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South Berwick Sewer District

Sewage treatment plant, major discharger, South Berwick, Maine. NPDES permit ME0100820, in force until Jun 30, 2030. Last 12 months: no values over a limit, 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (44 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (58)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 14 mg/LJun–Sep
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 22 mg/LJun–Sep
BOD, 5-day, 20 deg. Cmonthly average≤ 142 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 63 lb/dJun–Sep
BOD, 5-day, 20 deg. Cdaily maximum≤ 236 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 106 lb/dJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 95 mg/LJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 213 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 95 lb/dJun–Sep
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedmonthly average≤ 14 mg/LJun–Sep
Solids, total suspendeddaily maximum≤ 50 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendeddaily maximum≤ 22 mg/LJun–Sep
Solids, total suspendedmonthly average≤ 142 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedmonthly average≤ 63 lb/dJun–Sep
Solids, total suspendeddaily maximum≤ 236 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendeddaily maximum≤ 106 lb/dJun–Sep
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 20 mg/LJun–Sep
Solids, total suspendedweekly average≤ 213 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 95 lb/dJun–Sep
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, total [as N]rolling average≤ 15 lb/dApr–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 1 mg/LMay–Sep
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep
Phosphorus, total [as P]monthly average≤ 4.8 lb/dMay–Sep
Phosphorus, total [as P]daily maximumreport only (lb/d)May–Sep
Coliform, fecal MF, MFC broth, 44.5 Cmonthly average≤ 14 #/100mLall year
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 34 #/100mLall year
Priority Pollutantsvaluereport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .567 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Enterococcimonthly average≤ 8 #/100mLApr–Oct
Enterococcidaily maximum≤ 54 #/100mLApr–Oct
Mercury, total [as Hg]monthly average≤ 4.5 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 6.8 ng/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, suspended percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiavaluereport only (%)all year
Noel Statre 10Day Chronic Salvel. Salmoniddaily minimumreport only (%)all year
NOAEL Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)all year
NOAEL Static 48Hr Acute Salvel. Salmoniddaily 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/ME0100820 · MCP: https://passage-data.com/mcp