{"permit":"OK0041491","name":"Foss Reservoir M.C.D.","state":"OK","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/OK0041491"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Foss, Oklahoma","href":"https://www.openstreetmap.org/?mlat=35.39269&mlon=-99.170062#map=14/35.39269/-99.170062"},{"label":"Last 12 months","text":"No values over a limit. 3 of 16 reports filed late"},{"label":"Permit","text":"Expired May 31, 2012; its limits still apply until a new permit is issued, and EPA still expects the reports"}],"renewal_due":null,"renewal_check":{"offered_because":"permit_expired","application_due":"2011-12-03","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/OK0041491#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"BRINE REJECTED FROM ELEC DRK W"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"BRINE REJECTED FROM ELEC DRK W"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"BRINE REJECTED FROM ELEC DRK W"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"BRINE REJECTED FROM ELEC DRK W"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"instantaneous maximum","qualifier":"<=","value":".099","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"BRINE REJECTED FROM ELEC DRK W"},{"outfall":"TX1","parameter":"Whole effluent toxicity - retest #1","parameter_code":"22415","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Whole effluent toxicity - retest #1","parameter_code":"22415","statistic":"minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Whole effluent toxicity - retest #2","parameter_code":"22416","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Whole effluent toxicity - retest #2","parameter_code":"22416","statistic":"minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Solids, total dissolved- 180 deg. 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C","parameter_code":"70300","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Pass/Fail Static Renewal 7Day Chronic Pimephales promelas","parameter_code":"TGP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"%Mortality Static Renewal 7Day Chronic Pimephales Promelas","parameter_code":"TJP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"% Mortality 21 Day Chronic Daphnia Magna","parameter_code":"TJT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas","parameter_code":"TLP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Pass/Fail Survival 21 Day Chronic Daphnia Magna","parameter_code":"TLT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas","parameter_code":"TOP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas","parameter_code":"TPP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Coef Of Var Static Renewal 7Day Chronic Pimephales promelas","parameter_code":"TQP6C","statistic":"7-day minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"% Coefficient Of Variation 21 Day Chronic Daphnia Magna","parameter_code":"TQT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"LOEC Lethal Survival Static Renewal 21 Day Chronic Daphnia magna","parameter_code":"TXT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"LOEC Sub-Lethal Reproduction Static Renewal 21 Day Chronic Daphnia magna","parameter_code":"TYT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"},{"outfall":"TX1","parameter":"Pass/Fail Reproduction 21 Day Chronic Daphnia Magna","parameter_code":"TZT3C","statistic":"minimum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"WHOLE EFFL TOXI - 001"}],"next":[{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"OK0041491"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=OK0041491"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"OK0041491"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=OK0041491"}]}