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Sewage treatment plant, Laotto, Indiana. NPDES permit IN0058611, in force until Aug 31, 2031. Last 12 months: over a limit 3 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 25.5 mg/L | ≤ 25 mg/L | 2% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 120 mg/L | ≤ 25 mg/L | 380% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], maximum weekly average | 120 mg/L | ≤ 40 mg/L | 200% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Streamflow | monthly average | report only (MGD) | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 70 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 105 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (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 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| 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 |
| Dilution factor | maximum | ≤ .1 Ratio | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], daily maximum | 10 mg/L (May–Nov) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 11 mg/L (Jan, Feb, Mar, Apr, Dec) | new | — | — |
| Nitrogen, ammonia total [as N], monthly average | 5 mg/L (May–Nov) | new | — | — |
| Nitrogen, ammonia total [as N], monthly average | 5.3 mg/L (Jan, Feb, Mar, Apr, Dec) | new | — | — |
Cited limits by parameter: Indiana's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IN0058611 · MCP: https://passage-data.com/mcp