Which state agency regulates public water supplies in Texas?

The Texas Commission on Environmental Quality (TCEQ) is the agency responsible for regulating public water supplies in Texas. This agency oversees the quality of water that is supplied to the public, ensuring that it meets safety standards and is free from contaminants. TCEQ develops and enforces rules and regulations that govern water quality, helping to protect public health and the environment.

The TCEQ also monitors compliance among public water systems and provides guidance and support to local water suppliers. By setting standards and conducting inspections, TCEQ plays a crucial role in maintaining the integrity of the water supply across the state.

The other options, while related to water resources, do not have the specific mandate for regulating public water supplies in Texas. For instance, the EPA (Environmental Protection Agency) operates at a federal level and sets broad standards but relies on state agencies like TCEQ for implementation and enforcement at the local level. The USGS (U.S. Geological Survey) focuses on studying natural resources, including water resources, but does not regulate public water supplies. The Texas Water Development Board primarily deals with water planning and financing rather than direct regulation of public water systems.