PORTLAND WATER DISTRICT

NPDES permit ME0102075 · Major POTW · administratively continued, expires 2022-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2022-03-31 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

4values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Coliform, fecal general (2), BOD, 5-day, 20 deg. C (1), Solids, total suspended (1).

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 (58)

OutfallParameterStatisticLimitMonths
001Flow rateMINIMUM report only all year
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 <= 4954 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 4954 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 33366 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 7431 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 7431 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 <= 4954 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 4954 lb/d all year
001Solids, total suspendedDAILY MX <= 52980 lb/d all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 7431 lb/d all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 7431 lb/d all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Nitrogen, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]ANNL AVG report only Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG report only 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 <= .27 mg/L all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001Analytical ChemistryVALUE report only all year
001Analytical ChemistryVALUE report only all year
001Coliform, fecal generalMO GEO <= 15 #/100mL all year
001Coliform, fecal generalDAILY MX <= 50 #/100mL all year
001Coliform, fecal generalDAILY MX <= 200 #/100mL all year
001OverflowsDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulataDAILY MN >= 2.4 % all year
001NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulataDAILY MN report only all year
001NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)DAILY MN report only all year
001NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)DAILY MN 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