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Milbridge Town of

Sewage treatment plant, Milbridge, Maine. NPDES permit ME0100404 expired Jul 31, 2020; its limits still apply. Last 12 months: over a limit 2 times (last July 2026), 4 required values missing, 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (29 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026Chlorine, total residual, daily maximum1.1 mg/L≤ .052 mg/L2015%
July 2026BOD, 5-day, 20 deg. C, monthly average38 mg/L≤ 30 mg/L27%

Limits in force (32)

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≤ 18 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 29 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 26 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≤ 18 lb/dall year
Solids, total suspendeddaily maximum≤ 29 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 26 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]monthly average≤ .047 lb/dall year
Copper, total [as Cu]daily maximum≤ .012 lb/dall year
Flow, in conduit or thru treatment plantmonthly average≤ 70000 gal/dall year
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year
Chlorine, total residualdaily maximum≤ .052 mg/Lall year
Analytical Chemistryvaluereport only (N=0;Y=1)all year
Analytical Chemistryvaluereport only (N=0;Y=1)all year
Coliform, fecal generalmonthly geometric mean≤ 15 #/100mLall year
Coliform, fecal generaldaily maximum≤ 50 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulatavaluereport only (%)all year
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulatavaluereport only (%)all year
NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)valuereport only (%)all year
NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)valuereport only (%)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ME0100404 · MCP: https://passage-data.com/mcp