{"permit":"SD0027481","name":"Lead, City of (CSO)","state":"SD","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/SD0027481"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Lead, South Dakota","href":"https://www.openstreetmap.org/?mlat=44.3557470&mlon=-103.753843#map=14/44.3557470/-103.753843"},{"label":"Last 12 months","text":"No values over a limit. 6 of 33 reports filed late"},{"label":"Permit","text":"Expired Jun 30, 2017; 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":"2017-01-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SD0027481#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":"2026-08-31","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"004","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the lower Lead CSO structure to Gold Run Creek."},{"outfall":"004","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the lower Lead CSO structure to Gold Run Creek."},{"outfall":"004","parameter":"Flow rate","parameter_code":"00056","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the lower Lead CSO structure to Gold Run Creek."},{"outfall":"004","parameter":"Rainfall duration","parameter_code":"00135","statistic":"monthly total","qualifier":null,"value":null,"unit":"hr/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the lower Lead CSO structure to Gold Run Creek."},{"outfall":"004","parameter":"Rainfall duration","parameter_code":"00135","statistic":"daily maximum","qualifier":null,"value":null,"unit":"hr/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the lower Lead CSO structure to Gold Run Creek."},{"outfall":"004","parameter":"BOD, 5-day, 20 deg. 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[{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=SD0027481"}]}