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Sewage treatment plant, Defiance, Pennsylvania. NPDES permit PA0088609, in force until Jan 31, 2029. Last 12 months: over a limit 10 times (last May 2026), 22 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Solids, total suspended, monthly average | 32 mg/L | ≤ 30 mg/L | 7% |
| February 2026 | Coliform, fecal general, geometric mean | 2313 #/100mL | ≤ 2000 #/100mL | 16% |
| March 2026 | Solids, total suspended, monthly average | 33 mg/L | ≤ 30 mg/L | 10% |
| April 2026 | Solids, total suspended, monthly average | 28 | ≤ 20 lb/d | 40% |
| April 2026 | Solids, total suspended, monthly average | 39 mg/L | ≤ 30 mg/L | 30% |
| April 2026 | Solids, total suspended, weekly average | 32 | ≤ 31 lb/d | 3% |
| May 2026 | Solids, total suspended, monthly average | 51 mg/L | ≤ 30 mg/L | 70% |
| May 2026 | Solids, total suspended, monthly average | 52 | ≤ 20 lb/d | 160% |
| May 2026 | Solids, total suspended, weekly average | 67 mg/L | ≤ 45 mg/L | 49% |
| May 2026 | Solids, total suspended, weekly average | 78 | ≤ 31 lb/d | 152% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly 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 |
| pH | instantaneous maximum | ≤ 9 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 | ≤ 20 lb/d | all year |
| Solids, total suspended | weekly average | ≤ 31 lb/d | all year |
| Solids, total suspended | monthly 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] | semi-annual average | report only (mg/L) | all year |
| Nitrogen, total [as N] | semi-annual average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | semi-annual average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | semi-annual average | report only (lb/d) | all year |
| Nitrogen, Kjeldahl, total [as N] | semi-annual average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | semi-annual average | report only (lb/d) | all year |
| Nitrite + Nitrate total [as N] | semi-annual average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | semi-annual average | report only (lb/d) | all year |
| Phosphorus, total [as P] | semi-annual average | report only (mg/L) | all year |
| Phosphorus, total [as P] | semi-annual average | report only (lb/d) | all year |
| Ultraviolet light intensity | daily minimum | report only (uW/cm2) | 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 | daily maximum | report only (#/100mL) | all year |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | May–Sep |
| Coliform, fecal general | geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Coliform, fecal general | instantaneous maximum | ≤ 1000 #/100mL | May–Sep |
| Coliform, fecal general | instantaneous maximum | ≤ 10000 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 17 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 27 lb/d | all year |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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