{"permit":"IA0023604","name":"CITY OF COLESBURG","state":"IA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/IA0023604"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Colesburg, Iowa","href":"https://www.openstreetmap.org/?mlat=42.63711&mlon=-91.19701#map=14/42.63711/-91.19701"},{"label":"Last 12 months","text":"No values over a limit. 4 required values not reported"},{"label":"Permit","text":"In force until Jul 31, 2030"}],"renewal_due":null,"renewal_check":null,"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":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily minimum","qualifier":">=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"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":"MONTHLY"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"30-day average","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"7-day average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":"<=","value":"60","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"7-day average","qualifier":"<=","value":"90","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.6","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.4","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.4","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.9","unit":"mg/L","report_only":false,"enforceable":true,"months":["OCT"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["SEP"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.2","unit":"mg/L","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.4","unit":"mg/L","report_only":false,"enforceable":true,"months":["FEB"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.6","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2.6","unit":"mg/L","report_only":false,"enforceable":true,"months":["NOV"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"8","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"5.2","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"6.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"7.8","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"6.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["OCT"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"5.3","unit":"mg/L","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"9.4","unit":"mg/L","report_only":false,"enforceable":true,"months":["SEP"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"8.7","unit":"mg/L","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"6.3","unit":"mg/L","report_only":false,"enforceable":true,"months":["FEB"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"7.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"7.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"4.8","unit":"mg/L","report_only":false,"enforceable":true,"months":["NOV"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"5.4","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["OCT"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"3.8","unit":"lb/d","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"5.3","unit":"lb/d","report_only":false,"enforceable":true,"months":["SEP"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.6","unit":"lb/d","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.4","unit":"lb/d","report_only":false,"enforceable":true,"months":["FEB"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.7","unit":"lb/d","report_only":false,"enforceable":true,"months":["APR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4.7","unit":"lb/d","report_only":false,"enforceable":true,"months":["NOV"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"11.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"9.8","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"12.1","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"12.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"10.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["OCT"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"9.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"14.3","unit":"lb/d","report_only":false,"enforceable":true,"months":["SEP"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"12.4","unit":"lb/d","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"11.9","unit":"lb/d","report_only":false,"enforceable":true,"months":["FEB"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"10.1","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"12.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["APR"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"8.5","unit":"lb/d","report_only":false,"enforceable":true,"months":["NOV"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"geometric mean","qualifier":"<=","value":"128","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"30-day average","qualifier":"<=","value":"25","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"7-day average","qualifier":"<=","value":"40","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"30-day average","qualifier":"<=","value":"50","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"7-day average","qualifier":"<=","value":"80","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"}],"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":"IA0023604"},"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=IA0023604"},{"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":"IA0023604"},"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=IA0023604"}]}