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Atglen Boro Sew Auth Chester Cnty

Sewage treatment plant, Atglen, Pennsylvania. NPDES permit PA0024651, in force until Apr 30, 2027. Last 12 months: over a limit 25 times (last April 2026), 34 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (34 values), form Q quarterly (1 value), form Z yearly (5 values)
Renewal application due
Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 2 of 17 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
November 2025Solids, total suspended, monthly average42 mg/L≤ 30 mg/L40%
November 2025Solids, total suspended, weekly average79 mg/L≤ 45 mg/L76%
December 2025BOD, carbonaceous [5 day, 20 C], weekly average50 mg/L≤ 40 mg/L25%
December 2025Solids, total suspended, monthly average50 mg/L≤ 30 mg/L67%
December 2025Solids, total suspended, weekly average119 mg/L≤ 45 mg/L164%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average27.5 mg/L≤ 25 mg/L10%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average64.4 mg/L≤ 40 mg/L61%
January 2026Nitrogen, ammonia total [as N], monthly average14.3 mg/L≤ 10 mg/L43%
January 2026Solids, total suspended, monthly average62 mg/L≤ 30 mg/L107%
January 2026Solids, total suspended, weekly average132 mg/L≤ 45 mg/L193%
January 2026Solids, total suspended, weekly average84≤ 58 lb/d45%
February 2026Nitrogen, ammonia total [as N], monthly average15≤ 12.9 lb/d16%
February 2026Nitrogen, ammonia total [as N], monthly average25 mg/L≤ 10 mg/L150%
February 2026Solids, total suspended, monthly average44 mg/L≤ 30 mg/L47%
February 2026Solids, total suspended, weekly average80 mg/L≤ 45 mg/L78%
March 2026Nitrogen, ammonia total [as N], monthly average14.8≤ 12.9 lb/d15%
March 2026Nitrogen, ammonia total [as N], monthly average21.6 mg/L≤ 10 mg/L116%
March 2026Solids, total suspended, weekly average79 mg/L≤ 45 mg/L76%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average27 mg/L≤ 25 mg/L8%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average79 mg/L≤ 40 mg/L98%
April 2026Nitrogen, ammonia total [as N], monthly average18 mg/L≤ 10 mg/L80%
April 2026Solids, total suspended, monthly average44≤ 39 lb/d13%
April 2026Solids, total suspended, monthly average74 mg/L≤ 30 mg/L147%
April 2026Solids, total suspended, weekly average122≤ 58 lb/d110%
April 2026Solids, total suspended, weekly average244 mg/L≤ 45 mg/L442%

Limits in force (42)

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 suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 39 lb/dall year
Solids, total suspendedweekly average≤ 58 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 averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 12.9 lb/dall year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)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
Nitrogen, Totalmonthly totalreport only (lb)all year
Nitrogen, Totalannual totalreport only (lb)all year
Nitrogen, Totalmonthly totalreport only (lb)all year
Nitrogen, Totalannual total≤ 7306 lball year
Nitrogen, Ammonia Totalmonthly totalreport only (lb)all year
Nitrogen, Ammonia Totalannual totalreport only (lb)all year
Nitrogen, Kjeldahl Totalmonthly totalreport only (lb)all year
Nitrite Plus Nitrate Totalmonthly totalreport only (lb)all year
Phosphorus, Totalmonthly totalreport only (lb)all year
Phosphorus, Totalannual totalreport only (lb)all year
Phosphorus, Totalmonthly totalreport only (lb)all year
Phosphorus, Totalannual total≤ 974 lball 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≤ 32 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 52 lb/dall 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/PA0024651 · MCP: https://passage-data.com/mcp