H.B. No. 1535 amends the governing structure and operational guidelines of the Trinity River Authority of Texas, following recommendations from the Sunset Advisory Commission. Key changes include extending the review period under the Texas Sunset Act to September 1, 2037, and increasing the number of board directors from twenty-four to twenty-five. The bill also modifies the terms of directors from six years to four years, with specific provisions for staggered terms. Additionally, it establishes new grounds for the removal of board members, including failure to maintain qualifications, violation of local government laws, and excessive absences from meetings.

The bill introduces mandatory training for newly appointed directors before they can participate in board activities, ensuring they are informed about the Authority's operations and relevant laws. It also mandates the creation of a complaint management system and policies to enhance public engagement and clarify the separation of policy-making and management responsibilities. The changes are set to take effect on September 1, 2025, allowing current directors to continue serving until their successors are appointed.