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Sewage treatment plant, Cordell, Oklahoma. NPDES permit OK0032379, in force until Feb 28, 2031. Last 12 months: over a limit 5 times (last June 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | pH, maximum | 9.1 SU | ≤ 9 SU | — |
| December 2025 | E. coli, daily maximum | 6500 MPN/100mL | ≤ 2030 MPN/100mL | 220% |
| December 2025 | E. coli, geometric mean | 2292 MPN/100mL | ≤ 630 MPN/100mL | 264% |
| June 2026 | E. coli, daily maximum | 800 MPN/100mL | ≤ 406 MPN/100mL | 97% |
| June 2026 | E. coli, geometric mean | 284 MPN/100mL | ≤ 126 MPN/100mL | 125% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | Apr, May |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 101.6 lb/d | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 135 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 304.7 lb/d | all year |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| E. coli | geometric mean | ≤ 126 MPN/100mL | May–Sep |
| E. coli | geometric mean | ≤ 630 MPN/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| E. coli | daily maximum | ≤ 406 MPN/100mL | May–Sep |
| E. coli | daily maximum | ≤ 2030 MPN/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year |
Cited limits by parameter: Oklahoma's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OK0032379 · MCP: https://passage-data.com/mcp