{"query":{"parameter":"dissolved oxygen","place":"US-MS","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MS","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":4,"offset":0,"returned":4,"next_offset":null,"rows":[{"id":"60ca9fdb6baf3e7e","parameter":"Dissolved oxygen","value":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l.","value_num":5,"unit":"mg/L","statistic":"daily_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-MS"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_ms_wqs","title":"Mississippi 11 Miss. Admin. Code Pt. 6, Ch. 2 Surface Water Quality Criteria for Intrastate, Interstate and Coastal Waters: Table 2 numeric criteria (freshwater and saltwater acute/chronic, human health), dissolved oxygen, pH, class mineral criteria and waterbody-specific criteria","issuer":"State of Mississippi, Commission on Environmental Quality (Department of Environmental Quality)","edition":"effective December 17, 2021, as US EPA posts it in effect for CWA purposes (cover March 18, 2022; EPA requested more information only on definition 27 and the Ephemeral Stream reference)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/ms-wqs.pdf","source_sha256":"272701c5d5a2f8b10cf9c40fc50f5eb52f07753965d4aad7d23d360d4da34264","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"11 Miss. Admin. Code Pt. 6, Ch. 2, Rule 2.2.C","page":10,"quote":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l."}},{"id":"8cf9416657228a6d","parameter":"Dissolved oxygen","value":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l.","value_num":4,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-MS"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_ms_wqs","title":"Mississippi 11 Miss. Admin. Code Pt. 6, Ch. 2 Surface Water Quality Criteria for Intrastate, Interstate and Coastal Waters: Table 2 numeric criteria (freshwater and saltwater acute/chronic, human health), dissolved oxygen, pH, class mineral criteria and waterbody-specific criteria","issuer":"State of Mississippi, Commission on Environmental Quality (Department of Environmental Quality)","edition":"effective December 17, 2021, as US EPA posts it in effect for CWA purposes (cover March 18, 2022; EPA requested more information only on definition 27 and the Ephemeral Stream reference)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/ms-wqs.pdf","source_sha256":"272701c5d5a2f8b10cf9c40fc50f5eb52f07753965d4aad7d23d360d4da34264","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"11 Miss. Admin. Code Pt. 6, Ch. 2, Rule 2.2.C","page":10,"quote":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l."}},{"id":"e4e3313d2d46873d","parameter":"Dissolved oxygen","value":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l.","value_num":5,"unit":"mg/L","statistic":"daily_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-MS"],"conditions":["receiving_water is marine"],"cite":{"instrument":"us_ms_wqs","title":"Mississippi 11 Miss. Admin. Code Pt. 6, Ch. 2 Surface Water Quality Criteria for Intrastate, Interstate and Coastal Waters: Table 2 numeric criteria (freshwater and saltwater acute/chronic, human health), dissolved oxygen, pH, class mineral criteria and waterbody-specific criteria","issuer":"State of Mississippi, Commission on Environmental Quality (Department of Environmental Quality)","edition":"effective December 17, 2021, as US EPA posts it in effect for CWA purposes (cover March 18, 2022; EPA requested more information only on definition 27 and the Ephemeral Stream reference)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/ms-wqs.pdf","source_sha256":"272701c5d5a2f8b10cf9c40fc50f5eb52f07753965d4aad7d23d360d4da34264","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"11 Miss. Admin. Code Pt. 6, Ch. 2, Rule 2.2.C","page":10,"quote":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l."}},{"id":"ba32b98a0f41de69","parameter":"Dissolved oxygen","value":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l.","value_num":4,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-MS"],"conditions":["receiving_water is marine"],"cite":{"instrument":"us_ms_wqs","title":"Mississippi 11 Miss. Admin. Code Pt. 6, Ch. 2 Surface Water Quality Criteria for Intrastate, Interstate and Coastal Waters: Table 2 numeric criteria (freshwater and saltwater acute/chronic, human health), dissolved oxygen, pH, class mineral criteria and waterbody-specific criteria","issuer":"State of Mississippi, Commission on Environmental Quality (Department of Environmental Quality)","edition":"effective December 17, 2021, as US EPA posts it in effect for CWA purposes (cover March 18, 2022; EPA requested more information only on definition 27 and the Ephemeral Stream reference)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/ms-wqs.pdf","source_sha256":"272701c5d5a2f8b10cf9c40fc50f5eb52f07753965d4aad7d23d360d4da34264","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"11 Miss. Admin. Code Pt. 6, Ch. 2, Rule 2.2.C","page":10,"quote":"C. Dissolved Oxygen: Dissolved oxygen concentrations shall be maintained at a daily average of not less than 5.0 mg/l with an instantaneous minimum of not less than 4.0 mg/l."}}],"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-MS"},"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-MS"},"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"}]}