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Sewage treatment plant, Lockwood, Missouri. NPDES permit MO0030473 expired Dec 31, 2023; its limits still apply. Last 12 months: over a limit 4 times (last November 2025), 6 of 31 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 002 | E. coli, daily maximum | 180 | ≤ 126 #/100mL | 43% |
| November 2025 | 001 | BOD, 5-day, 20 deg. C, monthly average | 61.7 | ≤ 45 mg/L | 37% |
| November 2025 | 001 | Solids, suspended percent removal, monthly average minimum | 1.7 | ≥ 65 % | 181% |
| November 2025 | 001 | Solids, total suspended, monthly average | 73.1 | ≤ 70 mg/L | 4% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | weekly average | ≤ 110 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 70 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| Application rate area sprayed | total | report only (acr) | all year | 002 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 002 |
| E. coli | daily maximum | ≤ 126 #/100mL | all year | 002 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 002 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 002 |
| Spray irrigation | total | report only (hr/d) | all year | 002 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 002 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 002 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SM1 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | SM1 |
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/MO0030473 · MCP: https://passage-data.com/mcp