{"query":{"parameter":"nickel","place":"US-IN","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-IN","US"],"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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Waters of the State Within the Great Lakes System')","hardness-dependent: the row's equation of the receiving water's hardness (the hardness used is at most 400 mg/l CaCO3, note [2])"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(3) Table 6-1","page":8,"quote":null}},{"id":"93c67bdcc7530022","parameter":"Nickel (dissolved)","value":"WER (e(0.846[lnH]+0.0584))(CF)","unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness-dependent: the row's equation of the receiving water's hardness (the hardness used is at most 400 mg/l CaCO3, note [2])"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of 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hardness (the hardness used is at most 400 mg/l CaCO3, note [3])"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1.5-8(b)(3) Table 8-1","page":73,"quote":null}},{"id":"7cab1b863f9a6a67","parameter":"Nickel (dissolved)","value":"WER (e(0.846 [lnH] + 0.0584))(CF)","unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state within the Great Lakes system (327 IAC 2-1.5-1)","hardness-dependent: the row's equation of the receiving water's hardness (the hardness used is at most 400 mg/l CaCO3, note [3])"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1.5-8(b)(3) Table 8-1","page":73,"quote":null}},{"id":"aefb21a0bb3da7b3","parameter":"Nickel (dissolved)","value":"260","value_num":260,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 50 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"50 30 1.2 260 29 0.49 – 65 66"}},{"id":"f3986fe3c49c9b61","parameter":"Nickel (dissolved)","value":"29","value_num":29,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 50 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"50 30 1.2 260 29 0.49 – 65 66"}},{"id":"04edd2d0ef62374f","parameter":"Nickel (dissolved)","value":"470","value_num":470,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 100 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"100 65 2.5 470 52 1.6 – 120 120"}},{"id":"ff6d6d5c7645d651","parameter":"Nickel (dissolved)","value":"52","value_num":52,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 100 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"100 65 2.5 470 52 1.6 – 120 120"}},{"id":"4d374694c02d2a34","parameter":"Nickel (dissolved)","value":"660","value_num":660,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 150 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"150 100 3.9 660 73 3.2 – 170 170"}},{"id":"0845db7ece7c8751","parameter":"Nickel (dissolved)","value":"73","value_num":73,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 150 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"150 100 3.9 660 73 3.2 – 170 170"}},{"id":"72e35232781e8385","parameter":"Nickel (dissolved)","value":"840","value_num":840,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 200 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) disapproved)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/inwqs.pdf","source_sha256":"a1d0dba2ac83057cf619f9e0cb6f1fe5c8f9c908928310f266936510d4211a1c","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"327 IAC 2-1-6(a)(5) Table 6-2","page":12,"quote":"200 140 5.3 840 93 5.3 – 210 210"}},{"id":"2cd005499bc7e88f","parameter":"Nickel (dissolved)","value":"93","value_num":93,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 200 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 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(dissolved)","value":"110","value_num":110,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 250 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 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(dissolved)","value":"130","value_num":130,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-02-0","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 300 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 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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","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 268.48, Table UTS, Inorganic Constituents, wastewater standard","page":null,"quote":"Nickel 7440-02-0 3.98 11 mg/l TCLP"}},{"id":"f0ba512ccced7861","parameter":"Nickel","value":"11 mg/l TCLP","value_num":11,"unit":"mg/L TCLP","statistic":"instant","direction":"max","kind":"limit","medium":"leachate","level":"national","parameter_key":"cas:7440-02-0","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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