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Sewage treatment plant, Hanover, Indiana. NPDES permit IN0020702, in force until Mar 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 188 lb/d | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 282 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 15 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 4.7 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 63 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 19 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 94 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 29 lb/d | May–Nov | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | all year | 001 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | daily maximum | report only (CFU/100mL) | Apr–Oct | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 156 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 250 lb/d | all year | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov | 006 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| pH | daily minimum | ≥ 6 SU | all year | 006 |
| pH | daily maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Solids, total suspended | monthly average | ≤ 18 mg/L | May–Nov | 006 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Solids, total suspended | maximum weekly average | ≤ 27 mg/L | May–Nov | 006 |
| Solids, total suspended | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| Solids, total suspended | monthly average | report only (lb/d) | May–Nov | 006 |
| Solids, total suspended | maximum weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| Solids, total suspended | maximum weekly average | report only (lb/d) | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.6 mg/L | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.4 mg/L | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 4.7 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (lb/d) | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | all year | 006 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 006 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 006 |
| E. coli, colony forming units [CFU] | daily maximum | report only (CFU/100mL) | Apr–Oct | 006 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | May–Nov | 006 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 23 mg/L | May–Nov | 006 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | May–Nov | 006 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 006 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | report only (lb/d) | May–Nov | 006 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 006 |
Cited limits by parameter: Indiana's rules and the federal ones.
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