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Sewerage Systems, Smithton, Missouri. NPDES permit MO0139297 expired Feb 28, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Freeboard | daily maximum | report only (ft) | all year | 001 |
| Application rate area sprayed | daily maximum | report only (acr) | all year | 002 |
| Application rate, rate/area sprayed | daily maximum | report only (gal/acr) | all year | 002 |
| Application rate, gallons spray irrigation | daily maximum | report only (gal) | all year | 002 |
| Spray irrigation | daily maximum | report only (hr/d) | all year | 002 |
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/MO0139297 · MCP: https://passage-data.com/mcp