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North Coventry TWP Muni Auth Chester Cnty

Sewage treatment plant, major discharger, Pottstown, Pennsylvania. NPDES permit PA0025437, in force until Feb 28, 2029. Last 12 months: over a limit once (last December 2025), 60 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (30 values), form Q quarterly (4 values), form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 17 reports late

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

Period endingParameterReportedLimitOver by
December 2025Phosphorus, total [as P], monthly average2.14 mg/L≤ 2 mg/L7%

Limits in force (47)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 503 lb/dall year
Solids, total suspendedweekly average≤ 754 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 168 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 335 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 34 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .5 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1.6 mg/Lall year
E. coliinstantaneous maximumreport only (#/100mL)all year
PCBs Dry Weather Analysisdaily maximumreport only (pg/L)all year
Toxicity [chronic], Ceriodaphnia dubiadaily maximumreport only (tox chronic)all year
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox chronic)all year
Solids, total dissolvedquarterly average≤ 1000 mg/Lall year
Solids, total dissolveddaily maximum≤ 2000 mg/Lall year
Solids, total dissolvedquarterly averagereport only (lb/d)all year
Solids, total dissolveddaily maximumreport only (lb/d)all year
Coliform, fecal generalgeometric mean≤ 200 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 335 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 419 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 503 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 671 lb/dJan, Feb, Mar, Apr, Nov, Dec
TU Static 7Day Chronic Ceriodaphnia dubiadaily maximumreport only (tox chronic)all year
Static 7Day Chronic Pimephales Promelasdaily maximumreport only (tox chronic)all year

How strict are these limits?

Cited limits by parameter: Pennsylvania'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/PA0025437 · MCP: https://passage-data.com/mcp