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Sewage treatment plant, major discharger, Souderton, Pennsylvania. NPDES permit PA0021857, in force until Apr 30, 2031. Last 12 months: over a limit 2 times (last March 2026), 46 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Coliform, fecal general, instantaneous maximum | 6600 CFU/100mL | ≤ 1000 CFU/100mL | 560% |
| March 2026 | Coliform, fecal general, instantaneous maximum | 2500 CFU/100mL | ≤ 1000 CFU/100mL | 150% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 500 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 750 lb/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | quarterly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.8 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.6 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 30 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 60 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | Apr–Oct | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 16.5 lb/d | Apr–Oct | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 33 lb/d | Jan, Feb, Mar, Nov, Dec | 001 |
| Boron, total [as B] | quarterly average | report only (ug/L) | all year | 001 |
| Boron, total [as B] | daily maximum | report only (ug/L) | all year | 001 |
| Boron, total [as B] | quarterly average | report only (lb/d) | all year | 001 |
| Boron, total [as B] | daily maximum | report only (lb/d) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | quarterly average | report only (ug/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (ug/L) | all year | 001 |
| Iron, dissolved [as Fe] | quarterly average | report only (lb/d) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (lb/d) | all year | 001 |
| Thallium, total [as Tl] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | quarterly average | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | quarterly average | report only (lb/d) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | 001 |
| Dichlorobromomethane | monthly average | report only (ug/L) | all year | 001 |
| Dichlorobromomethane | instantaneous maximum | report only (ug/L) | all year | 001 |
| Chloroform | monthly average | report only (ug/L) | all year | 001 |
| Chloroform | instantaneous maximum | report only (ug/L) | all year | 001 |
| Chlorodibromomethane | quarterly average | report only (ug/L) | all year | 001 |
| Chlorodibromomethane | daily maximum | report only (ug/L) | all year | 001 |
| Chlorodibromomethane | quarterly average | report only (lb/d) | all year | 001 |
| Chlorodibromomethane | daily maximum | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .012 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .038 mg/L | all year | 001 |
| E. coli | instantaneous maximum | report only (#/100mL) | all year | 001 |
| Cyanide, free available | monthly average | report only (ug/L) | all year | 001 |
| Cyanide, free available | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free available | monthly average | report only (lb/d) | all year | 001 |
| Cyanide, free available | daily maximum | report only (lb/d) | all year | 001 |
| Perfluorooctanoic acid (PFOA) | instantaneous maximum | report only (ug/L) | all year | 001 |
| Perfluorooctanesulfonate | instantaneous maximum | report only (ug/L) | all year | 001 |
| Perfluorobutanesulfonic acid (PFBS) | instantaneous maximum | report only (ug/L) | all year | 001 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | instantaneous maximum | report only (ug/L) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | all year | 001 |
| Solids, total dissolved | quarterly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | quarterly average | report only (lb/d) | all year | 001 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 23 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 417 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 250 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 667 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 375 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | all year | 001 |
| TU Static 7Day Chronic Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 001 |
| Static 7Day Chronic Pimephales Promelas | daily maximum | report only (tox chronic) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | annual average | report only (mg/L) | all year | 002 |
| pH | annual average | report only (SU) | all year | 002 |
| Solids, total suspended | annual average | report only (mg/L) | all year | 002 |
| Oil & Grease | annual average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | annual average | report only (mg/L) | all year | 002 |
| Iron, dissolved [as Fe] | annual average | report only (mg/L) | all year | 002 |
| Coliform, fecal general | annual average | report only (#/100mL) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | annual average | report only (mg/L) | all year | 002 |
| Parameter | New limit | From | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|---|
| Cyanide, free available, daily maximum | 0.13 lb/d | May 1, 2029 | new | — | — |
| Cyanide, free available, daily maximum | 8 ug/L | May 1, 2029 | new | — | — |
| Cyanide, free available, instantaneous maximum | 11 ug/L | May 1, 2029 | new | — | — |
| Cyanide, free available, monthly average | 0.073 lb/d | May 1, 2029 | new | — | — |
| Cyanide, free available, monthly average | 4 ug/L | May 1, 2029 | new | — | — |
| Chloroform, instantaneous maximum | 15.6 ug/L | Apr 1, 2031 | new | — | — |
| Chloroform, monthly average | 6.24 ug/L | Apr 1, 2031 | new | — | — |
| Dichlorobromomethane, instantaneous maximum | 4.31 ug/L | Apr 1, 2031 | new | — | — |
| Dichlorobromomethane, monthly average | 1.73 ug/L | Apr 1, 2031 | new | — | — |
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/PA0021857 · MCP: https://passage-data.com/mcp