BERWICK SEWER DISTRICT

NPDES permit ME0101397 · Major POTW · effective, expires 2030-06-30 · 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.

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

1values over a limit
20required values missing, on 2 form(s)
3of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli, thermotol, MF, MTEC (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (69)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 6.5 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 17 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 87 lb/d Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 275 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 146 lb/d Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 459 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 131 lb/d Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 413 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 14 mg/L Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 23 mg/L Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 126 lb/d Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG <= 275 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 212 lb/d Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY MX <= 459 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 21 mg/L Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 190 lb/d Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 413 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, settleableDAILY MX <= .3 mL/L all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]ROLL AVG <= 31 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 7 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 16 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 65 lb/d Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 147 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= .75 mg/L May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG <= 4.4 lb/d May, Jun, Jul, Aug, Sep
001Chromium, total [as Cr]MO AVG <= 1.5 mg/L all year
001Chromium, total [as Cr]DAILY MX <= 2 mg/L all year
001Chromium, total [as Cr]MO AVG <= 9.1 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 13 lb/d all year
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= 2.9 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 2.5 lb/d all year
001E. coli, thermotol, MF, MTECMO GEO <= 100 #/100mL all year
001E. coli, thermotol, MF, MTECDAILY MX <= 236 #/100mL all year
001Flow, in conduit or thru treatment plantMO AVG <= 1.1 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .1 mg/L all year
001Chlorine, total residualDAILY MX <= .3 mg/L all year
001Analytical ChemistryVALUE report only all year
001Mercury, total [as Hg]MO AVG <= 5.2 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 7.7 ng/L all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaVALUE report only all year
001Noel Statre 10Day Chronic Salvel. SalmonidDAILY MN >= 5.6 % all year
001NOAEL Static 48Hr Acute Ceriodaphnia dubiaVALUE report only all year
001NOAEL Static 48Hr Acute Salvel. SalmonidVALUE report only 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