Water quality for ZIP code 78746
ZIP 78746 covers Austin, West Lake Hills, Lost Creek, and Rollingwood in Travis County, Texas, one of 48 ZIP codes in the county. 143 active public water systems serve the county; 79 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 Travis County
88 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Rollingwood |
1,611 | 2 | 2.1 mi | |
| ST Stephens Episcopal School |
700 | 2 | 2.3 mi | |
| Loop 360 WSC |
1,743 | 1 | 2.4 mi | |
| Travis County Wcid 20 |
1,092 | 0 | 2.7 mi | |
| Travis County MUD 4 |
6,816 | 2 | 2.9 mi | |
| Rivercrest WS |
1,437 | 2 | 2.9 mi | |
| Oak Shores Water System |
696 | 2 | 3.1 mi | |
| Travis County Wcid 19 |
597 | 0 | 3.5 mi | |
| Wood Island Homeowners Association Water |
42 | 1 | 3.6 mi | |
| Crystal Mountain Water Supply |
156 | 0 | 3.8 mi | |
| Barton Creek WSC |
633 | 0 | 4.0 mi | |
| City of Austin Water & Wastewater |
1,115,323 | 0 | 4.1 mi | |
| Travis County Wcid 18 |
5,733 | 1 | 4.4 mi | |
| Barton Creek West WSC |
1,251 | 1 | 4.8 mi | |
| City of Sunset Valley |
1,524 | 1 | 4.9 mi | |
| Senna Hills MUD |
1,215 | 0 | 5.5 mi | |
| High Valley WSC |
231 | 2 | 7.2 mi | |
| Travis County Wcid 17 |
45,165 | 0 | 8.9 mi | |
| Shady Hollow MUD |
4,269 | 0 | 9.4 mi | |
| Slaughter Creek Acres |
318 | 2 | 9.8 mi | |
| West Travis County Public Utility Agency |
35,664 | 3 | 10.2 mi | |
| Mooreland Subdivision |
156 | 2 | 10.2 mi | |
| Shady Hollow Estates WSC |
711 | 0 | 10.3 mi | |
| Village of San Leanna |
522 | 1 | 10.6 mi | |
| Forest Oaks Village |
50 | 6 | 10.7 mi |
Non-community systems in Travis County (54: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Travis 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.