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Sewage treatment plant, major discharger, Kokomo, Indiana. NPDES permit IN0032875, in force until Nov 30, 2026. Last 12 months: over a limit 4 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | E. coli, colony forming units [CFU], daily maximum | 388 CFU/100mL | ≤ 235 CFU/100mL | 65% |
| June 2026 | E. coli, colony forming units [CFU], monthly average | 260 CFU/100mL | ≤ 125 CFU/100mL | 108% |
| August 2026 | E. coli, colony forming units [CFU], daily maximum | > 2420 CFU/100mL | ≤ 235 CFU/100mL | — |
| August 2026 | E. coli, colony forming units [CFU], monthly average | 634 CFU/100mL | ≤ 125 CFU/100mL | 407% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Duration | monthly total | report only (hr/mo) | all year | 001 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 001 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 001 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 001 |
| Duration | monthly total | report only (hr/mo) | all year | 002 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 002 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 002 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 002 |
| 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 | 009 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 009 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 009 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 009 |
| 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 | 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 | 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 | 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 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov | 025 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| pH | daily minimum | ≥ 6 SU | all year | 025 |
| pH | daily maximum | ≤ 9 SU | all year | 025 |
| Solids, total suspended | monthly average | ≤ 24 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| Solids, total suspended | monthly average | ≤ 12 mg/L | May–Nov | 025 |
| Solids, total suspended | maximum weekly average | ≤ 36 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| Solids, total suspended | maximum weekly average | ≤ 18 mg/L | May–Nov | 025 |
| Solids, total suspended | monthly average | ≤ 8011 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| Solids, total suspended | monthly average | ≤ 4006 lb/d | May–Nov | 025 |
| Solids, total suspended | maximum weekly average | ≤ 12017 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| Solids, total suspended | maximum weekly average | ≤ 6008 lb/d | May–Nov | 025 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 025 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 025 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | May–Nov | 025 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.3 mg/L | May–Nov | 025 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 3.6 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 501 lb/d | May–Nov | 025 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 801 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 768 lb/d | May–Nov | 025 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1202 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 025 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 025 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Nickel, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Nickel, total recoverable | monthly average | ≤ .1 mg/L | all year | 025 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Nickel, total recoverable | daily maximum | ≤ .25 mg/L | all year | 025 |
| Nickel, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Cadmium, total recoverable | monthly average | ≤ .0022 mg/L | all year | 025 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Cadmium, total recoverable | daily maximum | ≤ .0043 mg/L | all year | 025 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Lead, total recoverable | monthly average | ≤ .01 mg/L | all year | 025 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Lead, total recoverable | daily maximum | ≤ .02 mg/L | all year | 025 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Chromium, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Copper, total recoverable | monthly average | ≤ .024 mg/L | all year | 025 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Copper, total recoverable | daily maximum | ≤ .049 mg/L | all year | 025 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 025 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 025 |
| Molybdenum, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Molybdenum, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Molybdenum, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Molybdenum, total recoverable | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 025 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 025 |
| Chlorine, total residual | monthly average | ≤ .06 mg/L | Apr–Oct | 025 |
| Chlorine, total residual | daily maximum | ≤ .06 mg/L | Apr–Oct | 025 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 025 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 025 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | May, Nov | 025 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 025 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jun, Dec | 025 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic | May, Nov | 025 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic | Jun, Dec | 025 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic | Jun, Dec | 025 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | May, Nov | 025 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 025 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Jun, Dec | 025 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic | May, Nov | 025 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic | Jun, Dec | 025 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic | Jun, Dec | 025 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | May–Nov | 025 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec | 025 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15 mg/L | May–Nov | 025 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6676 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 3338 lb/d | May–Nov | 025 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 10014 lb/d | Jan, Feb, Mar, Apr, Dec | 025 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 5007 lb/d | May–Nov | 025 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 025 |
| pH | daily minimum | report only (SU) | all year | 027 |
| pH | daily maximum | report only (SU) | all year | 027 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 027 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 027 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 027 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 027 |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct | 027 |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct | 027 |
| E. coli, colony forming units [CFU] | monthly average | ≤ 125 CFU/100mL | Apr–Oct | 027 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 027 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 027 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 027 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 027 |
| Duration | monthly total | report only (hr/mo) | all year | 041 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 041 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 041 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 041 |
| Duration | monthly total | report only (hr/mo) | all year | 049 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 049 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 049 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 049 |
| Duration | monthly total | report only (hr/mo) | all year | 050 |
| Overflow volume [SS0 volume, CSO volume] | monthly total | report only (Mgal) | all year | 050 |
| Precipitation, monthly accumulation | monthly total | report only (in/mo) | all year | 050 |
| Discharge event observation [Visual Monitoring] | monthly total | report only (#/mo) | all year | 050 |
| pH | daily minimum | report only (SU) | all year | 051 |
| pH | daily maximum | report only (SU) | all year | 051 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 051 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 051 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 051 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 051 |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct | 051 |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct | 051 |
| E. coli, colony forming units [CFU] | monthly average | ≤ 125 CFU/100mL | Apr–Oct | 051 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 051 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 051 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 051 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 051 |
Cited limits by parameter: Indiana's rules and the federal ones.
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