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Wallace Run RD LLC

Sewerage Systems, Darlington, Pennsylvania. NPDES permit PA0217999, in force until May 31, 2030. Last 12 months: over a limit 9 times (last March 2026), 14 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (14 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
31 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 2025BOD, carbonaceous [5 day, 20 C], monthly average17.4 mg/L≤ 10 mg/L74%
October 2025Solids, total suspended, instantaneous maximum48.4 mg/L≤ 20 mg/L142%
October 2025Solids, total suspended, monthly average48.4 mg/L≤ 10 mg/L384%
December 2025Coliform, fecal general, instantaneous maximum2420 #/100mL≤ 1000 #/100mL142%
December 2025Coliform, fecal general, monthly average2420 #/100mL≤ 200 #/100mL1110%
January 2026Coliform, fecal general, instantaneous maximum2420 #/100mL≤ 1000 #/100mL142%
January 2026Coliform, fecal general, monthly average2420 #/100mL≤ 200 #/100mL1110%
March 2026Nitrogen, ammonia total [as N], instantaneous maximum10.6 mg/L≤ 9 mg/L18%
March 2026Nitrogen, ammonia total [as N], monthly average10.6 mg/L≤ 4.5 mg/L136%

Limits in force (16)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedinstantaneous maximum≤ 20 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]instantaneous maximum≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]instantaneous maximum≤ 9 mg/LJan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ .00136 MGDall year
Chlorine, total residualmonthly average≤ .08 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .19 mg/Lall year
Coliform, fecal generalmonthly average≤ 200 #/100mLall year
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]instantaneous maximum≤ 20 mg/Lall year

New limits from Jun 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.02 mg/Ltighter0.03 mg/L (9 values)1.5×
Chlorine, total residual, monthly average0.02 mg/Ltighter0.01 mg/L (9 values)0.5×

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/PA0217999 · MCP: https://passage-data.com/mcp