Texas agencies reported 252 new cases of groundwater contamination during 2023 in the Texas Groundwater Protection Committee annual report.  The latest report compiles 2,870 open cases of groundwater contamination, some of which date back decades. Nearly every county in Texas is impacted by the problem. During 2023, Texas regulators notified 34 local authorities—from El Paso to Houston—that newly identified contamination could impact their public drinking water. An additional 289 property owners were notified that groundwater contamination may impact their private wells. … Agriculture is the biggest consumer of groundwater statewide, according to the Texas Water Development Board. Reliance on groundwater varies around the state, which is divided into water planning regions. In region F, which stretches from the Permian Basin east toward San Antonio, groundwater makes up more than 80 percent of the water supply. In Region K, which covers the Lower Colorado River including Travis County, groundwater provides only 28 percent of the water supply.