Relating to testing for mifepristone and other estrogen hormones in public drinking water.

HB 3734 amends Texas law to require public water systems to test for mifepristone and estrogen hormones in drinking water, in addition to existing testing requirements. This bill directly affects municipal and community water providers across Texas by adding these specific substances to mandatory water quality testing protocols. The key provision (Section 1) amends the Health and Safety Code to explicitly include mifepristone (a medication used in medical procedures) and estrogen hormones in required testing under Section 341.033(c). The law takes effect on September 1, 2025, but does not establish new testing standards or penalties for non-compliance.