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Presque Isle Utilities District

Sewage treatment plant, major discharger, Presque Isle, Maine. NPDES permit ME0100561, in force until Dec 31, 2028. Last 12 months: over a limit 2 times (last April 2026), 6 required values missing, 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form C monthly (40 values), outfall 003 form A monthly (1 value)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 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
October 2025E. coli, thermotol, MF, MTEC, daily maximum325.5 #/100mL≤ 236 #/100mL38%
April 2026Flow, in conduit or thru treatment plant, monthly average2.7491 MGD≤ 2.31 MGD19%

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 578 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 963 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 867 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Solids, total suspendedmonthly average≤ 578 lb/dall year001
Solids, total suspendeddaily maximum≤ 963 lb/dall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 867 lb/dall year001
Solids, settleabledaily maximum≤ .3 mL/Lall year001
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–Sep001
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun–Sep001
Phosphorus, total [as P]monthly average≤ 14 lb/dJun–Sep001
Phosphorus, total [as P]daily maximumreport only (lb/d)Jun–Sep001
Phosphorus, total [as P]weekly averagereport only (ppm)Jun–Sep001
Phosphorus, total [as P]weekly averagereport only (lb/d)Jun–Sep001
Copper, total [as Cu]daily maximumreport only (ug/L)all year001
Copper, total [as Cu]monthly average≤ .44 lb/dall year001
Aluminum, total [as Al]daily maximumreport only (ug/L)all year001
Aluminum, total [as Al]monthly average≤ 1.2 lb/dall year001
E. coli, thermotol, MF, MTECmonthly geometric mean≤ 100 #/100mLApr–Oct001
E. coli, thermotol, MF, MTECdaily maximum≤ 236 #/100mLApr–Oct001
Flow, in conduit or thru treatment plantmonthly average≤ 2.31 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .1 mg/Lall year001
Chlorine, total residualdaily maximum≤ .3 mg/Lall year001
Analytical Chemistryvaluereport only (N=0;Y=1)all year001
Mercury, total [as Hg]monthly average≤ 16.6 ng/Lall year001
Mercury, total [as Hg]daily maximum≤ 24.9 ng/Lall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year001
Noel Statre 10Day Chronic Salvel. Salmoniddaily minimumreport only (%)all year001
NOAEL Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)all year001
NOAEL Static 48Hr Acute Salvel. Salmoniddaily minimumreport only (%)all year001
Overflowsmonthly totalreport only (occur/mo)all year003

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/ME0100561 · MCP: https://passage-data.com/mcp