{"permit":"MS0024163","name":"LAUREL POTW, NUMBER 1","state":"MS","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MS0024163"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Laurel, Mississippi","href":"https://www.openstreetmap.org/?mlat=31.656972&mlon=-89.147389#map=14/31.656972/-89.147389"},{"label":"Last 12 months","text":"Over a limit 3 times, last in September 2026 (Copper, total recoverable)"},{"label":"Permit","text":"In force until Apr 30, 2031"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":3,"over_by":[["Copper, total recoverable",3]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Copper, total recoverable","times":3,"find_limits":{"parameter":"copper","place":"US-MS","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-MS&medium=surface_water"}],"upcoming":[{"parameter":"Nitrogen, ammonia total [as N]","outfall":"001","limit":111,"unit":"lb/d","statistic":"monthly average","statistic_code":"MK","begin":"2029-05-28","kind":"tighter","months":["MAY","JUN","JUL","AUG","SEP","OCT"],"now":{"median":1.405,"n":6},"times_limit":0.0127},{"parameter":"Nitrogen, ammonia total [as N]","outfall":"001","limit":1.8,"unit":"mg/L","statistic":"monthly average","statistic_code":"MK","begin":"2029-05-28","kind":"tighter","months":["MAY","JUN","JUL","AUG","SEP","OCT"],"now":{"median":0.055,"n":6},"times_limit":0.0306},{"parameter":"Nitrogen, ammonia total [as N]","outfall":"001","limit":2.7,"unit":"mg/L","statistic":"maximum weekly average","statistic_code":"MS","begin":"2029-05-28","kind":"tighter","months":["MAY","JUN","JUL","AUG","SEP","OCT"],"now":{"median":0.07,"n":6},"times_limit":0.0259}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":"22.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"926","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"1852","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":"1389","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":"<=","value":"2778","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"1852","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":"<=","value":"2778","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":"<=","value":"3","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"124","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":"<=","value":"185","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"monthly average","qualifier":"<=","value":".00692","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"maximum weekly average","qualifier":"<=","value":".00969","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":"<=","value":"7.4","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":".015","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"maximum weekly average","qualifier":"<=","value":".026","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"maximum weekly average","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"BOD, 5-day, percent removal","parameter_code":"81010","statistic":"minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Solids, suspended percent removal","parameter_code":"81011","statistic":"minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Sludge settleability 30 minute","parameter_code":"82219","statistic":"minimum","qualifier":null,"value":null,"unit":"mL/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"},{"outfall":"001","parameter":"Sludge settleability 30 minute","parameter_code":"82219","statistic":"maximum","qualifier":null,"value":null,"unit":"mL/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED DOMESTIC WASTEWATER"}],"next":[{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"copper","place":"US-MS","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-MS&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-MS&medium=surface_water","page":"https://passage-data.com/limits/US-MS/copper"},{"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":"MS0024163"},"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=MS0024163"},{"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":"MS0024163"},"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=MS0024163"}]}