Water quality for ZIP code 78009
ZIP 78009 covers Castroville 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 |
|---|---|---|---|---|
| New Alsace WSC |
201 | 0 | 1.1 mi | |
| Medina River West WSC |
1,158 | 0 | 1.9 mi | |
| Valley Mobile Home Properties |
219 | 4 | 2.2 mi | |
| Highway 90 Ranch WSC |
412 | 2 | 2.3 mi | |
| Medina Valley Water Supply CO |
255 | 0 | 2.7 mi | |
| Ville Dalsace Water Supply |
597 | 5 | 2.8 mi | |
| East Medina County SUD Unit 3 |
1,365 | 0 | 3.5 mi | |
| City of la Coste |
1,488 | 1 | 4.3 mi | |
| Old Hwy 90 Water Service |
1,215 | 0 | 5.5 mi | |
| East Medina County SUD Unit 2 |
2,505 | 0 | 7.1 mi | |
| East Medina County SUD Unit 1 |
6,153 | 0 | 7.4 mi | |
| West View Subdivision |
900 | 0 | 7.7 mi | |
| East Medina County SUD Unit 4 |
483 | 0 | 7.8 mi | |
| Rio Medina Estates |
201 | 2 | 10.9 mi | |
| City of Natalia |
1,336 | 3 | 11.7 mi | |
| Rocky Creek Subdivision Water System |
156 | 0 | 11.9 mi | |
| Yancey WSC |
12,186 | 0 | 12.4 mi | |
| Summit Ridge |
252 | 2 | 13.0 mi | |
| City of Devine |
4,335 | 3 | 14.6 mi | |
| Dancing Bear |
444 | 0 | 16.1 mi | |
| City of Hondo |
11,044 | 2 | 16.5 mi | |
| Gusville Mobile Home Park |
273 | 3 | 17.3 mi | |
| Old Hwy 90 N Ridge W System |
246 | 1 | 18.2 mi | |
| Valentine Ranch |
195 | 0 | 19.2 mi | |
| Country View Estates |
330 | 3 | 19.6 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 |
|---|---|---|---|---|
|
Castroville Airport |
150 | 0 | 0 | |
|
Medina Valley High School |
2,501 | 4 | 1 | |
|
Zinsmeyer Trailer Park |
50 | 0 | 0 | |
|
Martin Marietta Medina County Quarry |
45 | 2 | 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.