Water quality in Round Rock, Texas
Round Rock is in Williamson 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 |
|---|---|---|---|---|
| Round Rock Ranch Pud Utility |
285 | 1 | 2.4 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 3.1 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 3.3 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 3.3 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 3.4 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 3.8 mi | |
| Fern Bluff MUD |
5,682 | 0 | 4.3 mi | |
| Walsh Ranch MUD |
714 | 0 | 4.4 mi | |
| Tal Tex |
939 | 0 | 4.5 mi | |
| Brushy Creek MUD |
18,314 | 0 | 4.6 mi | |
| Williamson County Wsid 3 |
8,265 | 1 | 4.6 mi | |
| Brushy Bend Park |
645 | 0 | 5.3 mi | |
| Vista Oaks MUD |
2,724 | 0 | 5.8 mi | |
| Brushy Creek Regional Utility Authority |
0 | 0 | 5.8 mi | |
| City of Hutto |
29,580 | 0 | 6.9 mi | |
| City of Cedar Park |
86,939 | 0 | 9.6 mi | |
| Block House MUD |
6,618 | 0 | 10.1 mi | |
| Williamson Travis County MUD 1 |
5,793 | 1 | 11.1 mi | |
| Jonah Water SUD |
29,861 | 1 | 11.5 mi | |
| South San Gabriel Ranches |
510 | 0 | 12.1 mi | |
| High Gabriel WSC |
492 | 3 | 13.4 mi | |
| Sunny Creek MHC |
510 | 0 | 13.6 mi | |
| City of Leander |
98,330 | 4 | 13.9 mi | |
| City of Taylor |
20,622 | 0 | 14.7 mi | |
| City of Liberty Hill |
8,777 | 2 | 18.1 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 |
|---|---|---|---|---|
|
Community Christian Church |
180 | 1 | 0 | |
|
Live Oak Water Delivery |
25 | 2 | 0 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
Inner Space Cavern |
310 | 0 | 0 | |
|
San Gabriel River RV Camp Resort |
300 | 1 | 0 | |
|
Juniper RV Park |
21 | 2 | 0 | |
|
200 County Road 314 |
37 | 7 | 1 | |
|
Txdps Tactical Training Center |
124 | 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, nearest to Round Rock 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.