County · Texas
Guadalupe County, Texas: drinking water records
This overview covers 7 ZIP codes and 14 community water systems in Guadalupe County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Springs Hill SUD TX0940022 | 35,541 | 300 | 3 | 8 | 1.1 ppb |
| City of Seguin TX0940002 | 32,736 | 179 | 2 | 1 | 1.5 ppb |
| Crystal Clear SUD TX0940015 | 20,766 | 420 | 2 | 6 | 1.6 ppb |
| Green Valley SUD TX0940020 | 52,497 | 360 | 1 | 0 | 1.8 ppb |
| City of Schertz TX0940003 | 41,948 | 180 | 0 | 0 | 0 ppb |
| City of Cibolo TX0940018 | 20,331 | 120 | 1 | 0 | 1.1 ppb |
| City of Marion TX0940001 | 1,971 | 0 | 0 | 1 | 5 ppb |
| Garden Oaks TX0940030 | 309 | 0 | 0 | 2 | 0 ppb |
| Shady Meadows Mobile Home Park TX0940097 | 64 | 0 | 0 | 2 | 0 ppb |
| Lago Vista Water System TX0940029 | 54 | 0 | 0 | 1 | 0 ppb |
| Memory Lane MHP TX0940092 | 30 | 0 | 0 | 1 | 1 ppb |
| Crwa Lake Dunlap WTP TX0940091 | 14 | 0 | 0 | 9 | not reported |
| Schertz Seguin Local Government Corporat TX0940094 | 0 | 0 | 0 | 1 | not reported |
| Crwa Wells Ranch TX0940096 | 0 | 0 | 0 | 0 | not reported |
ZIP reports in Guadalupe County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.