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Topton Boro Berks Cnty

Sewage treatment plant, Mertztown, Pennsylvania. NPDES permit PA0020711, in force until Jun 30, 2029. Last 12 months: over a limit 5 times (last June 2026), 36 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (36 values), form Q quarterly (3 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 2 of 16 reports late

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

Period endingParameterReportedLimitOver by
January 2026Phosphorus, total [as P], monthly average2.3 mg/L≤ 2 mg/L15%
March 2026Copper, total [as Cu], daily maximum.062 mg/L≤ .035 mg/L77%
March 2026Copper, total [as Cu], daily maximum.09≤ .086 lb/d5%
April 2026Phosphorus, total [as P], monthly average2.1 mg/L≤ 2 mg/L5%
June 2026Phosphorus, total [as P], monthly average2.9 mg/L≤ 2 mg/L45%

Limits in force (45)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily 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
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 75 lb/dall year
Solids, total suspendedweekly average≤ 113 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≤ 3 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 7.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.5 lb/dMay–Oct
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate 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≤ 5 lb/dall year
Copper, total [as Cu]monthly average≤ .022 mg/Lall year
Copper, total [as Cu]daily maximum≤ .035 mg/Lall year
Copper, total [as Cu]monthly average≤ .055 lb/dall year
Copper, total [as Cu]daily maximum≤ .086 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≤ .05 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .16 mg/Lall year
E. colidaily maximumreport only (#/100mL)all year
BOD, carbonaceous, 20-day, % Removalmonthly averagereport only (%)all year
Solids, total dissolvedquarterly average≤ 1000 mg/Lall year
Solids, total dissolvedquarterly averagereport only (lb/d)all year
Coliform, fecal generalgeometric mean≤ 200 #/100mLall year
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 75 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)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/PA0020711 · MCP: https://passage-data.com/mcp