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West Grove Boro Auth Chester Cnty

Sewage treatment plant, West Grove, Pennsylvania. NPDES permit PA0024066, in force until Jul 31, 2031. Last 12 months: over a limit 11 times (last May 2026), 35 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (36 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
11 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, total [as N], monthly average14.88 mg/L≤ 11.6 mg/L28%
November 2025Nitrogen, total [as N], monthly average13.12 mg/L≤ 11.6 mg/L13%
December 2025Nitrogen, ammonia total [as N], monthly average19.34 mg/L≤ 14.4 mg/L34%
December 2025Nitrogen, total [as N], monthly average26.77 mg/L≤ 11.6 mg/L131%
December 2025Nitrogen, total [as N], monthly average39.9≤ 24.2 lb/d65%
January 2026Nitrogen, total [as N], monthly average17.01 mg/L≤ 11.6 mg/L47%
February 2026Nitrogen, total [as N], monthly average19.33 mg/L≤ 11.6 mg/L67%
February 2026Nitrogen, total [as N], monthly average30.6≤ 24.2 lb/d26%
March 2026Nitrogen, total [as N], monthly average< 13.28 mg/L≤ 11.6 mg/L14%
April 2026Nitrogen, total [as N], monthly average< 14.83 mg/L≤ 11.6 mg/L28%
May 2026Nitrogen, total [as N], monthly average13.05 mg/L≤ 11.6 mg/L13%

Limits in force (38)

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. 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 suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 62.6 lb/dall year
Solids, total suspendeddaily maximum≤ 93.8 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly average≤ 11.6 mg/Lall year
Nitrogen, total [as N]monthly average≤ 24.2 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 4.8 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 14.4 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 30 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 average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 4.2 lb/dall year
Copper, total [as Cu]monthly average≤ .022 mg/Lall year
Copper, total [as Cu]daily maximum≤ .039 mg/Lall year
Zinc, total [as Zn]monthly averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximumreport only (mg/L)all year
Ultraviolet light intensitydaily minimumreport only (uW/cm2)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
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 52.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 83.4 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year

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/PA0024066 · MCP: https://passage-data.com/mcp