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Sewerage Systems, major discharger, Royersford, Pennsylvania. NPDES permit PA0051934, in force until Aug 31, 2030. Last 12 months: over a limit 2 times (last April 2026), 29 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| April 2026 | Coliform, fecal general, geometric mean | 222 #/100mL | ≤ 200 #/100mL | 11% |
| April 2026 | Coliform, fecal general, instantaneous maximum | 1300 #/100mL | ≤ 1000 #/100mL | 30% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 425 lb/d | all year | 002 |
| Solids, total suspended | weekly average | ≤ 638 lb/d | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 114 lb/d | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 002 |
| Ultraviolet light transmittance | daily minimum | report only (%) | all year | 002 |
| PCBs Wet Weather Analysis | daily maximum | report only (pg/L) | all year | 002 |
| PCBs Dry Weather Analysis | daily maximum | report only (pg/L) | all year | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | all year | 002 |
| Solids, total dissolved | quarterly average | ≤ 1000 mg/L | all year | 002 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | May–Sep | 002 |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | May–Sep | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 30 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 284 lb/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 425 lb/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 002 |
| TU Static 7Day Chronic Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 002 |
| Static 7Day Chronic Pimephales Promelas | daily maximum | report only (tox chronic) | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | instantaneous maximum | report only (mg/L) | all year | 003 |
| pH | instantaneous maximum | report only (SU) | all year | 003 |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | instantaneous maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | instantaneous maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | instantaneous maximum | report only (mg/L) | all year | 003 |
| Iron, dissolved [as Fe] | instantaneous maximum | report only (mg/L) | all year | 003 |
| Coliform, fecal general | instantaneous maximum | report only (#/100mL) | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | instantaneous maximum | report only (mg/L) | all year | 003 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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