{"permit":"ME0101397","name":"BERWICK SEWER DISTRICT","state":"ME","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/ME0101397"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Berwick, Maine","href":"https://www.openstreetmap.org/?mlat=43.257083&mlon=-70.843611#map=14/43.257083/-70.843611"},{"label":"Last 12 months","text":"Over a limit once, last in February 2026 (E. coli, thermotol, MF, MTEC). 20 required values not reported. 2 of 12 reports filed late"},{"label":"Permit","text":"In force until Jun 30, 2030"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":1,"over_by":[["E. coli, thermotol, MF, MTEC",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily minimum","qualifier":">=","value":"6.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"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","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"17","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"50","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"87","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"275","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"146","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"459","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"131","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"413","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"14","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"23","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"50","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"126","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"275","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"212","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"459","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"21","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"190","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"413","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Solids, settleable","parameter_code":"00545","statistic":"daily maximum","qualifier":"<=","value":".3","unit":"mL/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"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":null},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"rolling average","qualifier":"<=","value":"31","unit":"lb/d","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"<=","value":"7","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"16","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"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":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"<=","value":"65","unit":"lb/d","report_only":false,"enforceable":true,"months":["JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"147","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":["JAN","FEB","MAR","APR","MAY","OCT","NOV","DEC"],"limit_set":null},{"outfall":"001","parameter":"Nitrogen, Kjeldahl, total [as N]","parameter_code":"00625","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrogen, Kjeldahl, total [as N]","parameter_code":"00625","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrogen, Kjeldahl, total [as N]","parameter_code":"00625","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrogen, Kjeldahl, total [as N]","parameter_code":"00625","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Nitrite + Nitrate total [as N]","parameter_code":"00630","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":"<=","value":".75","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP"],"limit_set":null},{"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":["MAY","JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":"<=","value":"4.4","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP"],"limit_set":null},{"outfall":"001","parameter":"Chromium, total [as Cr]","parameter_code":"01034","statistic":"monthly average","qualifier":"<=","value":"1.5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Chromium, total [as Cr]","parameter_code":"01034","statistic":"daily maximum","qualifier":"<=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Chromium, total [as Cr]","parameter_code":"01034","statistic":"monthly average","qualifier":"<=","value":"9.1","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Chromium, total [as Cr]","parameter_code":"01034","statistic":"daily maximum","qualifier":"<=","value":"13","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"monthly average","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"daily maximum","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"monthly average","qualifier":"<=","value":"2.9","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"daily maximum","qualifier":"<=","value":"2.5","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"E. coli, thermotol, MF, MTEC","parameter_code":"31633","statistic":"monthly geometric mean","qualifier":"<=","value":"100","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"E. coli, thermotol, MF, MTEC","parameter_code":"31633","statistic":"daily maximum","qualifier":"<=","value":"236","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":"<=","value":"1.1","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":".1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":".3","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Analytical Chemistry","parameter_code":"51477","statistic":"value","qualifier":null,"value":null,"unit":"N=0;Y=1","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Mercury, total [as Hg]","parameter_code":"71900","statistic":"monthly average","qualifier":"<=","value":"5.2","unit":"ng/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Mercury, total [as Hg]","parameter_code":"71900","statistic":"daily maximum","qualifier":"<=","value":"7.7","unit":"ng/L","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia","parameter_code":"TBP3B","statistic":"value","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"Noel Statre 10Day Chronic Salvel. Salmonid","parameter_code":"TBQ6F","statistic":"daily minimum","qualifier":">=","value":"5.6","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"NOAEL Static 48Hr Acute Ceriodaphnia dubia","parameter_code":"TDA3B","statistic":"value","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"001","parameter":"NOAEL Static 48Hr Acute Salvel. Salmonid","parameter_code":"TDA6F","statistic":"value","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":null}],"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":"ME0101397"},"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=ME0101397"},{"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":"ME0101397"},"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=ME0101397"}]}