{"query":{"parameter":"dissolved oxygen","place":"US-WI","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-WI","US"],"parameter_keys":["cas:7782-44-7","name:dissolved oxygen","name:diel dissolved oxygen flux","name:minimum dissolved oxygen","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","name:oxygen - dissolved","name:oxygen, dissolved"],"names_matched":[["dissolved oxygen","cas:7782-44-7"],["dissolved oxygen","name:dissolved oxygen"],["diel dissolved oxygen flux","name:diel dissolved oxygen flux"],["minimum dissolved oxygen","name:minimum dissolved oxygen"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc h","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["oxygen dissolved","name:oxygen - dissolved","oxygen dissolved"],["oxygen dissolved","name:oxygen, dissolved","oxygen dissolved"],["oxygen dissolved intergravel","name:oxygen, dissolved","oxygen dissolved"]],"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":"1ed07b6de8be51a6","parameter":"Dissolved oxygen","value":"5 mg/L","value_num":5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","fish and aquatic life waters not covered by NR 102.04(4)(a)3. to 7. or (am)"],"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":"not verified"},"section":"NR 102.04(4)(a)","page":3,"quote":"5 mg/L at all times."}},{"id":"fa7a7ac94ff519a4","parameter":"Dissolved oxygen","value":"6.0 mg/L","value_num":6,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","trout class I or II waters, cold water communities other than two-story fishery lakes, and Great Lakes tributaries used by salmonids for spawning during the period of habitation (NR 102.04(4)(a)3.)"],"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":"not verified"},"section":"NR 102.04(4)(a)","page":4,"quote":"a. A minimum dissolved oxygen concentration of 6.0 mg/L"}},{"id":"5792c557d8b2c87f","parameter":"Dissolved oxygen","value":"7.0 mg/L","value_num":7,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","trout class I or II waters, cold water communities and salmonid spawning tributaries, while cold water fish spawn through fry emergence (NR 102.04(4)(a)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":"not verified"},"section":"NR 102.04(4)(a)","page":4,"quote":"b. A minimum dissolved oxygen concentration of 7.0 mg/L"}},{"id":"595dd3b82fb78ec6","parameter":"Dissolved oxygen","value":"6.0 mg/L","value_num":6,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","trout class III waters"],"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":"not verified"},"section":"NR 102.04(4)(a)","page":4,"quote":"minimum dissolved oxygen concentration of 6.0 mg/L"}},{"id":"88122ca455d7de68","parameter":"Dissolved oxygen","value":"3 mg/L","value_num":3,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","limited forage fish waters"],"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":"not verified"},"section":"NR 102.04(4)(a)","page":4,"quote":"minimum dissolved oxygen concentration of 3 mg/L at all"}},{"id":"942a910b167aa027","parameter":"Dissolved oxygen","value":"1 mg/L","value_num":1,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-WI"],"conditions":["receiving_water is freshwater","limited aquatic life waters, wetlands, diffuse surface waters and wastewater effluent channels"],"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":"not verified"},"section":"NR 102.04(4)(a)","page":4,"quote":"oxygen concentration of 1 mg/L at all times when water is present."}}],"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":"US-WI"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"dissolved oxygen\", 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":"US-WI"},"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"}]}