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Warren Sanitary District

Sewage treatment plant, Warren, Maine. NPDES permit ME0102253, in force until Mar 31, 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 (29 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 (43)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly averagereport only (mg/L)Jun–Sep
Oxygen, dissolved [DO]daily maximumreport only (mg/L)Jun–Sep
Oxygen, dissolved [DO]weekly averagereport only (mg/L)Jun–Sep
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 25 mg/LJun–Sep
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendeddaily maximumreport only (mg/L)Jun–Sep
Solids, total suspendeddaily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedmonthly average≤ 17 lb/dJun–Sep
Solids, total suspendedmonthly average≤ 61 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendeddaily maximumreport only (lb/d)Jun–Sep
Solids, total suspendeddaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 45 mg/LJun–Sep
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 20 lb/dJun–Sep
Solids, total suspendedweekly average≤ 92 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, settleabledaily maximum≤ .3 mL/Lall year
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 14 #/100mLall year
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 31 #/100mLall year
Flow, in conduit or thru treatment plantmonthly average≤ .0795 MGDJun–Sep
Flow, in conduit or thru treatment plantmonthly average≤ .2442 MGDJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jun–Sep
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Enterococcimonthly average≤ 8 #/100mLApr–Oct
Enterococcidaily maximum≤ 54 #/100mLApr–Oct
Mercury, total [as Hg]monthly average≤ 57.7 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 86.6 ng/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJun–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun–Sep
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dJun–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 51 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Jun–Sep
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJun–Sep
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 20 lb/dJun–Sep
BOD, carbonaceous [5 day, 20 C]weekly average≤ 81 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
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/ME0102253 · MCP: https://passage-data.com/mcp