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Northwestern Chester Cnty Muni Auth Chester Cnty

Sewage treatment plant, Honey Brook, Pennsylvania. NPDES permit PA0044776, in force until Apr 30, 2029. Last 12 months: over a limit once (last February 2026), 32 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (32 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
22 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
February 2026Nitrogen, total [as N], monthly average37.5 mg/L≤ 28.8 mg/L30%

Limits in force (42)

ParameterStatisticLimitMonths
Color [PT-CO units]instantaneous maximum≤ 75 col unit (pc)all year
Flow, minimum flow rangemonthly averagereport only (MGD)all year
Flow, minimum flow rangeweekly averagereport only (MGD)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 6 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 suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 150 lb/dall year
Solids, total suspendedweekly average≤ 225 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≤ 28.8 mg/Lall year
Nitrogen, total [as N]monthly average≤ 144.1 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 8.1 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 13.5 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 40.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]instantaneous maximum≤ .5 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.8 mg/LApr–Oct
Phosphorus, total [as P]monthly average≤ 2 mg/LJan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]monthly average≤ 9 lb/dApr–Oct
Phosphorus, total [as P]monthly average≤ 10 lb/dJan, Feb, Mar, Nov, Dec
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≤ .5 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1.7 mg/Lall year
E. coliinstantaneous maximumreport only (#/100mL)all year
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalgeometric mean≤ 200 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 14 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≤ 21 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 38 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 68 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 125 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 102 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 187 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/PA0044776 · MCP: https://passage-data.com/mcp