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Lewiston-Auburn Water Pollutio

Sewage treatment plant, major discharger, Lewiston, Maine. NPDES permit ME0101478, in force until Aug 31, 2031. Last 12 months: over a limit 2 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form AM monthly (1 value), form C monthly (43 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026E. coli, thermotol, MF, MTEC, daily maximum> 2419.6 #/100mL≤ 949 #/100mL—
June 2026Mercury, total [as Hg], daily maximum10 ng/L≤ 9.8 ng/L2%

Limits in force (44)

ParameterStatisticLimitMonths
Flow rateminimumreport only (gal/min)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 3553 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximum≤ 15894 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 5329 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Solids, total suspendedmonthly average≤ 3553 lb/dall year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximum≤ 15753 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 5329 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–Sep
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximum≤ 2.5 lb/dall year
Aluminum, total [as Al]monthly averagereport only (mg/L)all year
Aluminum, total [as Al]daily maximumreport only (mg/L)all year
Aluminum, total [as Al]monthly average≤ 16 lb/dall year
Aluminum, total [as Al]daily maximum≤ 40 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .24 mg/Lall year
Analytical Chemistryvaluereport only (N=0;Y=1)all year
Mercury, total [as Hg]monthly average≤ 6.5 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 9.8 ng/Lall year
Overflowsdaily maximumreport only (occur/mo)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year
Noel Statre 10Day Chronic Salvel. Salmoniddaily minimumreport only (%)all year
NOAEL Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)all year
NOAEL Static 48Hr Acute Salvel. Salmoniddaily minimumreport only (%)all year

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/ME0101478 · MCP: https://passage-data.com/mcp