SCARBOROUGH SANITARY DISTRICT

NPDES permit ME0102059 · Major POTW · administratively continued, expires 2024-10-31 · 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 2024-10-31 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 12 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among ME permits in EPA's filings — check your permit).

Limits in force (25)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 625 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1042 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 938 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspendedMO AVG <= 625 lb/d all year
001Solids, total suspendedDAILY MX <= 1042 lb/d all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 938 lb/d all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Enterococci: group D, MF trans, M-E, EIAMO GEO <= 8 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Enterococci: group D, MF trans, M-E, EIADAILY MX <= 54 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG <= 2.5 MGD all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001Mercury, total [as Hg]MO AVG <= 82.5 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 123.8 ng/L all year
001Coliform, fecal generalMO GEO <= 14 #/100mL all year
001Coliform, fecal generalDAILY MX <= 31 #/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % 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