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Old Orchard Beach Town of

Sewage treatment plant, major discharger, Old Orchard Beach, Maine. NPDES permit ME0101524 expired May 31, 2020; its limits still apply. Last 12 months: over a limit 5 times (last September 2026), 2 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (24 values), form B monthly (3 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 3 of 24 reports late

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

Period endingParameterReportedLimitOver by
June 2026Coliform, fecal general, daily maximum55.6 #/100mL≤ 50 #/100mL11%
July 2026Coliform, fecal general, daily maximum1011.2 #/100mL≤ 50 #/100mL1922%
July 2026Coliform, fecal general, monthly geometric mean56.536 #/100mL≤ 15 #/100mL277%
August 2026Coliform, fecal general, daily maximum194 #/100mL≤ 50 #/100mL288%
September 2026Chlorine, total residual, daily maximum1.39 mg/L≤ .88 mg/L58%

Limits in force (30)

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≤ 876 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 1460 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 1314 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≤ 876 lb/dall year
Solids, total suspendeddaily maximum≤ 1460 lb/dall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 1314 lb/dall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 3.5 MGDall year
Chlorine, total residualmonthly average≤ .56 mg/Lall year
Chlorine, total residualdaily maximum≤ .88 mg/Lall year
Analytical Chemistryvaluereport only (N=0;Y=1)all year
Analytical Chemistryvaluereport only (N=0;Y=1)all year
Mercury, total [as Hg]monthly average≤ 28.5 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 42.8 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
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulatadaily minimumreport only (%)all year
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulatadaily minimumreport only (%)all year
NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)daily minimumreport only (%)all year
NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)daily minimumreport 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/ME0101524 · MCP: https://passage-data.com/mcp