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North Haven Town of

Sewage treatment plant, North Haven, Maine. NPDES permit ME0101907, in force until Feb 28, 2030. 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 (22 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (22)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 376 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 125 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 78 mg/Lall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 26 lb/dall year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, settleablemonthly averagereport only (mL/L)all year
Solids, settleabledaily maximumreport only (mL/L)all year
Fecal coliform, MPN, EC med, 44.5 Cmonthly average≤ 14 MPN/100mLall year
Fecal coliform, MPN, EC med, 44.5 Cdaily maximum≤ 31 MPN/100mLall year
Flow, in conduit or thru treatment plantmonthly average≤ 40000 gal/dall year
Chlorine, total residualdaily maximum≤ .3 mg/Lall year
BOD, percent removal [total]monthly average minimum≥ 30 %all year
Enterococcimonthly average≤ 8 MPN/100mLApr–Oct
Enterococcidaily maximum≤ 54 MPN/100mLApr–Oct
Mercury, total [as Hg]monthly average≤ 50.1 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 75.2 ng/Lall year
Solids, suspended percent removalmonthly average minimum≥ 50 %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/ME0101907 · MCP: https://passage-data.com/mcp