County · Texas
Caldwell County, Texas: drinking water records
This overview covers 7 ZIP codes and 9 community water systems in Caldwell 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 |
|---|---|---|---|---|---|
| Maxwell SUD TX0280003 | 16,104 | 180 | 2 | 24 | 1.1 ppb |
| City of Lockhart TX0280001 | 18,800 | 180 | 0 | 0 | 1.6 ppb |
| City of Luling TX0280002 | 7,364 | 120 | 0 | 0 | 0 ppb |
| Martindale WSC TX0280013 | 3,045 | 0 | 0 | 4 | 0 ppb |
| Youngs Community LLC. Water System LA1055123 | 144 | 0 | 0 | 4 | 0 ppb |
| Tri Community WSC TX0280012 | 1,698 | 0 | 0 | 0 | 2.2 ppb |
| Alliance Regional Water Authority 1b TX0280027 | 0 | 0 | 0 | 0 | not reported |
| Crwa Hays Caldwell WTP TX0280024 | 0 | 0 | 0 | 0 | not reported |
| Gbra Luling Plant TX0280018 | 0 | 0 | 0 | 0 | not reported |
ZIP reports in Caldwell 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.