Grand Mission Mud 1 WWTP
0.9Mi S & 0.5Mi W Of Fm 1093 And Harlem Rd, Houston, TX 77002 · Fort Bend County · Publicly Owned Treatment Works
- Average flow
- 1.53 MGD
- Design flow
- 2.11 MGD
- NPDES permit
- TX0123749
- Effective
- Permit expires
- May 2030
- Population served
- —
- CWNS 2022
Grand Mission Mud 1 WWTP is a publicly owned wastewater treatment works in Houston, Fort Bend County, Texas treating an average of 1.53 million gallons per day against a permitted design capacity of 2.11 MGD. It discharges under NPDES permit TX0123749 (effective), which expires in May 2030, with 4 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Grand Mission Mud 1 WWTP.
Available with a free Klarifi account
See the full treatment train at Grand Mission Mud 1 WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Houston
Houston's capital improvement plan lists 22 water, sewer and wastewater line items worth $1.3B starting 2025–2025. The largest budgeted items are shown here.
All water and sewer capital projects in Houston →
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Plant Improvements | $353,943,200 | 2025–2025 |
| Wastewater Treatment Plant Consolidation | $166,807,000 | 2025–2025 |
| Surface Water Transmission Program | $132,740,144 | 2025–2025 |
| Neighborhood Sewer Rehab Program | $96,000,000 | 2025–2025 |
| Pump Station Program | $87,851,600 | 2025–2025 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Grand Mission Mud 1 WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Texas
Bellaire · 2 mi away
0.59 MGD
Katy · 2 mi away
0.79 MGD
Katy · 2 mi away
0.39 MGD
Houston · 2 mi away
1.04 MGD
Richmond · 2 mi away
1.68 MGD
Richmond · 2 mi away
0.63 MGD
Richmond · 2 mi away
0.62 MGD
Houston · 3 mi away
1.56 MGD
Grand Mission Mud 1 WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated May 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms