Castillo, Andres

Associate
(512) 322-5868

As a member of the Water, Districts, and Litigation Practice Groups, Andres focuses on water-related legal and policy issues, including statutory and regulatory compliance, permitting, water rights, water resource management and development, and transactional matters.

He represents and advises public and private entities—including utilities, groundwater conservation districts, cities, landowners, and developers—in matters involving Certificates of Convenience and Necessity (CCNs), utility service agreements, groundwater permitting and enforcement, and regulatory compliance. Andres also provides counsel on open government requirements, including compliance with the Texas Open Meetings Act and the Texas Public Information Act. He regularly appears before the Public Utility Commission, the Texas Commission on Environmental Quality, and the State Office of Administrative Hearings, and has experience in both state and federal court.

Andres previously served as a Law Clerk for Lloyd Gosselink following his first year of law school.

  • Admitted to the State Bar of Texas, 2024
  • J.D., The University of Texas School of Law, 2023
  • B.B.A. in Finance, summa cum laude, The University of Texas at San Antonio, 2020
  • Judicial Intern, U.S. District Court, Southern District of Texas
  • Judicial Intern, Travis County District Court
  • Provides counsel, regulatory compliance, and additional legal services for numerous entities, including groundwater conservation districts, water supply corporations, and investor-owned utilities.
  • State Bar of Texas
  • Austin Bar Association
  • University of Texas School of Law Pro Bono Honors Award
  • University of Texas at San Antonio Top Scholar (full-ride merit-based scholarship award)
Andres enjoys paddle boarding on Lady Bird Lake, golfing, trying out new foods, and spending time with his family at South Padre Island.

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