Water quality for ZIP code 78642
ZIP 78642 covers Liberty Hill and Santa Rita Ranch in Williamson County, Texas, one of 19 ZIP codes in the county. 52 active public water systems serve the county; 34 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 Williamson County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Liberty Hill |
8,777 | 2 | 2.2 mi | |
| San Gabriel River Ranches |
891 | 2 | 2.7 mi | |
| Durham Park WSC |
1,251 | 2 | 3.7 mi | |
| Liberty Greenline |
46 | 1 | 4.1 mi | |
| High Gabriel WSC |
492 | 3 | 7.1 mi | |
| City of Leander |
98,330 | 4 | 8.0 mi | |
| South San Gabriel Ranches |
510 | 0 | 8.3 mi | |
| Block House MUD |
6,618 | 0 | 11.9 mi | |
| City of Florence |
1,136 | 5 | 13.7 mi | |
| City of Cedar Park |
86,939 | 0 | 14.3 mi | |
| Vista Oaks MUD |
2,724 | 0 | 14.8 mi | |
| Brushy Bend Park |
645 | 0 | 15.9 mi | |
| Walsh Ranch MUD |
714 | 0 | 16.3 mi | |
| Tal Tex |
939 | 0 | 16.6 mi | |
| Williamson Travis County MUD 1 |
5,793 | 1 | 16.7 mi | |
| Fern Bluff MUD |
5,682 | 0 | 17.3 mi | |
| Brushy Creek MUD |
18,314 | 0 | 17.5 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 18.0 mi | |
| Sunny Creek MHC |
510 | 0 | 18.3 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 18.5 mi | |
| City of Round Rock |
130,662 | 0 | 19.3 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 20.5 mi | |
| City of Jarrell |
3,450 | 2 | 20.9 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 21.2 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 21.5 mi |
Non-community systems in Williamson County (12: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Juniper RV Park |
21 | 2 | 0 | |
|
Smilin V Ranch |
256 | 1 | 0 | |
|
Txdps Tactical Training Center |
124 | 2 | 0 | |
|
Community Christian Church |
180 | 1 | 0 | |
|
Inner Space Cavern |
310 | 0 | 0 | |
|
Live Oak Water Delivery |
25 | 2 | 0 | |
|
San Gabriel River RV Camp Resort |
300 | 1 | 0 | |
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
200 County Road 314 |
37 | 7 | 1 | |
|
Premier Athletic Complex |
25 | 2 | 0 | |
|
Simple Water Solutions |
25 | 1 | 0 |
About this data
Water systems are matched to Williamson 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.