Water quality for ZIP code 78850
ZIP 78850 covers D'Hanis in Medina County, Texas, one of 9 ZIP codes in the county. 34 active public water systems serve the county; 16 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 Medina County
28 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Medina County Wcid 2 |
756 | 2 | 4.2 mi | |
| City of Hondo |
11,044 | 2 | 11.2 mi | |
| Yancey WSC |
12,186 | 0 | 15.8 mi | |
| East Medina County SUD Unit 4 |
483 | 0 | 19.5 mi | |
| Old Hwy 90 N Ridge W System |
246 | 1 | 21.3 mi | |
| East Medina County SUD Unit 2 |
2,505 | 0 | 21.4 mi | |
| Old Hwy 90 Water Service |
1,215 | 0 | 21.6 mi | |
| Ville Dalsace Water Supply |
597 | 5 | 24.5 mi | |
| East Medina County SUD Unit 3 |
1,365 | 0 | 24.7 mi | |
| Highway 90 Ranch WSC |
412 | 2 | 24.9 mi | |
| New Alsace WSC |
201 | 0 | 26.1 mi | |
| East Medina County SUD Unit 1 |
6,153 | 0 | 26.9 mi | |
| Gusville Mobile Home Park |
273 | 3 | 27.1 mi | |
| Medina River West WSC |
1,158 | 0 | 27.1 mi | |
| City of Devine |
4,335 | 3 | 27.4 mi | |
| Rocky Creek Subdivision Water System |
156 | 0 | 27.5 mi | |
| City of Castroville |
3,913 | 0 | 27.6 mi | |
| Valley Mobile Home Properties |
219 | 4 | 29.3 mi | |
| City of Natalia |
1,336 | 3 | 29.3 mi | |
| Medina Valley Water Supply CO |
255 | 0 | 29.7 mi | |
| City of la Coste |
1,488 | 1 | 31.0 mi | |
| Summit Ridge |
252 | 2 | 32.2 mi | |
| West View Subdivision |
900 | 0 | 32.2 mi | |
| Rio Medina Estates |
201 | 2 | 34.0 mi | |
| Dancing Bear |
444 | 0 | 34.0 mi |
Non-community systems in Medina County (5: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Martin Marietta Medina County Quarry |
45 | 2 | 0 | |
|
Castroville Airport |
150 | 0 | 0 | |
|
Medina Valley High School |
2,501 | 4 | 1 | |
|
Zinsmeyer Trailer Park |
50 | 0 | 0 | |
|
Everfree Shire Ranch |
2 | 0 | 0 |
About this data
Water systems are matched to Medina 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.