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Sewage treatment plant, major discharger, Gibsonia, Pennsylvania. NPDES permit PA0027669, in force until May 31, 2031. Last 12 months: over a limit 3 times (last February 2026), 46 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Coliform, fecal general, geometric mean | > 20 CFU/100mL | ≤ 2000 CFU/100mL | — |
| January 2026 | Coliform, fecal general, instantaneous maximum | > 4840 CFU/100mL | ≤ 10000 CFU/100mL | — |
| February 2026 | Solids, total suspended, maximum weekly average | 2709 | ≤ 2253 lb/d | 20% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 1502 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 2253 lb/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | weekly average | report only (mg/L) | all year |
| Solids, total suspended | monthly average | report only (lb/d) | all year |
| Solids, total suspended | daily maximum | report only (lb/d) | all year |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 2.3 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.6 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 75 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 155 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 115 lb/d | May–Oct |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 232.5 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year |
| Boron, total [as B] | monthly average | report only (ug/L) | all year |
| Boron, total [as B] | daily maximum | report only (ug/L) | all year |
| Boron, total [as B] | monthly average | report only (lb/d) | all year |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year |
| Iron, total [as Fe] | monthly average | report only (lb/d) | all year |
| Iron, dissolved [as Fe] | monthly average | report only (ug/L) | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (ug/L) | all year |
| Iron, dissolved [as Fe] | monthly average | report only (lb/d) | all year |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year |
| Acenaphthene | monthly average | report only (ug/L) | all year |
| Acenaphthene | daily maximum | report only (ug/L) | all year |
| Acenaphthene | monthly average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| E. coli | instantaneous maximum | report only (#/100mL) | all year |
| Ultraviolet light transmittance | daily minimum | report only (%) | all year |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year |
| Coliform, fecal general | geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | May–Sep |
| Coliform, fecal general | instantaneous maximum | ≤ 10000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | May–Sep |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 11.4 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7.9 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 17.1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 11.8 mg/L | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 570.4 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 395.3 lb/d | May–Oct |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 855.6 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 592.9 lb/d | May–Oct |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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