Water quality for ZIP code 78213
ZIP 78213 covers San Antonio, Castle Hills, and Balcones Heights in Bexar County, Texas, one of 70 ZIP codes in the county. 81 active public water systems serve the county; 55 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 Bexar County
41 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Alamo Heights |
7,357 | 2 | 4.0 mi | |
| Cadillac Water |
252 | 0 | 4.2 mi | |
| City of Shavano Park |
2,200 | 5 | 5.1 mi | |
| City of Leon Valley |
6,870 | 2 | 5.7 mi | |
| North Breeze MHP |
123 | 4 | 5.7 mi | |
| Jbsa Sam Houston |
37,563 | 1 | 6.4 mi | |
| Evetts Apartments |
51 | 6 | 8.2 mi | |
| Bexar County Wcid 10 Windcrest |
8,154 | 1 | 8.6 mi | |
| City of Kirby |
8,142 | 4 | 9.0 mi | |
| Jbsa Lackland |
20,907 | 0 | 10.5 mi | |
| City of Live Oak |
8,724 | 0 | 11.6 mi | |
| Grey Forest Water System |
663 | 4 | 11.9 mi | |
| Cordi Marian Villa |
48 | 4 | 12.5 mi | |
| Lazy Acres Trailer Park |
105 | 4 | 12.6 mi | |
| Estates Utility Stonegate |
276 | 0 | 12.7 mi | |
| City of Converse |
29,709 | 0 | 13.0 mi | |
| City of Universal City |
20,119 | 1 | 13.2 mi | |
| Jbsa Medina |
3,650 | 0 | 13.3 mi | |
| City of Selma |
11,418 | 1 | 13.5 mi | |
| Stagecoach Hills |
489 | 1 | 13.6 mi | |
| Oak North Mobile Homes Estates |
1,059 | 0 | 13.6 mi | |
| Bavarian Hills |
207 | 0 | 13.8 mi | |
| Coolcrest Water System |
951 | 0 | 14.1 mi | |
| The Oaks WSC |
1,191 | 1 | 14.1 mi | |
| Camp Stanley |
133 | 1 | 14.1 mi |
Non-community systems in Bexar County (39: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Bexar 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.