As of March 5, 2026: Texas communities are being targeted in a phishing campaign with emails posing as TWDB.

Administrative Rules

Rule Review Schedule

Pending Rule Actions

There are no pending rules at this time.


Comments on pending rulemaking may be submitted to Ashley Harden, Office of General Counsel, Texas Water Development Board, P.O. Box 13231, Austin, Texas 78711-3231, rulescomments@twdb.texas.gov, or by fax at (512) 475-2053.

Adopted Rules

Please contact the Texas Register by Mail: P.O. Box 13824, Austin, TX 78711-3824, or by Phone: (512) 463-5561

Adopted TWDB Rules are published under Title 31, Part 10 of the Texas Administrative Code on the Secretary of State's website. For your convenience, links to individual rules are listed below:

Rule Number Heading Action Texas Register Issue Comment Deadline Spanish Translation