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Lehigh Cnty Auth

Sewerage Systems, Schnecksville, Pennsylvania. NPDES permit PA0034029 expired Jun 30, 2024; its limits still apply. Last 12 months: over a limit 21 times (last June 2026), 51 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (51 values), form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
30 values over a limit, 0 required values missing, 1 of 13 reports late

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

All 21 values over a limit
Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], monthly average10.3 mg/L≤ 9 mg/L14%
January 2026Nitrogen, ammonia total [as N], monthly average2.5≤ 1.1 lb/d127%
February 2026Nitrogen, ammonia total [as N], monthly average17.1 mg/L≤ 9 mg/L90%
February 2026Nitrogen, ammonia total [as N], monthly average4.8≤ 1.1 lb/d336%
February 2026Nitrogen, total [as N], monthly average8.8≤ 5.4 lb/d63%
March 2026Nitrogen, ammonia total [as N], monthly average28.3 mg/L≤ 9 mg/L214%
March 2026Nitrogen, ammonia total [as N], monthly average7.9≤ 1.1 lb/d618%
March 2026Nitrogen, total [as N], monthly average9.4≤ 5.4 lb/d74%
April 2026Nitrogen, ammonia total [as N], monthly average34.1 mg/L≤ 9 mg/L279%
April 2026Nitrogen, ammonia total [as N], monthly average9.3≤ 1.1 lb/d745%
April 2026Nitrogen, total [as N], monthly average11.2≤ 5.4 lb/d107%
May 2026Nitrogen, ammonia total [as N], monthly average36.4 mg/L≤ 3 mg/L1113%
May 2026Nitrogen, ammonia total [as N], monthly average9.8≤ .36 lb/d2622%
May 2026Nitrogen, total [as N], monthly average10.7≤ 5.4 lb/d98%
May 2026Solids, total suspended, weekly average17 mg/L≤ 15 mg/L13%
May 2026Solids, total suspended, weekly average4.5≤ 4.4 lb/d2%
June 2026Nitrogen, ammonia total [as N], monthly average14 mg/L≤ 3 mg/L367%
June 2026Nitrogen, ammonia total [as N], monthly average3.2≤ .36 lb/d789%
June 2026Nitrogen, total [as N], monthly average7.9≤ 5.4 lb/d46%
June 2026Zinc, total [as Zn], daily maximum.303 mg/L≤ .151 mg/L101%
June 2026pH, instantaneous minimum5.2 SU≥ 6 SU—

Limits in force (63)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedweekly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 2.9 lb/dall year
Solids, total suspendedweekly average≤ 4.4 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 5.4 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 9 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Oct
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .36 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.1 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrite total [as N]monthly averagereport only (lb/d)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly average≤ 4.5 lb/dall year
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
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ .57 lb/dall year
Zinc, total [as Zn]monthly average≤ .13 mg/Lall year
Zinc, total [as Zn]daily maximum≤ .151 mg/Lall year
Zinc, total [as Zn]monthly averagereport only (lb/d)all year
Aluminum, total [as Al]annual averagereport only (mg/L)all year
Aluminum, total [as Al]daily maximumreport only (mg/L)all year
Aluminum, total [as Al]annual averagereport only (lb/d)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≤ .04 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .1 mg/Lall year
Solids, total dissolvedmonthly average≤ 1000 mg/Lall year
Solids, total dissolveddaily maximum≤ 2000 mg/Lall year
Solids, total dissolvedmonthly averagereport only (lb/d)all 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≤ 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≤ 2.9 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5.8 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 4.4 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 8.8 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]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/PA0034029 · MCP: https://passage-data.com/mcp