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Sewage treatment plant, Cardwell, Missouri. NPDES permit MO0055824 expired Mar 31, 2024; its limits still apply. Last 12 months: over a limit 7 times (last December 2025), 30 required values missing, 1 of 3 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | BOD, 5-day, 20 deg. C, monthly average | 71.2 | ≤ 30 mg/L | 137% |
| December 2025 | BOD, 5-day, 20 deg. C, weekly average | 71.2 | ≤ 45 mg/L | 58% |
| December 2025 | BOD, 5-day, percent removal, monthly average minimum | 82.5 | ≥ 85 % | 17% |
| December 2025 | E. coli, 30-day geometric mean | 2420 | ≤ 206 #/100mL | 1075% |
| December 2025 | E. coli, 7-day geometric mean | 2420 | ≤ 1030 #/100mL | 135% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 16.1 | ≤ 11.3 mg/L | 42% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 16.1 | ≤ 2.2 mg/L | 632% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.3 mg/L | Jan, Feb, Mar, Oct, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Apr–Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.2 mg/L | Jan, Feb, Mar, Oct, Nov, 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 | 7-day geometric mean | ≤ 1030 #/100mL | Apr–Dec |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Dec |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year |
Cited limits by parameter: Missouri'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/MO0055824 · MCP: https://passage-data.com/mcp