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Sewerage Systems, Blanchard, Oklahoma. NPDES permit OK0100935, in force until Jul 31, 2030. Last 12 months: no values over a limit, 2 required values missing, 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 4 mg/L | Jan, Feb, Mar, Nov, Dec |
| pH | minimum | ≥ 6.5 SU | Jan, Feb, Mar, Nov, Dec |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 90 mg/L | Jan, Feb, Mar, Nov, Dec |
| Solids, total suspended | weekly average | ≤ 135 mg/L | Jan, Feb, Mar, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 427.84 lb/d | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15.4 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 23.1 mg/L | Jan, Feb, Mar, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 73.21 lb/d | Jan, Feb, Mar, Nov, Dec |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Nov, Dec |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 0 MGD | Apr–Oct |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Nov, Dec |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 0 MGD | Apr–Oct |
| Chlorine, total residual | instantaneous maximum | ≤ .099 mg/L | Jan, Feb, Mar, Nov, Dec |
| E. coli | geometric mean | ≤ 630 MPN/100mL | Jan, Feb, Mar, Nov, Dec |
| E. coli | daily maximum | ≤ 2030 MPN/100mL | Jan, Feb, Mar, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 37.5 mg/L | Jan, Feb, Mar, Nov, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 118.85 lb/d | Jan, Feb, Mar, 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/OK0100935 · MCP: https://passage-data.com/mcp