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Penn Sylvan Realty Corp

Sewerage Systems, Mohnton, Pennsylvania. NPDES permit PA0051861 expired Oct 31, 2025; its limits still apply. Last 12 months: over a limit 4 times (last February 2026), 41 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (11 values), outfall 101 form A monthly (15 values), outfall 001 form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 20 reports late

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

Period endingOutfallParameterReportedLimitOver by
October 2025101BOD, carbonaceous [5 day, 20 C], monthly average26.3 mg/L≤ 25 mg/L5%
December 2025001Solids, total suspended, monthly average75 mg/L≤ 30 mg/L150%
February 2026001BOD, carbonaceous [5 day, 20 C], monthly average70.15 mg/L≤ 25 mg/L181%
February 2026001Solids, total suspended, monthly average520 mg/L≤ 30 mg/L1633%

Limits in force (30)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Nitrogen, total [as N]annual averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 11 mg/Lall year001
Nitrogen, Kjeldahl, total [as N]annual averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]annual averagereport only (mg/L)all year001
Phosphorus, total [as P]annual averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .5 mg/Lall year001
Chlorine, total residualinstantaneous maximum≤ 1.6 mg/Lall year001
Coliform, fecal generalgeometric mean≤ 2000 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
pHinstantaneous minimum≥ 6 SUApr–Oct101
pHdaily maximum≤ 9 SUApr–Oct101
Solids, total suspendedmonthly average≤ 30 mg/LApr–Oct101
Nitrogen, total [as N]monthly averagereport only (mg/L)Apr–Oct101
Nitrogen, total [as N]daily maximumreport only (mg/L)Apr–Oct101
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Apr–Oct101
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr–Oct101
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)Apr–Oct101
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)Apr–Oct101
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Apr–Oct101
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Apr–Oct101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Apr–Oct101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Apr–Oct101
Coliform, fecal generalmonthly average≤ 200 #/100mLApr–Oct101
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LApr–Oct101

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/PA0051861 · MCP: https://passage-data.com/mcp