Water quality for ZIP code 78681
ZIP 78681 covers Round Rock, Brushy Creek, Austin, and Georgetown 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 |
|---|---|---|---|---|
| Walsh Ranch MUD |
714 | 0 | 0.5 mi | |
| Fern Bluff MUD |
5,682 | 0 | 1.3 mi | |
| Brushy Bend Park |
645 | 0 | 1.4 mi | |
| Brushy Creek MUD |
18,314 | 0 | 1.7 mi | |
| Vista Oaks MUD |
2,724 | 0 | 2.0 mi | |
| City of Round Rock |
130,662 | 0 | 3.0 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 3.9 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 3.9 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 4.9 mi | |
| Round Rock Ranch Pud Utility |
285 | 1 | 5.8 mi | |
| City of Cedar Park |
86,939 | 0 | 5.9 mi | |
| Block House MUD |
6,618 | 0 | 6.1 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 6.5 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 7.1 mi | |
| Williamson Travis County MUD 1 |
5,793 | 1 | 7.9 mi | |
| South San Gabriel Ranches |
510 | 0 | 8.5 mi | |
| Williamson County Wsid 3 |
8,265 | 1 | 8.5 mi | |
| High Gabriel WSC |
492 | 3 | 9.7 mi | |
| Brushy Creek Regional Utility Authority |
0 | 0 | 9.8 mi | |
| City of Leander |
98,330 | 4 | 10.0 mi | |
| City of Hutto |
29,580 | 0 | 10.7 mi | |
| Sunny Creek MHC |
510 | 0 | 14.1 mi | |
| Jonah Water SUD |
29,861 | 1 | 14.2 mi | |
| City of Liberty Hill |
8,777 | 2 | 14.6 mi | |
| San Gabriel River Ranches |
891 | 2 | 16.6 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 |
|---|---|---|---|---|
|
Community Christian Church |
180 | 1 | 0 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
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 | |
|
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, 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.