Water quality for ZIP code 77493
ZIP 77493 covers Katy and Houston in Harris County, Texas, one of 132 ZIP codes in the county. 1,320 active public water systems serve the county; 683 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Harris County
713 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Harris County MUD 495 |
9,882 | 1 | 1.7 mi | |
| Harris County MUD 538 |
1,710 | 0 | 2.1 mi | |
| Harris County MUD 536 |
8,070 | 0 | 2.8 mi | |
| Harris County MUD 457 |
5,967 | 0 | 3.0 mi | |
| Hunter Place |
606 | 1 | 3.1 mi | |
| Harris County Leadership Academy |
125 | 6 | 3.2 mi | |
| Harris County MUD 449 |
7,179 | 0 | 3.4 mi | |
| Peek Road Mobile Home Park |
63 | 3 | 3.6 mi | |
| Harris County MUD 432 |
4,782 | 0 | 3.8 mi | |
| Peek Road Utilities |
480 | 2 | 4.1 mi | |
| City of Katy |
25,253 | 1 | 4.3 mi | |
| Harris County MUD 65 |
6,330 | 0 | 4.4 mi | |
| Harris County MUD 287 |
6,864 | 0 | 4.5 mi | |
| Harris County MUD 64 |
6,726 | 0 | 4.6 mi | |
| West Harris County MUD 2 Chase |
6,921 | 1 | 4.8 mi | |
| West Harris County MUD 5 |
3,591 | 0 | 4.8 mi | |
| Harris County MUD 71 |
17,079 | 0 | 5.3 mi | |
| Harris County MUD 62 |
3,519 | 1 | 5.5 mi | |
| Harris-Fort Bend Counties MUD 3 |
9,297 | 1 | 5.6 mi | |
| Northwest Harris County MUD 12 |
7,764 | 1 | 5.8 mi | |
| Harris County MUD 105 |
14,925 | 1 | 6.0 mi | |
| Harris County MUD 61 |
2,016 | 0 | 6.1 mi | |
| West Harris County MUD 7 |
5,289 | 1 | 6.4 mi | |
| Cimarron MUD |
19,338 | 0 | 6.5 mi | |
| West Memorial MUD |
4,182 | 0 | 6.7 mi |
Non-community systems in Harris County (606: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Harris County, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.