Water quality for ZIP code 78728
ZIP 78728 covers Austin, Wells Branch, and Round Rock 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 |
|---|---|---|---|---|
| Wells Branch MUD 1 |
18,015 | 0 | 1.1 mi | |
| Marsha WSC |
480 | 2 | 1.3 mi | |
| Windermere Community |
21,231 | 0 | 2.7 mi | |
| Northtown MUD |
11,520 | 1 | 3.5 mi | |
| North Austin MUD 1 |
11,133 | 0 | 4.0 mi | |
| City of Pflugerville |
63,464 | 3 | 5.6 mi | |
| Lakeside Wcid 1 |
1,680 | 0 | 7.2 mi | |
| Lakeside Wcid 2-B |
1,419 | 0 | 7.5 mi | |
| Kelly Lane Wcid 1 |
2,331 | 0 | 7.6 mi | |
| Lakeside MUD 3 |
2,832 | 0 | 7.8 mi | |
| Kelly Lane Wcid 2 |
1,221 | 0 | 8.0 mi | |
| Lakeside Wcid 2-C |
3,084 | 0 | 8.0 mi | |
| Lakeside Wcid 2d |
2,385 | 2 | 8.3 mi | |
| Lakeside Wcid 2-A |
1,353 | 0 | 8.7 mi | |
| Loop 360 WSC |
1,743 | 1 | 10.5 mi | |
| Rivercrest WS |
1,437 | 2 | 10.7 mi | |
| Travis County MUD 2 |
3,294 | 0 | 10.9 mi | |
| Wilbarger Creek MUD 1 |
3,459 | 1 | 11.0 mi | |
| Oak Shores Water System |
696 | 2 | 11.2 mi | |
| ST Stephens Episcopal School |
700 | 2 | 11.4 mi | |
| City of Manor |
19,620 | 2 | 11.8 mi | |
| Indian Springs Subdivision |
159 | 3 | 11.9 mi | |
| Sail Haven |
129 | 5 | 12.2 mi | |
| Cottonwood Creek MUD 1 |
5,082 | 1 | 12.2 mi | |
| Wood Island Homeowners Association Water |
42 | 1 | 12.2 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.