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Sewage treatment plant, Wyatt, Indiana. NPDES permit IN0063258, in force until Aug 31, 2030. Last 12 months: over a limit once (last October 2025), 1 of 32 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Solids, total suspended, maximum weekly average | 64.8 mg/L | ≤ 45 mg/L | 44% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 000 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 000 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 000 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 000 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 000 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 9 lb/d | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 13.5 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 12 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 18 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.6 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 5.4 lb/d | all year | 001 |
| Chloride [as Cl] | monthly average | ≤ 690 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 1400 mg/L | all year | 001 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | monthly average | ≤ .006 mL/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | ≤ .012 mL/L | all year | 001 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Copper, total recoverable | monthly average | ≤ .051 mg/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ .1 mg/L | all year | 001 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Phenol | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct | 001 |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct | 001 |
| Chlorine, total residual | daily minimum | ≥ .5 mg/L | Apr–Oct | 001 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 001 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jan, Jul | 001 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jan, Jul | 001 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 001 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.1 tox chronic | Jan, Jul | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.1 tox chronic | Jan, Jul | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.1 tox chronic | Jun, Dec | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 2.1 tox chronic | Jun, Dec | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jan, Jul | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jan, Jul | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 2.1 tox chronic | Jan, Jul | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 2.1 tox chronic | Jan, Jul | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 2.1 tox chronic | Jun, Dec | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 2.1 tox chronic | Jun, Dec | 001 |
| Flow, well water | monthly average | report only (MGD) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7.5 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 12 lb/d | all year | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
Cited limits by parameter: Indiana's rules and the federal ones.
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