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Sewage treatment plant, Union City, Oklahoma. NPDES permit OK0038393, in force until Jul 31, 2031. Last 12 months: over a limit 5 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Solids, total suspended, monthly average | 208.4 lb/d | ≤ 150.1 lb/d | 39% |
| March 2026 | Solids, total suspended, monthly average | 117 mg/L | ≤ 90 mg/L | 30% |
| March 2026 | Solids, total suspended, weekly average | 138 mg/L | ≤ 135 mg/L | 2% |
| April 2026 | Solids, total suspended, monthly average | 129.5 mg/L | ≤ 90 mg/L | 44% |
| April 2026 | pH, maximum | 9.07 SU | ≤ 9 SU | — |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 50 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| pH | minimum | ≥ 6.5 SU | Jan, Feb, Mar, Apr, Nov, Dec |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 90 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | weekly average | ≤ 135 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 150 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 0 MGD | May–Oct |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 0 MGD | May–Oct |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec |
| E. coli | geometric mean | ≤ 630 MPN/100mL | Jan, Feb, Mar, Apr, Nov, Dec |
| E. coli | daily maximum | ≤ 2030 MPN/100mL | Jan, Feb, Mar, Apr, Nov, Dec |
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/OK0038393 · MCP: https://passage-data.com/mcp