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Sewage treatment plant, major discharger, Evansville, Indiana. NPDES permit IN0032956, in force until Jan 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Duration | monthly total | report only (hr/mo) | all year | 006 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 006 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 006 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 006 |
| Duration | monthly total | report only (hr/mo) | all year | 012 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 012 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 012 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 012 |
| Duration | monthly total | report only (hr/mo) | all year | 013 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 013 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 013 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 013 |
| Duration | monthly total | report only (hr/mo) | all year | 014 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 014 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 014 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 014 |
| Duration | monthly total | report only (hr/mo) | all year | 015 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 015 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 015 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 015 |
| Duration | monthly total | report only (hr/mo) | all year | 016 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 016 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 016 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 016 |
| Duration | monthly total | report only (hr/mo) | all year | 017 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 017 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 017 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 017 |
| Duration | monthly total | report only (hr/mo) | all year | 018 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 018 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 018 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 018 |
| Duration | monthly total | report only (hr/mo) | all year | 020 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 020 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 020 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 020 |
| Duration | monthly total | report only (hr/mo) | all year | 022 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 022 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 022 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 022 |
| pH | daily minimum | ≥ 6 SU | all year | 023 |
| pH | daily maximum | ≤ 9 SU | all year | 023 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 023 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 023 |
| Solids, total suspended | monthly average | ≤ 11266 lb/d | all year | 023 |
| Solids, total suspended | maximum weekly average | ≤ 16899 lb/d | all year | 023 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 023 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | May–Nov | 023 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.3 mg/L | Jan, Feb, Mar, Apr, Dec | 023 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 4.2 mg/L | May–Nov | 023 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 14 mg/L | Jan, Feb, Mar, Apr, Dec | 023 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1051 lb/d | May–Nov | 023 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3492 lb/d | Jan, Feb, Mar, Apr, Dec | 023 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1577 lb/d | May–Nov | 023 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 5257 lb/d | Jan, Feb, Mar, Apr, Dec | 023 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 023 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 023 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 023 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 023 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 023 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 023 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 023 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 023 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 023 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Jan, Jul | 023 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Jan, Jul | 023 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Jun, Dec | 023 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Jun, Dec | 023 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Jun, Dec | 023 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Jun, Dec | 023 |
| Coliform, fecal general | monthly geometric mean | ≤ 2000 #/100mL | Jan, Feb, Mar, Nov, Dec | 023 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | all year | 023 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 30 mg/L | all year | 023 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7511 lb/d | all year | 023 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 11266 lb/d | all year | 023 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 023 |
| TU Static 48Hr Acute Daphnia magna | maximum | ≤ 1 tox acute (alert, not enforceable) | Jan, Jul | 023 |
| TU Static 48Hr Acute Daphnia magna | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| TU Static 48Hr Acute Daphnia magna | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug | 023 |
| Duration | monthly total | report only (hr/mo) | all year | 024 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 024 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 024 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 024 |
| Duration | monthly total | report only (hr/mo) | all year | 025 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 025 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 025 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 025 |
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/IN0032956 · MCP: https://passage-data.com/mcp