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Dwelling Operators, Except Apartments, Columbia, Missouri. NPDES permit MO0118290 expired Jun 30, 2025; its limits still apply. Last 12 months: no values over a limit, 42 required values missing, 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | weekly average | ≤ 120 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jan, Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Jul, Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Mar, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.1 mg/L | May |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Feb |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Jun |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.8 mg/L | Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | Jul, Aug |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Mar, Dec |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| E. coli | daily maximum | ≤ 5670 #/100mL | Apr–Oct |
| E. coli | 30-day geometric mean | ≤ 1134 #/100mL | Apr–Oct |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 188 Real Estate permits in Missouri.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MO0118290 · MCP: https://passage-data.com/mcp