{"permit":"SC0021300","name":"LYMAN TOWN OF","state":"SC","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/SC0021300"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Lyman, South Carolina","href":"https://www.openstreetmap.org/?mlat=34.9362956&mlon=-82.118174#map=14/34.9362956/-82.118174"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Jan 31, 2029"}],"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":[],"upcoming":[{"parameter":"Bis[chloromethyl] ether","outfall":"001","limit":0.001,"unit":"mg/L","statistic":"daily maximum","statistic_code":"DD","begin":"2028-12-01","kind":"tighter","now":{"median":0,"n":11},"times_limit":0},{"parameter":"Bis[chloromethyl] ether","outfall":"001","limit":0.0007,"unit":"mg/L","statistic":"monthly average","statistic_code":"MK","begin":"2028-12-01","kind":"tighter","now":{"median":0,"n":11},"times_limit":0},{"parameter":"Chlorine, total residual","outfall":"001","limit":0.032,"unit":"mg/L","statistic":"daily maximum","statistic_code":"DD","begin":"2028-12-01","kind":"tighter","now":{"median":0,"n":10},"times_limit":0},{"parameter":"Chlorine, total residual","outfall":"001","limit":0.018,"unit":"mg/L","statistic":"monthly average","statistic_code":"MK","begin":"2028-12-01","kind":"tighter","now":{"median":0,"n":10},"times_limit":0}],"limits":[{"outfall":"001","parameter":"Hydrogen peroxide","parameter_code":"00139","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Hydrogen peroxide","parameter_code":"00139","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"=","value":"21.4","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"=","value":"32.1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"=","value":"803","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"=","value":"1205","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":"=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"=","value":"8.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"=","value":"1126","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"=","value":"1689","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"=","value":"4.29","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","NOV","DEC"],"limit_set":"0011A"},{"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":["MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"=","value":"6.44","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","NOV","DEC"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"=","value":"3","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"=","value":"161","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","NOV","DEC"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"=","value":"75","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"=","value":"242","unit":"lb/d","report_only":false,"enforceable":true,"months":["JAN","FEB","NOV","DEC"],"limit_set":"0011A"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"weekly average","qualifier":"=","value":"113","unit":"lb/d","report_only":false,"enforceable":true,"months":["MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"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":"0011A"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Hardness, total [as CaCO3]","parameter_code":"00900","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Hardness, total [as CaCO3]","parameter_code":"00900","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Bis[chloromethyl] ether","parameter_code":"34268","statistic":"monthly average","qualifier":"=","value":".00092","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Bis[chloromethyl] ether","parameter_code":"34268","statistic":"daily maximum","qualifier":"=","value":".0013","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Bis[chloromethyl] ether","parameter_code":"34268","statistic":"monthly average","qualifier":"=","value":".035","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Bis[chloromethyl] ether","parameter_code":"34268","statistic":"daily maximum","qualifier":"=","value":".049","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"weekly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"=","value":".021","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"=","value":".036","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"=","value":".79","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"=","value":"1.35","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"MPN/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0014"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"daily maximum","qualifier":"<=","value":"349","unit":"MPN/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0014"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"MPN/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0014"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"daily maximum","qualifier":"<=","value":"800","unit":"MPN/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0014"},{"outfall":"001","parameter":"Peracetic Acid","parameter_code":"51674","statistic":"daily maximum","qualifier":"=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Peracetic Acid","parameter_code":"51674","statistic":"daily maximum","qualifier":"=","value":"37.53","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chemical oxygen demand [COD]","parameter_code":"80108","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chemical oxygen demand [COD]","parameter_code":"80108","statistic":"weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chemical oxygen demand [COD]","parameter_code":"80108","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Chemical oxygen demand [COD]","parameter_code":"80108","statistic":"weekly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"BOD, 5-day, percent removal","parameter_code":"81010","statistic":"monthly average minimum","qualifier":"=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"Solids, suspended percent removal","parameter_code":"81011","statistic":"monthly average minimum","qualifier":"=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"0011A"},{"outfall":"001","parameter":"LC50 Static 48Hr Acute Ceriodaphnia dubia","parameter_code":"TAA3B","statistic":"daily minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"0012A"},{"outfall":"001","parameter":"%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia","parameter_code":"TCP3B","statistic":"monthly average","qualifier":"=","value":"25","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"0012A"},{"outfall":"001","parameter":"%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia","parameter_code":"TCP3B","statistic":"daily maximum","qualifier":"=","value":"40","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"0012A"},{"outfall":"001","parameter":"IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia","parameter_code":"TRP3B","statistic":"daily minimum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"0012A"}],"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":"SC0021300"},"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=SC0021300"},{"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":"SC0021300"},"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=SC0021300"}]}