Water quality for ZIP code 76578
ZIP 76578 covers Thrall and Thorndale 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
Other community water systems in Williamson County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Brazos River Authority Granger Lake Regi |
0 | 0 | 10.6 mi | |
| City of Taylor |
20,622 | 0 | 11.2 mi | |
| City of Granger |
1,914 | 5 | 17.5 mi | |
| City of Hutto |
29,580 | 0 | 18.3 mi | |
| Jonah Water SUD |
29,861 | 1 | 18.8 mi | |
| Brushy Creek Regional Utility Authority |
0 | 0 | 19.4 mi | |
| Williamson County Wsid 3 |
8,265 | 1 | 20.9 mi | |
| City of Bartlett |
2,950 | 7 | 21.4 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 22.3 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 22.8 mi | |
| Round Rock Ranch Pud Utility |
285 | 1 | 24.0 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 25.3 mi | |
| City of Round Rock |
130,662 | 0 | 26.1 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 26.1 mi | |
| Jarrell Schwertner WSC |
9,681 | 0 | 26.8 mi | |
| Sunny Creek MHC |
510 | 0 | 27.0 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 27.2 mi | |
| Sonterra MUD |
16,614 | 3 | 28.6 mi | |
| Fern Bluff MUD |
5,682 | 0 | 29.5 mi | |
| Walsh Ranch MUD |
714 | 0 | 29.5 mi | |
| City of Jarrell |
3,450 | 2 | 29.6 mi | |
| Tal Tex |
939 | 0 | 29.7 mi | |
| Brushy Creek MUD |
18,314 | 0 | 29.7 mi | |
| Brushy Bend Park |
645 | 0 | 30.5 mi | |
| Vista Oaks MUD |
2,724 | 0 | 30.8 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 |
|---|---|---|---|---|
|
San Gabriel River RV Camp Resort |
300 | 1 | 0 | |
|
Live Oak Water Delivery |
25 | 2 | 0 | |
|
Inner Space Cavern |
310 | 0 | 0 | |
|
200 County Road 314 |
37 | 7 | 1 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
Community Christian Church |
180 | 1 | 0 | |
|
Txdps Tactical Training Center |
124 | 2 | 0 | |
|
Juniper RV Park |
21 | 2 | 0 | |
|
Smilin V Ranch |
256 | 1 | 0 | |
|
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.