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Muni Auth of Westmoreland Cnty

Sewage treatment plant, Mt Pleasant, Pennsylvania. NPDES permit PA0217361, in force until Sep 30, 2030. Last 12 months: over a limit 2 times (last June 2026), 29 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (29 values), form Q quarterly, form S twice a year, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026Solids, total suspended, weekly average69 mg/L≤ 45 mg/L53%
June 2026Nitrogen, ammonia total [as N], weekly average5.5 mg/L≤ 5 mg/L10%

Limits in force (45)

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. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport 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≤ 63 lb/dall year
Solids, total suspendedweekly average≤ 94 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]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 9.9 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.3 mg/LMay–Oct
Nitrogen, ammonia total [as N]weekly average≤ 14.8 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 20.6 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6.9 lb/dMay–Oct
Nitrogen, ammonia total [as N]weekly average≤ 31 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 10.3 lb/dMay–Oct
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Zinc, total [as Zn]semi-annual averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximumreport 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≤ .43 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1.41 mg/Lall year
E. coliquarterly averagereport only (#/100mL)all year
E. colidaily maximumreport only (#/100mL)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≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 11 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 16.5 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 52 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 22.94 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 79 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 34.4 lb/dMay–Oct

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/PA0217361 · MCP: https://passage-data.com/mcp