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Electric Services, major discharger, Edwardsport, Indiana. NPDES permit IN0002780, in force until Jul 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Apr, Nov | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Mar | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jan, Feb | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | May | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jun–Sep | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Oct | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Dec | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 73 deg F | Apr, Nov | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 63 deg F | Mar | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 53 deg F | Jan, Feb | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 83 deg F | May | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 93 deg F | Jun–Sep | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 81 deg F | Oct | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 60 deg F | Dec | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Dec | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jun–Sep | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jan, Feb | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Mar | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Apr, Nov | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Oct | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | May | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 60 deg F | Dec | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 93 deg F | Jun–Sep | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 53 deg F | Jan, Feb | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 63 deg F | Mar | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 73 deg F | Apr, Nov | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 81 deg F | Oct | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 83 deg F | May | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 29.1 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 96.3 mg/L | all year | 002 |
| Oil and grease, hexane extr method | monthly average | ≤ 10.7 mg/L | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | ≤ 14.3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Cyanide, free [as free] | monthly average | report only (mg/L) | all year | 002 |
| Cyanide, free [as free] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total recoverable | monthly average | ≤ 1 mg/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 1 mg/L | all year | 002 |
| Selenium, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Selenium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | monthly average | ≤ .25 mg/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ .51 mg/L | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total recoverable | monthly average | ≤ .2 mg/L | all year | 002 |
| Chromium, total recoverable | daily maximum | ≤ .2 mg/L | all year | 002 |
| Copper, total recoverable | monthly average | ≤ .042 mg/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ .084 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | < .06 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 002 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Jul | 002 |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Aug | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 16 tox chronic (alert, not enforceable) | Jul | 002 |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 16 tox chronic (alert, not enforceable) | Aug | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Jul | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Aug | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 16 tox chronic (alert, not enforceable) | Jul | 002 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 16 tox chronic (alert, not enforceable) | Aug | 002 |
| Mercury, total recoverable | monthly average | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Apr, Jun, Aug, Oct, Dec | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 003 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 003 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 003 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 003 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 003 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 004 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 004 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 004 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 004 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 004 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 005 |
| pH | quarterly maximum | report only (SU) | Mar, Jun, Sep, Dec | 005 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Solids, total suspended | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Oil and grease, hexane extr method | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Nitrogen, Kjeldahl, total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Nitrite + Nitrate total [as N] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Phosphorus, total [as P] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| BOD, carbonaceous [5 day, 20 C] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Chemical Oxygen Demand [COD] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 005 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 005 |
| Storm water flow | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec | 005 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 201 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 201 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 201 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 50 mg/L | all year | 201 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 401 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 401 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 401 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 401 |
| TU Static 48Hr Acute Daphnia pulex | maximum | ≤ 1 tox acute | Jan, Jul | 401 |
| TU Static 48Hr Acute Daphnia pulex | maximum | ≤ 1 tox acute | Feb, Aug | 401 |
| Toxic Units Static Renewal 48Hr Acute Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Jan, Jul | 401 |
| Toxic Units Static Renewal 48Hr Acute Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Feb, Aug | 401 |
| TU Static Renewal 48Hr Acute Daphnia magna | maximum | ≤ 1 tox acute | Jan, Jul | 401 |
| TU Static Renewal 48Hr Acute Daphnia magna | maximum | ≤ 1 tox acute | Feb, Aug | 401 |
| TU Static Renewal 96Hr Acute Pimphales promelas | maximum | ≤ 1 tox acute | Jan, Jul | 401 |
| TU Static Renewal 96Hr Acute Pimphales promelas | maximum | ≤ 1 tox acute | Feb, Aug | 401 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 501 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 501 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 501 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 501 |
| Arsenic, total recoverable | daily maximum | ≤ .004 mg/L | all year | 501 |
| Selenium, total recoverable | monthly average | ≤ .227 mg/L | all year | 501 |
| Selenium, total recoverable | daily maximum | ≤ .453 mg/L | all year | 501 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 501 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 501 |
| Solids, total dissolved | monthly average | ≤ 38 mg/L | all year | 501 |
| Solids, total dissolved | daily maximum | ≤ 82 mg/L | all year | 501 |
| Mercury, total recoverable | monthly average | ≤ 11 ng/L | all year | 501 |
| Mercury, total recoverable | daily maximum | ≤ 28 ng/L | all year | 501 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 30 Electric Services permits in Indiana.
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