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Sewage treatment plant, Enos, Indiana. NPDES permit IN0063479, in force until Sep 30, 2029. Last 12 months: no values over a limit, 4 required values missing, 1 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov | 002 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 12 mg/L | all year | 002 |
| Solids, total suspended | maximum weekly average | ≤ 18 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 85 lb/d | all year | 002 |
| Solids, total suspended | maximum weekly average | ≤ 128 lb/d | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.6 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1.6 mg/L | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.4 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.8 lb/d | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 11.4 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 11.4 lb/d | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 17 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 002 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 71 lb/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 107 lb/d | all year | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
Cited limits by parameter: Indiana's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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