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Sewage treatment plant, Upland, Indiana. NPDES permit IN0036978, in force until Jan 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 237.8 lb/d | all year |
| Solids, total suspended | maximum weekly average | ≤ 356.7 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.22 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.85 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1.83 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.78 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.67 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 14.67 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 14.51 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 22.04 lb/d | Jan, Feb, Mar, Apr, Dec |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Chlorine, total residual | monthly average | ≤ .06 mg/L | Apr–Oct |
| Chlorine, total residual | daily maximum | ≤ .06 mg/L | Apr–Oct |
| Chlorine, total residual | daily minimum | ≥ .5 mg/L | Apr–Oct |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Oct |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 198.2 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 317.1 lb/d | all year |
| Phosphorus, total percent removal | monthly average minimum | report only (%) | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
Cited limits by parameter: Indiana's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/IN0036978 · MCP: https://passage-data.com/mcp