County · Texas
San Patricio County, Texas: drinking water records
This overview covers 9 ZIP codes and 14 community water systems in San Patricio 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 Portland TX2050005 | 22,933 | 120 | 3 | 2 | 1.5 ppb |
| City of Ingleside TX2050002 | 10,106 | 240 | 3 | 1 | 12.3 ppb |
| City of Aransas Pass TX2050015 | 8,088 | 120 | 3 | 1 | 2.8 ppb |
| Rincon WSC TX2050078 | 5,034 | 360 | 2 | 3 | 1.5 ppb |
| City of Mathis TX2050003 | 5,001 | 120 | 2 | 23 | 1.1 ppb |
| City of Taft TX2050007 | 4,941 | 120 | 2 | 3 | 3.0 ppb |
| City of Sinton TX2050006 | 5,505 | 120 | 0 | 0 | 3.7 ppb |
| City of Odem TX2050004 | 2,250 | 0 | 0 | 1 | 1.5 ppb |
| City of Gregory TX2050001 | 1,760 | 0 | 0 | 1 | 0 ppb |
| Saint Paul WSC TX2050010 | 608 | 0 | 0 | 1 | 1.1 ppb |
| Seaboard WSC TX2050063 | 420 | 0 | 0 | 1 | 2.1 ppb |
| City of Ingleside on the Bay TX2050071 | 610 | 0 | 0 | 0 | 4.8 ppb |
| San Patricio County MUD 1 TX2050070 | 540 | 0 | 0 | 0 | 1.7 ppb |
| San Patricio MWD TX2050011 | 48 | 0 | 0 | 0 | 2.4 ppb |
ZIP reports in San Patricio 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.