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Sewage treatment plant, Gridley, Kansas. NPDES permit KS0045993, in force until Mar 31, 2028. Last 12 months: over a limit 4 times (last June 2026), 2 required values missing, 1 of 6 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 48.7 mg/L | ≤ 30 mg/L | 62% |
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 48.7 mg/L | ≤ 30 mg/L | 62% |
| June 2026 | BOD, 5-day, 20 deg. C, maximum weekly average | 48.7 mg/L | ≤ 45 mg/L | 8% |
| June 2026 | BOD, 5-day, 20 deg. C, maximum weekly average | 48.7 mg/L | ≤ 45 mg/L | 8% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| pH | monthly average | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 120 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15.8 mg/L | Jan–Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10.4 mg/L | Apr–Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.1 mg/L | Jul–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15.8 mg/L | Oct–Dec | 001 |
| E. coli | monthly geometric mean | report only (#/100mL) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
Cited limits by parameter: Kansas'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/KS0045993 · MCP: https://passage-data.com/mcp