The Pecan Valley Groundwater Conservation District (PVGCD) contracted Daniel B. Stephens & Associates, Inc. to conduct a groundwater sampling program in De-Witt County. This project collected groundwater samples from 137 wells throughout DeWitt County over a three-year period (2022-2024) to assess groundwater chemical composition and potential environmental impacts to aquifers, and to provide a water quality baseline for aquifers of the county.
Groundwater quality samples were analyzed and divided into three analytical suites depending upon the well location. The three analytical suites were: 1) general water quality; 2) hydraulic fracturing; and 3) uranium mining. All wells were sampled with the general water quality suite; whilesomewellshad the hydraulic fracturing or uranium mining suite added to the testing.
Most of the groundwater tested was fresh, with only 13 wells indicating TDS concentrations of 1,000 mg/L. Levels of 1,000 mg/L or greater for TDS is not a healthbased standard, but is related to aesthetic issues. There were no other trends evident in any of the other general water quality parameters.
