County · Texas
Hays County, Texas: drinking water records
This overview covers 7 ZIP codes and 52 community water systems in Hays 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 |
|---|---|---|---|---|---|
| City of San Marcos TX1050001 | 72,970 | 780 | 3 | 1 | 1.6 ppb |
| Goforth SUD TX1050019 | 34,893 | 360 | 5 | 2 | 0 ppb |
| La Ventana Water Supply System TX1050131 | 747 | 56 | 0 | 1 | 2.5 ppb |
| City of Kyle TX1050002 | 52,000 | 300 | 3 | 0 | 1.9 ppb |
| Texas State University - San Marcos TX1050003 | 43,552 | 60 | 0 | 0 | 1.3 ppb |
| County Line SUD TX1050038 | 19,609 | 180 | 1 | 0 | 0 ppb |
| City of Buda TX1050012 | 13,830 | 600 | 2 | 0 | 1.5 ppb |
| Dripping Springs WSC TX1050013 | 8,037 | 180 | 0 | 0 | 1.9 ppb |
| Plum Creek TX1050028 | 7,065 | 240 | 0 | 0 | 1.2 ppb |
| Wimberley WSC TX1050018 | 5,334 | 180 | 0 | 0 | 2.1 ppb |
| Woodcreek Utility Co 2 TX1050039 | 3,096 | 0 | 0 | 1 | 2 ppb |
| Goldenwood West WSC TX1050081 | 462 | 0 | 0 | 1 | 1 ppb |
| Skyline Ranch Estates WSC TX1050078 | 261 | 0 | 0 | 1 | 1.3 ppb |
| Lsr WSC TX1050135 | 126 | 0 | 0 | 1 | 0.9 ppb |
| Radiance WSC TX1050075 | 120 | 0 | 0 | 8 | 0.6 ppb |
| Wimberley Oaks WSC TX1050120 | 69 | 0 | 0 | 2 | 0 ppb |
| Blue Agave Mobile Home Park TX1050105 | 57 | 0 | 0 | 1 | 2.9 ppb |
| Signal Hill Water System 24 TX1050035 | 42 | 0 | 0 | 1 | 1 ppb |
| Prochnow Country Homes TX1050191 | 30 | 0 | 0 | 1 | 0 ppb |
| Hays County WCID 2 TX1050148 | 3,381 | 0 | 0 | 0 | 2.9 ppb |
| Hays County WCID 1 TX1050137 | 2,850 | 0 | 0 | 0 | 1.0 ppb |
| Woodcreek Utility Co 1 TX1050037 | 2,700 | 0 | 0 | 0 | 1.1 ppb |
| South Buda WCID 1 TX1050154 | 2,517 | 0 | 0 | 0 | 0.8 ppb |
| Headwaters at Barton Creek TX1050184 | 2,315 | 0 | 0 | 0 | 0 ppb |
| Cimarron Park Water TX1050059 | 2,079 | 0 | 0 | 0 | 3.3 ppb |
ZIP reports in Hays 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.