Relating to the installation of a filtration system by certain public drinking water supply systems.

HB 5208 requires certain public water systems using underground water sources to install filtration systems if the Texas Commission on Environmental Quality (TCEQ) previously recommended it and either the system failed to maintain the well properly or received multiple complaints about that source in the past year. The bill directly affects public water systems that obtain water from underground sources and have a history of maintenance issues or customer complaints. It gives the TCEQ authority to mandate filtration through an official order under these specific conditions. The law takes effect September 1, 2025.