Harris County Mud 465 WWTP
5050' W Of Intx Of Katy Hockley Rd & Longenbaugh, Katy, TX 77493 · Harris County · Publicly Owned Treatment Works
- Average flow
- 0.23 MGD
- Design flow
- 0.3 MGD
- NPDES permit
- TX0139106
- Effective
- Permit expires
- September 2029
- Population served
- —
- CWNS 2022
Harris County Mud 465 WWTP is a publicly owned wastewater treatment works in Katy, Harris County, Texas treating an average of 0.23 million gallons per day against a permitted design capacity of 0.3 MGD. It discharges under NPDES permit TX0139106 (effective), which expires in September 2029, with 13 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Harris County Mud 465 WWTP.
Available with a free Klarifi account
See the full treatment train at Harris County Mud 465 WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Harris County Mud 465 WWTP.
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Nearby wastewater treatment plants in Texas
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0.31 MGD
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0.62 MGD
Cypress · 7 mi away
0.33 MGD
Katy · 7 mi away
1.86 MGD
Katy · 7 mi away
3.14 MGD
Katy · 8 mi away
1.12 MGD
Houston · 8 mi away
1.28 MGD
Harris County Mud 465 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 April 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms