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Sewage treatment plant, Bokoshe, Oklahoma. NPDES permit OK0027731, in force until Aug 31, 2029. Last 12 months: over a limit 8 times (last May 2026), 6 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 45 mg/L | ≤ 30 mg/L | 50% |
| November 2025 | pH, maximum | 10 SU | ≤ 9 SU | — |
| December 2025 | pH, maximum | 9.19 SU | ≤ 9 SU | — |
| January 2026 | pH, maximum | 9.47 SU | ≤ 9 SU | — |
| February 2026 | pH, maximum | 10.4 SU | ≤ 9 SU | — |
| March 2026 | pH, maximum | 9.98 SU | ≤ 9 SU | — |
| April 2026 | pH, maximum | 10.11 SU | ≤ 9 SU | — |
| May 2026 | pH, maximum | 10.78 SU | ≤ 9 SU | — |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 22.52 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| pH | minimum | ≥ 6.5 SU | Jan, Feb, Mar, Apr, May, Nov, Dec |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 90 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Solids, total suspended | weekly average | ≤ 135 mg/L | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 67.55 lb/d | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 0 MGD | Jun–Oct |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, May, Nov, Dec |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 0 MGD | Jun–Oct |
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/OK0027731 · MCP: https://passage-data.com/mcp