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Ogunquit Sewer District

Sewage treatment plant, major discharger, Ogunquit, Maine. NPDES permit ME0100986 expired Nov 30, 2023; its limits still apply. Last 12 months: over a limit 2 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (25 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 4 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, daily maximum62 #/100mL≤ 50 #/100mL24%
July 2026Coliform, fecal general, daily maximum83 #/100mL≤ 50 #/100mL66%

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≤ 320 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 534 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 480 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≤ 320 lb/dall year
Solids, total suspendeddaily maximum≤ 534 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 480 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 1.28 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .1 mg/LApr–Sep
Chlorine, total residualdaily maximum≤ .65 mg/LJan, Feb, Mar, Oct, Nov, Dec
Chlorine, total residualdaily maximum≤ .3 mg/LApr–Sep
Mercury, total [as Hg]monthly average≤ 19.3 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 29 ng/Lall 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

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/ME0100986 · MCP: https://passage-data.com/mcp