{"permit":"SD0021695","name":"Alcester, City 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/SD0021695"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Alcester, South Dakota","href":"https://www.openstreetmap.org/?mlat=43.0203890&mlon=-96.635472#map=14/43.0203890/-96.635472"},{"label":"Last 12 months","text":"No values over a limit. 1 of 13 reports filed late"},{"label":"Permit","text":"In force until Jun 30, 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":"001","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 the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","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 the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","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 the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","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 effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum 7-day average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day 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maximum","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"8.4","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","NOV","DEC"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day 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maximum","qualifier":"<=","value":"14.7","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["SEP"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["OCT"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"30-day geometric mean","qualifier":"<=","value":"630","unit":"#/100mL","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"daily maximum","qualifier":"<=","value":"1178","unit":"#/100mL","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP"],"limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Toxicity [acute], Ceriodaphnia 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minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."},{"outfall":"001","parameter":"Oil and grease visual","parameter_code":"84066","statistic":"daily maximum","qualifier":"<=","value":"0","unit":"abst=0;prst=1","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent wet well, through the outfall line to East Brule Creek."}],"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":"SD0021695"},"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}, 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