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Sewage treatment plant, Vandalia, Missouri. NPDES permit MO0026361 expired Dec 31, 2025; its limits still apply. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 3.89 | ≤ 2.3 mg/L | 69% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 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 | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 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 | ≤ 12.1 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jan, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.6 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 mg/L | Sep | 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 |
| E. coli | 7-day geometric mean | ≤ 1030 #/100mL | Apr–Oct | 001 |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Oct | 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 |
| 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 |
| Application rate area sprayed | total | report only (acr) | all year | 003 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 003 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 003 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 003 |
| Spray irrigation | total | report only (hr/d) | all year | 003 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 003 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 003 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 003 |
| Application rate area sprayed | total | report only (acr) | all year | 004 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 004 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 004 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 004 |
| Spray irrigation | total | report only (hr/d) | all year | 004 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 004 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 004 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 004 |
| Application rate area sprayed | total | report only (acr) | all year | 005 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 005 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 005 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 005 |
| Spray irrigation | total | report only (hr/d) | all year | 005 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 005 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 005 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 005 |
| Application rate area sprayed | total | report only (acr) | all year | 006 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 006 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 006 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 006 |
| Spray irrigation | total | report only (hr/d) | all year | 006 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 006 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 006 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 006 |
| Application rate area sprayed | total | report only (acr) | all year | 007 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 007 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 007 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 007 |
| Spray irrigation | total | report only (hr/d) | all year | 007 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 007 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 007 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 007 |
| Application rate area sprayed | total | report only (acr) | all year | 008 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 008 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 008 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 008 |
| Spray irrigation | total | report only (hr/d) | all year | 008 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 008 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 008 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 008 |
| Application rate area sprayed | total | report only (acr) | all year | 009 |
| Application rate area sprayed | monthly total | report only (acr) | all year | 009 |
| Application rate, gallons spray irrigation | total | report only (gal) | all year | 009 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | all year | 009 |
| Spray irrigation | total | report only (hr/d) | all year | 009 |
| Spray irrigation | monthly total | report only (hr/d) | all year | 009 |
| Spray irrigation, application rate | total | report only (in/d) | all year | 009 |
| Spray irrigation, application rate | monthly total | report only (in/d) | all year | 009 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| 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 |
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/MO0026361 · MCP: https://passage-data.com/mcp