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Sewage treatment plant, major discharger, Pottstown, Pennsylvania. NPDES permit PA0026786, in force until Nov 30, 2026. Last 12 months: over a limit 4 times (last April 2026), 42 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], monthly average | < 8.3 mg/L | ≤ 8 mg/L | 4% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 21.3 mg/L | ≤ 16 mg/L | 33% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 16.2 mg/L | ≤ 16 mg/L | 1% |
| April 2026 | Solids, total suspended, weekly average | 49 mg/L | ≤ 45 mg/L | 9% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | monthly average | report only (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 | ≤ 3215 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 4823 lb/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 16 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 857 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1714 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | quarterly average | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Boron, total [as B] | quarterly average | report only (mg/L) | all year | 001 |
| Boron, total [as B] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | ≤ .04 mg/L | all year | 001 |
| Manganese, total [as Mn] | quarterly average | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ .325 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | monthly average | ≤ .0315 mg/L | all year | 001 |
| Bromoform | quarterly average | report only (mg/L) | all year | 001 |
| Bromoform | instantaneous maximum | report only (mg/L) | all year | 001 |
| Chlorodibromomethane | monthly average | ≤ .0231 mg/L | 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 | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ 1.6 mg/L | all year | 001 |
| E. coli | instantaneous maximum | report only (#/100mL) | all year | 001 |
| Cyanide, free available | monthly average | ≤ .0249 mg/L | all year | 001 |
| PCBs Wet Weather Analysis | daily maximum | report only (pg/L) | all year | 001 |
| PCBs Dry Weather Analysis | daily maximum | report only (pg/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 | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 3000 mg/L | all year | 001 |
| Solids, total dissolved | monthly average | ≤ 200290 lb/d | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 240000 lb/d | all year | 001 |
| Bromide [as Br] | daily maximum | report only (mg/L) | 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 | ≤ 20 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 | ≤ 30 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 2679 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 2143 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 4287 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 3215 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| Tritium, total | daily maximum | report only (pCi/L) | 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] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 002 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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