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Contact Us

Phone numbers, addresses, online commenting, and more ways you can contact us at the TCEQ.

Regional Offices Statewide

TCEQ Headquarters

Main Switchboard:

For the Hearing Impaired (TDD):

Office Hours:
8:00 a.m. to 5:00 p.m., Mon. thru Fri. (except holidays)

Mailing Address:
Contact Name, Mail Code
P.O. Box 13087
Austin, TX 78711-3087
- Use for regular and certified mail.

Physical Address:
Contact Name, Building Letter
12100 Park 35 Circle
Austin, TX 78753
- Use for express carrier deliveries (U.S. Post Office Express Mail, FedEx, UPS, etc.).
- Please call your TCEQ contact to determine the exact building location before sending to the physical address.

Austin offices street map

Security procedures for visitors to the TCEQ