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Sewage treatment plant, Houston, Texas. NPDES permit TX0076651, in force until Jul 8, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 4 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 | single grab sample | ≤ 60 mg/L | all year |
| Solids, total suspended | daily average | ≤ 50 lb/d | all year |
| Nitrogen, ammonia total [as N] | daily average | ≤ 3 mg/L | all year |
| Nitrogen, ammonia total [as N] | single grab sample | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily average | ≤ 10 lb/d | all year |
| Flow, in conduit or thru treatment plant | daily average | ≤ .4 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (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 | ≤ 63 CFU/100mL | all year |
| E. coli | single grab sample | ≤ 200 CFU/100mL | all year |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | single grab sample | ≤ 35 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 33 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/TX0076651 · MCP: https://passage-data.com/mcp