Water quality for ZIP code 78729
ZIP 78729 covers Austin 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 |
|---|---|---|---|---|
| Brushy Creek MUD |
18,314 | 0 | 3.8 mi | |
| Fern Bluff MUD |
5,682 | 0 | 4.3 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 4.3 mi | |
| Williamson Travis County MUD 1 |
5,793 | 1 | 4.7 mi | |
| Brushy Bend Park |
645 | 0 | 4.9 mi | |
| Tal Tex |
939 | 0 | 5.0 mi | |
| Walsh Ranch MUD |
714 | 0 | 5.5 mi | |
| Vista Oaks MUD |
2,724 | 0 | 6.3 mi | |
| City of Round Rock |
130,662 | 0 | 6.9 mi | |
| Round Rock Ranch Pud Utility |
285 | 1 | 7.4 mi | |
| Block House MUD |
6,618 | 0 | 7.6 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 9.0 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 9.9 mi | |
| Williamson County Wsid 3 |
8,265 | 1 | 10.6 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 10.6 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 11.2 mi | |
| South San Gabriel Ranches |
510 | 0 | 11.5 mi | |
| City of Leander |
98,330 | 4 | 11.7 mi | |
| Brushy Creek Regional Utility Authority |
0 | 0 | 12.2 mi | |
| High Gabriel WSC |
492 | 3 | 12.5 mi | |
| City of Hutto |
29,580 | 0 | 13.5 mi | |
| City of Liberty Hill |
8,777 | 2 | 17.3 mi | |
| Jonah Water SUD |
29,861 | 1 | 18.8 mi | |
| Liberty Greenline |
46 | 1 | 19.4 mi | |
| Sunny Creek MHC |
510 | 0 | 19.6 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 |
|---|---|---|---|---|
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
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 | |
|
Juniper RV Park |
21 | 2 | 0 | |
|
Smilin V Ranch |
256 | 1 | 0 | |
|
Txdps Tactical Training Center |
124 | 2 | 0 | |
|
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.