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MT Pleasant TWP Muni Auth Westmoreland Cnty

Sewage treatment plant, Brinkerton, Pennsylvania. NPDES permit PA0253171 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 7 times (last June 2026), 26 required values missing, 1 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (26 values), form Q quarterly (1 value), form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 2 of 17 reports late

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

Period endingParameterReportedLimitOver by
November 2025Coliform, fecal general, geometric mean> 34 #/100mL≤ 2000 #/100mL—
November 2025Coliform, fecal general, instantaneous maximum> 2420 #/100mL≤ 10000 #/100mL—
March 2026Coliform, fecal general, instantaneous maximum12100 #/100mL≤ 10000 #/100mL21%
April 2026Coliform, fecal general, instantaneous maximum12100 #/100mL≤ 10000 #/100mL21%
May 2026Coliform, fecal general, geometric mean> 145 #/100mL≤ 200 #/100mL—
May 2026Coliform, fecal general, instantaneous maximum> 12100 #/100mL≤ 1000 #/100mL—
June 2026Coliform, fecal general, instantaneous maximum2053 #/100mL≤ 1000 #/100mL105%

Limits in force (41)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 4 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
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≤ 80 lb/dall year
Solids, total suspendedweekly average≤ 120 lb/dall year
Solids, total suspendedmonthly averagereport 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≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 9 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 8 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 24 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly averagereport only (lb/d)May–Oct
Nitrogen, ammonia total [as N]weekly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
Manganese, total [as Mn]daily maximumreport only (mg/L)all year
Aluminum, total [as Al]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
E. coliinstantaneous maximumreport only (#/100mL)all year
Ultraviolet light transmittanceinstantaneous minimumreport only (%)all year
Ultraviolet light transmittancemonthly averagereport only (%)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≤ 25 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≤ 37.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 27 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 65 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 41 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 100 lb/dJan, Feb, Mar, Apr, Nov, Dec

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/PA0253171 · MCP: https://passage-data.com/mcp