{"permit":"SD0025194","name":"Astoria, Town of","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/SD0025194"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Astoria, South Dakota","href":"https://www.openstreetmap.org/?mlat=44.566194&mlon=-96.541972#map=14/44.566194/-96.541972"},{"label":"Last 12 months","text":"No values over a limit. 1 of 12 reports filed late"},{"label":"Permit","text":"In force until Mar 31, 2031"}],"renewal_due":null,"renewal_check":null,"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":"002","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from Cell 4 to an unnamed tributary of an unnamed wetland."},{"outfall":"002","parameter":"Temperature, water deg. fahrenheit","parameter_code":"00011","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from Cell 4 to an unnamed tributary of an unnamed wetland."},{"outfall":"002","parameter":"Flow rate","parameter_code":"00056","statistic":"30-day average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from Cell 4 to an unnamed tributary of an unnamed wetland."},{"outfall":"002","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 Cell 4 to an unnamed tributary of an unnamed wetland."},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. 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