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Electric Services, major discharger, Joplin, Missouri. NPDES permit MO0126713, in force until Jun 30, 2030. Last 12 months: over a limit 2 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Chlorine, free available, daily maximum | 2200 | ≤ 500 ug/L | 340% |
| December 2025 | Chlorine, free available, monthly average | 594 | ≤ 200 ug/L | 197% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 109.5 deg F | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | ≤ 94.6 deg F | all year | 001 |
| Sulfate [as S] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate [as S] | monthly average | report only (mg/L) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Fluoride | daily maximum | report only (mg/L) | all year | 001 |
| Fluoride | monthly average | report only (mg/L) | all year | 001 |
| Chloride | daily maximum | report only (mg/L) | all year | 001 |
| Chloride | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 17 ug/L | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 8 ug/L | all year | 001 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 001 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Zinc, total recoverable | daily maximum | ≤ 1000 ug/L | all year | CT1 |
| Zinc, total recoverable | monthly average | ≤ 1000 ug/L | all year | CT1 |
| Chromium, total recoverable | daily maximum | ≤ 200 ug/L | all year | CT1 |
| Chromium, total recoverable | monthly average | ≤ 200 ug/L | all year | CT1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | CT1 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | CT1 |
| Chlorine, free available | daily maximum | ≤ 500 ug/L | all year | CT1 |
| Chlorine, free available | monthly average | ≤ 200 ug/L | all year | CT1 |
| pH | daily maximum | ≤ 6.5 SU | all year | L01 |
| pH | maximum | ≤ 9 SU | all year | L01 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | report only (mg/L) | all year | L01 |
| Oil and grease [soxhlet extr.] tot. | monthly average | report only (mg/L) | all year | L01 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | L01 |
| Nitrite + Nitrate total [as N] | monthly average | ≤ 10 mg/L | all year | L01 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | L01 |
| Cadmium, total [as Cd] | monthly average | report only (ug/L) | all year | L01 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | L01 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | L01 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | L01 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | L01 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | L01 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | L01 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | L01 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | L01 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | L01 |
| Nickel, total [as Ni] | monthly average | report only (ug/L) | all year | L01 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | L01 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | L01 |
| Aluminum, total [as Al] | daily maximum | report only (ug/L) | all year | L01 |
| Aluminum, total [as Al] | monthly average | report only (ug/L) | all year | L01 |
| Chloride | daily maximum | report only (ug/L) | all year | L01 |
| Chloride | monthly average | report only (ug/L) | all year | L01 |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 29 Electric Services permits in Missouri.
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