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Bangor City of

Sewage treatment plant, major discharger, Bangor, Maine. NPDES permit ME0100781, in force until Jul 31, 2031. Last 12 months: over a limit 2 times (last September 2026), 4 required values missing, 4 of 38 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (44 values), outfall 001 form B monthly (10 values), outfall 001 form C monthly (8 values), outfall AM1 form A monthly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 7 of 36 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily maximum55.4 mg/L≤ 50 mg/L11%
September 2026E. coli, thermotol, MF, MTEC, daily maximum2419.2 #/100mL≤ 236 #/100mL925%

Limits in force (64)

ParameterStatisticLimitMonthsOutfall
Flow rateminimumreport only (gal/min)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 4504 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 8286 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 4504 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 6755 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 6755 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 4504 lb/dall year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Solids, total suspendeddaily maximum≤ 11832 lb/dall year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 4504 lb/dall year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 6755 lb/dall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 6755 lb/dall year001
Solids, settleabledaily maximum≤ .3 mL/Lall year001
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–Sep001
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun–Sep001
Phosphorus, total [as P]monthly averagereport only (lb/d)Jun–Sep001
Phosphorus, total [as P]daily maximumreport only (lb/d)Jun–Sep001
Lead, total [as Pb]monthly average≤ 25 ug/Lall year001
Lead, total [as Pb]monthly average≤ 3.81 lb/dall year001
E. coli, thermotol, MF, MTECmonthly geometric mean≤ 64 #/100mLApr–Oct001
E. coli, thermotol, MF, MTECdaily maximum≤ 236 #/100mLApr–Oct001
E. coli, thermotol, MF, MTECdaily maximum≤ 236 #/100mLApr–Oct001
E. coli, thermotol, MF, MTECdaily maximumreport only (#/100mL)Apr–Oct001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 8.7 lb/dall year001
Flow, in conduit or thru treatment plantmonthly average≤ 18 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly totalreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly totalreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .1 mg/LMay–Oct001
Chlorine, total residualdaily maximumreport only (mg/L)May–Sep001
Chlorine, total residualdaily maximum≤ 1 mg/Lall year001
Chlorine, total residualdaily maximum≤ .3 mg/LMay–Oct001
Chlorine, total residualdaily maximum≤ 1 mg/LApr, May001
Mercury, total [as Hg]monthly average≤ 11.3 ng/Lall year001
Mercury, total [as Hg]daily maximum≤ 16.9 ng/Lall year001
Overflowsmonthly totalreport only (occur/mo)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–SepAM1

How strict are these limits?

Cited limits by parameter: Maine's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ME0100781 · MCP: https://passage-data.com/mcp