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Freeport Sewer District

Sewage treatment plant, major discharger, Freeport, Maine. NPDES permit ME0101036 expired Feb 28, 2021; its limits still apply. Last 12 months: no values over a limit. 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, 2 required values missing, 1 of 12 reports late

Limits in force (30)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJun–Sep
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/LJun–Sep
BOD, 5-day, 20 deg. Cmonthly average≤ 188 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 123 lb/dJun–Sep
BOD, 5-day, 20 deg. Cdaily maximum≤ 313 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 204 lb/dJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 212 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 183 lb/dJun–Sep
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≤ 188 lb/dall year
Solids, total suspendeddaily maximum≤ 313 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 212 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .75 MGDall year
Chlorine, total residualmonthly average≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .3 mg/Lall year
Mercury, total [as Hg]monthly average≤ 24 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 36 ng/Lall year
Coliform, fecal generalmonthly geometric mean≤ 15 MPN/100mLall year
Coliform, fecal generaldaily maximum≤ 50 MPN/100mLall 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/ME0101036 · MCP: https://passage-data.com/mcp