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Sewage treatment plant, major discharger, Crown Point, Indiana. NPDES permit IN0058343, in force until Dec 31, 2030. Last 12 months: over a limit 2 times (last August 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 4.73 mg/L | ≤ 2.9 mg/L | 63% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 1.216 mg/L | ≤ 1.2 mg/L | 1% |
| 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 | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | monthly average | ≤ 12 mg/L | May–Nov |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | maximum weekly average | ≤ 18 mg/L | May–Nov |
| Solids, total suspended | monthly average | ≤ 400 lb/d | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | monthly average | ≤ 160 lb/d | May–Nov |
| Solids, total suspended | maximum weekly average | ≤ 600 lb/d | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | maximum weekly average | ≤ 240 lb/d | May–Nov |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.9 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.1 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 16 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 16 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 39 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 41 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 |
| 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 |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec |
| Mercury, total recoverable | daily maximum | report only (lb/d) | Feb, Apr, Jun, Aug, Oct, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15 mg/L | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 330 lb/d | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 130 lb/d | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 530 lb/d | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 200 lb/d | May–Nov |
| Phosphorus, total percent removal | monthly average minimum | ≥ 75 % | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Toxicity [acute], Ceriodaphnia dubia, maximum | 1 tox acute (Jun) | new | — | — |
| Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum | 1 tox acute (Jun) | new | — | — |
| Toxicity [chronic], Ceriodaphnia dubia, maximum | 1 tox chronic (Jun) | new | — | — |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow], maximum | 1 tox chronic (Jun) | 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/IN0058343 · MCP: https://passage-data.com/mcp