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West Sunbury Boro Muni Auth Butler Cnty

Sewage treatment plant, West Sunbury, Pennsylvania. NPDES permit PA0221830, in force until Jul 31, 2030. Last 12 months: over a limit 3 times (last January 2026), 20 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (20 values), form S twice a year, form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 14 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average6.1 mg/L≤ 3 mg/L103%
December 2025Nitrogen, ammonia total [as N], monthly average9.8 mg/L≤ 9 mg/L9%
January 2026Nitrogen, ammonia total [as N], monthly average10.4 mg/L≤ 9 mg/L16%

Limits in force (26)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)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≤ 7 lb/dall year
Solids, total suspendedweekly average≤ 10.5 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, total [as N]semi-annual averagereport 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
Phosphorus, total [as P]semi-annual averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .1 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .4 mg/Lall year
E. coliinstantaneous maximumreport only (#/100mL)all year
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
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≤ 5.8 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 9.3 lb/dall year

New limits from Jul 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average2.7 mg/L (May–Oct)tighter2 mg/L (3 values, 1 below detection)0.741×
Nitrogen, ammonia total [as N], monthly average8.1 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)tighter6.85 mg/L (6 values, 1 below detection)0.846×

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/PA0221830 · MCP: https://passage-data.com/mcp