Water quality for ZIP code 78615
ZIP 78615 covers Coupland 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
Other community water systems in Williamson County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Thrall |
975 | 1 | 9.6 mi | |
| City of Hutto |
29,580 | 0 | 10.7 mi | |
| Brushy Creek Regional Utility Authority |
0 | 0 | 11.2 mi | |
| Williamson County Wsid 3 |
8,265 | 1 | 12.4 mi | |
| Jonah Water SUD |
29,861 | 1 | 15.1 mi | |
| Paloma Lake MUD 2 |
2,265 | 1 | 15.1 mi | |
| Round Rock Ranch Pud Utility |
285 | 1 | 15.3 mi | |
| Paloma Lake MUD 1 |
3,111 | 1 | 15.4 mi | |
| City of Granger |
1,914 | 5 | 17.7 mi | |
| City of Round Rock |
130,662 | 0 | 17.9 mi | |
| Williamson County MUD 11 |
4,248 | 1 | 18.1 mi | |
| Blessing Mobile Home Park |
1,518 | 5 | 18.3 mi | |
| Williamson County MUD 10 |
3,513 | 1 | 18.7 mi | |
| Brazos River Authority Granger Lake Regi |
0 | 0 | 20.3 mi | |
| Fern Bluff MUD |
5,682 | 0 | 21.0 mi | |
| Brushy Creek MUD |
18,314 | 0 | 21.1 mi | |
| Walsh Ranch MUD |
714 | 0 | 21.4 mi | |
| Tal Tex |
939 | 0 | 21.4 mi | |
| Brushy Bend Park |
645 | 0 | 22.2 mi | |
| Vista Oaks MUD |
2,724 | 0 | 22.8 mi | |
| City of Bartlett |
2,950 | 7 | 23.0 mi | |
| Sunny Creek MHC |
510 | 0 | 23.2 mi | |
| City of Cedar Park |
86,939 | 0 | 26.2 mi | |
| Williamson Travis County MUD 1 |
5,793 | 1 | 26.7 mi | |
| Sonterra MUD |
16,614 | 3 | 27.0 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 |
|---|---|---|---|---|
|
Live Oak Water Delivery |
25 | 2 | 0 | |
|
San Gabriel River RV Camp Resort |
300 | 1 | 0 | |
|
Inner Space Cavern |
310 | 0 | 0 | |
|
Mesa Rosa Restaurant |
250 | 2 | 1 | |
|
Round Rock Roller Rink |
100 | 1 | 1 | |
|
Community Christian Church |
180 | 1 | 0 | |
|
200 County Road 314 |
37 | 7 | 1 | |
|
Txdps Tactical Training Center |
124 | 2 | 0 | |
|
Juniper RV Park |
21 | 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.