Water quality in Katy, Texas
Katy is in Fort Bend County. 294 active public water systems serve the county; 119 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Fort Bend County
179 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Fort Bend County MUD 151 |
10,233 | 0 | 2.7 mi | |
| Fort Bend County MUD 130 |
3,150 | 0 | 2.7 mi | |
| Fort Bend County MUD 37 |
1,662 | 0 | 2.8 mi | |
| Lake Pointe Estates |
285 | 2 | 3.2 mi | |
| Harris Fort Bend Counties MUD 1 |
3,812 | 0 | 3.5 mi | |
| Fort Bend County MUD 58 |
10,629 | 0 | 3.6 mi | |
| Harris Fort Bend Counties MUD 5 |
4,641 | 0 | 4.1 mi | |
| Fort Bend County MUD 182 |
10,498 | 0 | 4.1 mi | |
| Fulshear MUD 3a |
5,421 | 0 | 4.2 mi | |
| Fort Bend County MUD 156 |
1,719 | 0 | 4.4 mi | |
| Fort Bend County MUD 124 |
2,544 | 0 | 4.4 mi | |
| Fort Bend County MUD 57 |
5,335 | 0 | 4.5 mi | |
| Fort Bend County MUD 185 |
3,663 | 2 | 4.5 mi | |
| Cinco MUD 9 |
3,828 | 0 | 4.9 mi | |
| Cinco MUD 1 |
945 | 0 | 5.0 mi | |
| Cinco MUD 10 |
2,583 | 0 | 5.0 mi | |
| Cinco MUD 14 |
6,192 | 0 | 5.1 mi | |
| Cinco Southwest MUD 3 Daycare |
5,187 | 0 | 5.4 mi | |
| Cinco Southwest MUD 4 |
6,093 | 0 | 5.5 mi | |
| Cinco MUD 12 |
2,274 | 0 | 5.5 mi | |
| Cinco Southwest MUD 1 |
513 | 0 | 5.6 mi | |
| Fort Bend County MUD 35 |
6,297 | 0 | 5.7 mi | |
| Cinco MUD 2 |
4,743 | 0 | 6.0 mi | |
| Cinco Southwest MUD 2 |
5,496 | 0 | 6.1 mi | |
| Grand Lakes MUD 2 |
2,076 | 0 | 6.4 mi |
Non-community systems in Fort Bend County (114: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Fort Bend County, nearest to Katy first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Texas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.