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Sewage treatment plant, major discharger, Warsaw, Indiana. NPDES permit IN0060917, in force until May 31, 2027. Last 12 months: over a limit once (last July 2026), 3 required values missing, 1 of 29 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| July 2026 | Phosphorus, total [as P], monthly average | 1.02 mg/L | ≤ 1 mg/L | 2% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov | 002 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Solids, total suspended | monthly average | ≤ 18 mg/L | May–Nov | 002 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Solids, total suspended | maximum weekly average | ≤ 27 mg/L | May–Nov | 002 |
| Solids, total suspended | monthly average | ≤ 1502 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Solids, total suspended | monthly average | ≤ 901 lb/d | May–Nov | 002 |
| Solids, total suspended | maximum weekly average | ≤ 2253 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Solids, total suspended | maximum weekly average | ≤ 1352 lb/d | May–Nov | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2 mg/L | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.9 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 65.1 lb/d | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 95.1 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 100.1 lb/d | May–Nov | 002 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 145.2 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Silver total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 002 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 002 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | May, Nov | 002 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 002 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1.1 tox chronic | May, Nov | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1.1 tox chronic | Jun, Dec | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1.1 tox chronic | Jun, Dec | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | May, Nov | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1.1 tox chronic | May, Nov | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1.1 tox chronic | Jun, Dec | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1.1 tox chronic | Jun, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | May–Nov | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 23 mg/L | May–Nov | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1252 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 751 lb/d | May–Nov | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 2003 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 1152 lb/d | May–Nov | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
| Duration | monthly total | report only (hr/mo) | all year | 003 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 003 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 003 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 003 |
Cited limits by parameter: Indiana's rules and the federal ones.
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