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Sewage treatment plant, major discharger, Manvel, Texas. NPDES permit TX0118397, in force until Feb 27, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 5 mg/L | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | daily average | ≤ 15 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year |
| Solids, total suspended | daily average | ≤ 63 lb/d | all year |
| Nitrogen, ammonia total [as N] | daily average | ≤ 3 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily average | ≤ 13 lb/d | all year |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | 2-hour peak | ≤ 1389 gal/min | all year |
| Flow, in conduit or thru treatment plant | annual average | ≤ .5 MGD | all year |
| Chlorine, total residual | monthly minimum | ≥ 1 mg/L | all year |
| Chlorine, total residual | monthly maximum | ≤ 4 mg/L | all year |
| E. coli | daily average | ≤ 126 MPN/100mL | all year |
| E. coli | daily maximum | ≤ 399 MPN/100mL | all year |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 42 lb/d | all year |
Cited limits by parameter: Texas'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/TX0118397 · MCP: https://passage-data.com/mcp