-47-3","place":["US-WI"],"conditions":["receiving_water is freshwater","waters not classified as public water supplies","limited aquatic life (NR 102.04(3)(e))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"10. Chromium (+6) 83.5 83.5 7,636 7,636 16,800"}},{"id":"3c7641c8ac5adab6","parameter":"Chromium, total","value":"100","value_num":100,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium, total","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","warm water sport fish community (NR 102.04(3)(b))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"8. Chromium, total2 100 100"}},{"id":"984ec7419fee32b4","parameter":"Chromium, total","value":"100","value_num":100,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium, total","place":["US-WI"],"conditions":["receiving_water is freshwater","waters classified as public water supplies (ch. NR 104)","cold water community (NR 102.04(3)(a))"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.08 Table 8","page":15,"quote":"8. Chromium, total2 100 100"}},{"id":"c4053cd2b767fe40","parameter":"Chromium (+3) (total recoverable)","value":"V 0.819, ln ACI 3.7256","unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium (+3)","place":["US-WI"],"conditions":["receiving_water is freshwater","hardness-dependent: the table's equation with the row's V and ln ACI; printed, not evaluated"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.05 Table 2","page":9,"quote":"All Surface Waters 0.819 3.7256 1022 1803 3181"}},{"id":"2557e2b39c9cec6c","parameter":"Chromium (+3) (total recoverable)","value":"1022","value_num":1022,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium (+3)","place":["US-WI"],"conditions":["receiving_water is freshwater","hardness 50 ppm as CaCO3 (Table 2's example)"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.05 Table 2","page":9,"quote":"All Surface Waters 0.819 3.7256 1022 1803 3181"}},{"id":"e30d042db59cc566","parameter":"Chromium (+3) (total recoverable)","value":"1803","value_num":1803,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium (+3)","place":["US-WI"],"conditions":["receiving_water is freshwater","hardness 100 ppm as CaCO3 (Table 2's example)"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.05 Table 2","page":9,"quote":"All Surface Waters 0.819 3.7256 1022 1803 3181"}},{"id":"4550ab9f7d0567f5","parameter":"Chromium (+3) (total recoverable)","value":"3181","value_num":3181,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium (+3)","place":["US-WI"],"conditions":["receiving_water is freshwater","hardness 200 ppm as CaCO3 (Table 2's example)"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. NR 102 dissolved oxygen, pH, PFOS/PFOA and total phosphorus criteria","issuer":"State of Wisconsin, Department of Natural Resources","edition":"NR 105 as last amended Register July 2010 No. 655 (eff. 8-1-10) and NR 102 effective April 26, 2024 (Register January 2024 No. 817), as US EPA posts them in effect for CWA purposes; EPA disapproved NR 105's copper and nickel acute and chronic criteria (Tables 2 and 6) and the endrin chronic criterion (Table 5), replaced by 40 CFR 132 Tables 1 and 2","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/wiwqs-nr105.pdf","source_sha256":"c41f1ef79ba951936c9998711fca196f6e6b27dff311ba17b27d938b39cb0063","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"NR 105.06 Table 6","page":12,"quote":"Cold Water 0.819 0.6851 48.86 86.21 152.1"}},{"id":"d822e8943515ac65","parameter":"Chromium (+3) (total recoverable)","value":"152.1","value_num":152.1,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:chromium (+3)","place":["US-WI"],"conditions":["receiving_water is freshwater","cold water community (NR 102.04(3)(a))","hardness 200 ppm as CaCO3 (Table 6's example)"],"cite":{"instrument":"us_wi_wqs","title":"Wisconsin Administrative Code ch. NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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NR 105 surface water quality criteria for toxic substances (acute and chronic aquatic life, wildlife, human threshold and human cancer) and ch. 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Where the waste contains less than 0.5 percent filterable solids, the waste itself, after filtering using the methodology outlined in Method 1311, is considered to be the extract for the purpose of this section."],"cite":{"instrument":"us_40cfr261_24","title":"40 CFR 261.24 — Toxicity characteristic: Table 1, maximum concentration of contaminants for the toxicity characteristic (TCLP regulatory levels)","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 261.24 as of 2026-10-13 (title 40 up to date as of that day)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=261&section=261.24","source_sha256":"3a1ec9b0d3051c70e471e359275657b0fa6d98e80927d2217e82b2dbbca60961","fetched_at":"2026-10-15","section":"40 CFR 261.24, Table 1","page":null,"quote":"D007 Chromium 7440-47-3 5.0"}},{"id":"96c2b6d624ded0c8","parameter":"Chromium (Total)","value":"2.77","value_num":2.77,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","section":"40 CFR 268.48, Table UTS, Inorganic Constituents, wastewater standard","page":null,"quote":"Chromium (Total) 7440-47-3 2.77 0.60 mg/l TCLP"}},{"id":"28487d54f43db568","parameter":"Chromium (Total)","value":"0.60 mg/l TCLP","value_num":0.6,"unit":"mg/L TCLP","statistic":"instant","direction":"max","kind":"limit","medium":"leachate","level":"national","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. 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Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","section":"40 CFR 268.48, Table UTS, Inorganic Constituents, nonwastewater standard","page":null,"quote":"Chromium (Total) 7440-47-3 2.77 0.60 mg/l 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