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Electric Services, major discharger, Chouteau, Oklahoma. NPDES permit OK0035149, in force until Sep 30, 2030. Last 12 months: over a limit 11 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 102 | Iron, total [as Fe], daily maximum | 1.29 mg/L | ≤ 1 mg/L | 29% |
| October 2025 | 102 | Iron, total [as Fe], monthly average | 1.29 mg/L | ≤ 1 mg/L | 29% |
| February 2026 | 102 | Iron, total [as Fe], daily maximum | 1.49 mg/L | ≤ 1 mg/L | 49% |
| February 2026 | 102 | Iron, total [as Fe], monthly average | 1.49 mg/L | ≤ 1 mg/L | 49% |
| February 2026 | 102 | Solids, total suspended, monthly average | 33 mg/L | ≤ 30 mg/L | 10% |
| March 2026 | 001 | pH, minimum | 6.21 SU | ≥ 6.5 SU | — |
| May 2026 | 001 | pH, maximum | 9.54 SU | ≤ 9 SU | — |
| June 2026 | 001 | pH, maximum | 9.18 SU | ≤ 9 SU | — |
| June 2026 | 102 | Copper, total [as Cu], daily maximum | < 4.8 mg/L | ≤ 1 mg/L | 380% |
| June 2026 | 102 | Copper, total [as Cu], monthly average | < 4.8 mg/L | ≤ 1 mg/L | 380% |
| July 2026 | 001 | pH, maximum | 9.12 SU | ≤ 9 SU | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 4068 lb/d | all year | 001 |
| Phosphorous, total organic [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorous, total organic [as P] | daily maximum | ≤ 2 mg/L | all year | 001 |
| Phosphorous, total organic [as P] | monthly average | report only (lb/d) | all year | 001 |
| Phosphorous, total organic [as P] | daily maximum | ≤ 181 lb/d | all year | 001 |
| Oxidants, total residual | instantaneous maximum | ≤ .099 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 102 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 102 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 102 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 102 |
| Copper, total [as Cu] | monthly average | ≤ 1 mg/L | all year | 102 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | 102 |
| Iron, total [as Fe] | monthly average | ≤ 1 mg/L | all year | 102 |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | 102 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| Oxidants, free available | monthly average | ≤ .2 mg/L | all year | 104 |
| Oxidants, free available | daily maximum | ≤ .5 mg/L | all year | 104 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 104 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 104 |
| Whole effluent toxicity - retest #1 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 48-hour minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Solids, total dissolved- 180 deg. C | daily minimum | report only (mg/L) | all year | TX1 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | TX1 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | TX1 |
| LC50 Static Renewal 48Hr Acute Daphnia pulex | 48-hour minimum | report only (%) | all year | TX1 |
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (%) | all year | TX1 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex | 48-hour minimum | report only (pass=0;fail=1) | all year | TX1 |
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 48-hour minimum | report only (pass=0;fail=1) | all year | TX1 |
| %Mortality Static Renewal 48Hr Acute Daphnia Pulex | 48-hour minimum | report only (%) | all year | TX1 |
| % Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C | 48-hour minimum | report only (%) | all year | TX1 |
| %Mortality 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 7-day minimum | report only (%) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
Cited limits by parameter: Oklahoma's rules and the federal ones.
Same industry: the 25 Electric Services permits in Oklahoma.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OK0035149 · MCP: https://passage-data.com/mcp