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North Berwick Sanitary Dist

Sewage treatment plant, North Berwick, Maine. NPDES permit ME0101885, in force until Apr 30, 2031. Last 12 months: over a limit 2 times (last April 2026), 2 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Last report on file
July 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 6 of 19 reports late

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

Period endingParameterReportedLimitOver by
April 2026Solids, suspended percent removal, monthly average minimum72 %≥ 85 %87%
April 2026Solids, total suspended, monthly average173 lb/d≤ 163 lb/d6%

Limits in force (40)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec001
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/LJan, Feb, Mar, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 163 lb/dJan, Feb, Mar, Nov, Dec001
BOD, 5-day, 20 deg. Cdaily maximum≤ 271 lb/dJan, Feb, Mar, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 224 lb/dJan, Feb, Mar, Nov, Dec001
pHminimum≥ 6 SUJan, Feb, Mar, Nov, Dec001
pHmaximum≤ 9 SUJan, Feb, Mar, Nov, Dec001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec001
Solids, total suspendeddaily maximum≤ 50 mg/LJan, Feb, Mar, Nov, Dec001
Solids, total suspendedmonthly average≤ 163 lb/dJan, Feb, Mar, Nov, Dec001
Solids, total suspendeddaily maximum≤ 271 lb/dJan, Feb, Mar, Nov, Dec001
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Nov, Dec001
Solids, total suspendedweekly average≤ 244 lb/dJan, Feb, Mar, Nov, Dec001
Solids, settleabledaily maximum≤ .3 mL/LJan, Feb, Mar, Nov, Dec001
Cadmium, total [as Cd]monthly average≤ 1.2 ug/LJan, Feb, Mar, Nov, Dec001
Cadmium, total [as Cd]monthly average≤ .006 lb/dJan, Feb, Mar, Nov, Dec001
Lead, total [as Pb]monthly average≤ 6.3 ug/LJan, Feb, Mar, Nov, Dec001
Lead, total [as Pb]monthly average≤ .03 lb/dJan, Feb, Mar, Nov, Dec001
Thallium, total [as Tl]monthly average≤ 2.6 ug/LJan, Feb, Mar, Nov, Dec001
Thallium, total [as Tl]monthly average≤ .014 lb/dJan, Feb, Mar, Nov, Dec001
E. coli, thermotol, MF, MTECmonthly geometric mean≤ 64 #/100mLJan, Feb, Mar, Nov, Dec001
E. coli, thermotol, MF, MTECdaily maximum≤ 236 #/100mLJan, Feb, Mar, Nov, Dec001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 18 ug/LJan, Feb, Mar, Nov, Dec001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .098 lb/dJan, Feb, Mar, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly average≤ 1 MGDJan, Feb, Mar, Nov, Dec001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Nov, Dec001
Analytical Chemistryvaluereport only (N=0;Y=1)Jan, Feb, Mar, Nov, Dec001
Mercury, total [as Hg]monthly average≤ 7 ng/LJan, Feb, Mar, Nov, Dec001
Mercury, total [as Hg]daily maximum≤ 10.5 ng/LJan, Feb, Mar, Nov, Dec001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Nov, Dec001
Solids, suspended percent removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Nov, Dec001
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)Jan, Feb, Mar, Nov, Dec001
Noel Statre 10Day Chronic Salvel. Salmoniddaily minimumreport only (%)Jan, Feb, Mar, Nov, Dec001
NOAEL Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)Jan, Feb, Mar, Nov, Dec001
NOAEL Static 48Hr Acute Salvel. Salmoniddaily minimum≥ 15 %Jan, Feb, Mar, Nov, Dec001
Temperature, water deg. centigradedaily maximumreport only (deg C)Apr, Jul, Oct002
Flow ratedaily maximumreport only (gal/min)Apr, Jul, Oct002
Specific conductancedaily maximumreport only (umho/cm)Apr, Jul, Oct002
E. coli, thermotol, MF, MTECdaily maximumreport only (#/100mL)Apr, Jul, Oct002

How strict are these limits?

Cited limits by parameter: Maine's rules and the federal ones.

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