NORTH TOWN OF

NPDES permit SC0047821 · Minor POTW · administratively continued, expires 2021-11-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2021-11-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 14 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among SC permits in EPA's filings — check your permit).

Limits in force (31)

OutfallParameterStatisticLimitMonths
002Oxygen, dissolved [DO]MINIMUM >= 1 mg/L all year
002BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
002BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
002BOD, 5-day, 20 deg. CMO AVG <= 75 lb/d all year
002BOD, 5-day, 20 deg. CWKLY AVG <= 108 lb/d all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Solids, total suspendedMO AVG <= 90 mg/L all year
002Solids, total suspendedWKLY AVG <= 135 mg/L all year
002Solids, total suspendedMO AVG <= 150 lb/d all year
002Solids, total suspendedWKLY AVG <= 225 lb/d all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]WKLY AVG report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]WKLY AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]WKLY AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]WKLY AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG <= .2 MGD all year
002Flow, in conduit or thru treatment plantWKLY AVG <= .2 MGD all year
002Chlorine, total residualMO AVG <= .5 mg/L all year
002Chlorine, total residualDAILY MX <= 1 mg/L all year
002Chlorine, total residualMO AVG <= .83 lb/d all year
002Chlorine, total residualDAILY MX <= 1.67 lb/d all year
002E. coli30DAVGEO <= 126 MPN/100mL all year
002E. coliDAILY MX <= 349 MPN/100mL all year
002E. coli30DAVGEO <= 126 MPN/100mL all year
002E. coliDAILY MX <= 800 MPN/100mL all year
002BOD, 5-day, percent removalMO AV MN >= 65 % all year
002Solids, suspended percent removalMO AV MN >= 65 % all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states