{"query":{"parameter":"dissolved oxygen","place":"US-KY","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-KY","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":"1d95395ced230dfe","parameter":"Dissolved oxygen","value":"1.a. Dissolved oxygen shall be maintained at a minimum concentration of five and zero- tenths (5.0) mg/L as a twenty-four (24) hour average in water with WAH use.","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-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat (401 KAR 10:031 Section 4(1))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"401 KAR 10:031 Section 4(1)(e)","page":4,"quote":"1.a. Dissolved oxygen shall be maintained at a minimum concentration of five and zero- tenths (5.0) mg/L as a twenty-four (24) hour average in water with WAH use."}},{"id":"792e26c0e2b5c086","parameter":"Dissolved oxygen","value":"b. The instantaneous minimum shall not be less than four and zero-tenths (4.0) mg/L in wa- ter with WAH use.","value_num":4,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat (401 KAR 10:031 Section 4(1))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"401 KAR 10:031 Section 4(1)(e)","page":4,"quote":"b. The instantaneous minimum shall not be less than four and zero-tenths (4.0) mg/L in wa- ter with WAH use."}},{"id":"f6c12102d4539a69","parameter":"Dissolved oxygen","value":"1. A minimum concentration of six and zero-tenths (6.0) mg/L as a twenty-four (24) hour av- erage and five and zero-tenths (5.0) mg/L as an instantaneous minimum shall be maintained.","value_num":6,"unit":"mg/L","statistic":"daily_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated cold water aquatic habitat (401 KAR 10:031 Section 4(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"401 KAR 10:031 Section 4(2)(a)","page":5,"quote":"1. A minimum concentration of six and zero-tenths (6.0) mg/L as a twenty-four (24) hour av- erage and five and zero-tenths (5.0) mg/L as an instantaneous minimum shall be maintained."}},{"id":"3802be9dd4c62743","parameter":"Dissolved oxygen","value":"1. A minimum concentration of six and zero-tenths (6.0) mg/L as a twenty-four (24) hour av- erage and five and zero-tenths (5.0) mg/L as an instantaneous minimum shall be maintained.","value_num":5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated cold water aquatic habitat (401 KAR 10:031 Section 4(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"401 KAR 10:031 Section 4(2)(a)","page":5,"quote":"1. A minimum concentration of six and zero-tenths (6.0) mg/L as a twenty-four (24) hour av- erage and five and zero-tenths (5.0) mg/L as an instantaneous minimum shall be maintained."}}],"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-KY"},"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-KY"},"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"}]}