25839 Katy Freeway, Katy, TX 77494 · Fort Bend County · Publicly Owned Treatment Works
City Of Katy Waste Water Treatment Plant is a publicly owned wastewater treatment works in Katy, Fort Bend County, Texas treating an average of 4.66 million gallons per day against a permitted design capacity of 3.9 MGD, serving about 12,084 residents. It discharges under NPDES permit TX0025747 (effective), which expires in June 2027, with 3 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in June 2009.
One treatment structure or unit process identified at City Of Katy Waste Water Treatment Plant.
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See the full treatment train at City Of Katy Waste Water Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for City Of Katy Waste Water Treatment Plant in EPA's ICIS system.
Latest case · Jun 2009
Katy City of Wastewater Treatment Plant
Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $780 · Compliance actions $780
EPA's description of the case:
“Failed to comply with the regulation of the Risk Management Plan.”
Source: EPA ECHO, civil enforcement case 06-2009-3590.
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Every action against City Of Katy Waste Water Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
2 verified contacts for City Of Katy Waste Water Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at City Of Katy Waste Water Treatment Plant, plus the full compliance history and discharge data.
Katy · 2 mi away
0.21 MGD
Houston · 2 mi away
0.65 MGD
Katy · 2 mi away
1.32 MGD
Katy · 3 mi away
0.26 MGD
Katy · 3 mi away
0.73 MGD
Katy · 3 mi away
0.34 MGD
Houston · 4 mi away
0.46 MGD
Katy · 4 mi away
3.14 MGD
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 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms