County · Texas
Grimes County, Texas: drinking water records
This overview covers 7 ZIP codes and 18 community water systems in Grimes County. It also stands in for 2 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 Navasota TX0930001 | 8,068 | 60 | 0 | 2 | 0 ppb |
| Wickson Creek SUD Grimes County TX0930003 | 4,843 | 120 | 1 | 0 | 0.6 ppb |
| Dobbin Plantersville WSC 2 TX0930049 | 2,766 | 0 | 0 | 7 | 0 ppb |
| G & W WSC TX0930048 | 1,650 | 0 | 0 | 50 | 0.7 ppb |
| Tdcj Pack Unit TX0930034 | 1,597 | 0 | 0 | 13 | 5.8 ppb |
| Tdcj Luther Units TX0930033 | 1,431 | 0 | 0 | 3 | 2.9 ppb |
| Anderson Water System TX0930011 | 226 | 0 | 0 | 1 | 0 ppb |
| Richards Water System TX0930015 | 200 | 0 | 0 | 1 | 0 ppb |
| Grassy Creek Mobile Home Park TX0930006 | 183 | 0 | 0 | 1 | 0.5 ppb |
| Shiro Water System TX0930014 | 103 | 0 | 0 | 1 | 0 ppb |
| Roans Prairie TX0930016 | 40 | 0 | 0 | 2 | 0 ppb |
| B & J Water Co TX0930012 | 675 | 0 | 0 | 0 | 0 ppb |
| Mill Creek Estates TX0930054 | 608 | 0 | 0 | 0 | 0 ppb |
| Poe Bracewell Water System TX0930035 | 220 | 0 | 0 | 0 | 0 ppb |
| Shady Oaks MHP TX0930046 | 174 | 0 | 0 | 0 | 0.2 ppb |
| Shannon Place Water System TX0930052 | 159 | 0 | 0 | 0 | 0 ppb |
| West Magnolia Forest TX0930042 | 153 | 0 | 0 | 0 | 1.5 ppb |
| Highway 90 Estates TX0930036 | 39 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Grimes County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 77831, 77876.
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.