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Lehigh TWP Muni Auth Northampton Cnty

Sewage treatment plant, Walnutport, Pennsylvania. NPDES permit PA0063240, in force until Jul 31, 2030. Last 12 months: over a limit 12 times (last June 2026), 33 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (33 values), form Q quarterly (4 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, carbonaceous [5 day, 20 C], monthly average> 46.3 mg/L≤ 25 mg/L—
February 2026BOD, carbonaceous [5 day, 20 C], monthly average> 83≤ 62.5 lb/d—
February 2026BOD, carbonaceous [5 day, 20 C], weekly average> 176.3≤ 100 lb/d—
February 2026BOD, carbonaceous [5 day, 20 C], weekly average> 77.8 mg/L≤ 40 mg/L—
March 2026BOD, carbonaceous [5 day, 20 C], monthly average31.2 mg/L≤ 25 mg/L25%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average77.9≤ 62.5 lb/d25%
March 2026BOD, carbonaceous [5 day, 20 C], weekly average40.4 mg/L≤ 40 mg/L1%
March 2026Coliform, fecal general, geometric mean> 193.9 #/100mL≤ 2000 #/100mL—
March 2026Coliform, fecal general, instantaneous maximum> 20000 #/100mL≤ 10000 #/100mL—
April 2026BOD, carbonaceous [5 day, 20 C], weekly average55.9 mg/L≤ 40 mg/L40%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average41 mg/L≤ 40 mg/L3%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average40.9 mg/L≤ 40 mg/L2%

Limits in force (41)

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. Cweekly 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≤ 75 lb/dall year
Solids, total suspendedweekly average≤ 112 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly 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≤ 3.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 8.7 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 26.2 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
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Copper, total [as Cu]quarterly averagereport only (mg/L)all year
Zinc, total [as Zn]quarterly averagereport only (mg/L)all 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≤ .11 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .37 mg/Lall year
E. coliinstantaneous maximumreport only (#/100mL)all year
Solids, total dissolvedquarterly average≤ 1000 mg/Lall year
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 62.5 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 100 lb/dall year

How strict are these limits?

Cited limits by parameter: Pennsylvania'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/PA0063240 · MCP: https://passage-data.com/mcp