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Madawaska Town of

Sewage treatment plant, Madawaska, Maine. NPDES permit ME0101681 expired Dec 31, 2024; its limits still apply. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (24 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026Flow, in conduit or thru treatment plant, monthly average1.03 MGD≤ .674 MGD53%
May 2026Flow, in conduit or thru treatment plant, monthly average.68 MGD≤ .674 MGD1%

Limits in force (26)

ParameterStatisticLimitMonths
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≤ 169 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 281 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 253 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≤ 169 lb/dall year
Solids, total suspendeddaily maximum≤ 281 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 253 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
E. coli, thermotol, MF, MTECmonthly geometric mean≤ 126 #/100mLMay–Sep
E. coli, thermotol, MF, MTECmonthly geometric mean≤ 126 #/100mLApr–Oct
E. coli, thermotol, MF, MTECdaily maximum≤ 949 #/100mLMay–Sep
E. coli, thermotol, MF, MTECdaily maximum≤ 949 #/100mLApr–Oct
Flow, in conduit or thru treatment plantmonthly average≤ .674 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Mercury, total [as Hg]monthly average≤ 7.1 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 10.6 ng/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %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/ME0101681 · MCP: https://passage-data.com/mcp