Derek L. Seal

Derek L. Seal

Austin, TX recognized lawyers icon Recognized in Best Lawyers since 2016
McGinnis Lochridge

20 Best Lawyers awards

McGinnis Lochridge logo

Awarded Practice Areas

Administrative / Regulatory Law Environmental Law Water Law

Biography

Derek practices administrative and regulatory law with a focus on environmental permitting and enforcement. With more than 30 years of regulatory and legislative experience, Derek assists clients with a wide range of matters, including Texas Commission on Environmental Quality (TCEQ) contested case hearings and regulatory compliance, water supply and water rights, air, water, waste, and wastewater discharge permitting.Derek previously held roles as General Counsel of the TCEQ, Counsel to former TCEQ Chairman Kathleen Hartnett White, General Counsel in the Texas Legislature for the House Committee on Environmental Regulation, and General Counsel and Chief of Staff for Representative Warren Chisum.
McGinnis Lochridge

20 Best Lawyers awards

McGinnis Lochridge logo

Overview

  • St. Mary’s University School of Law, J.D., graduated 1996
  • St. Mary’s University School of Law, J.D., graduated 1996

Client Testimonials

Awards & Focus

Recognized in The Best Lawyers in America® 2026 for work in:
  • Administrative / Regulatory Law
  • Environmental Law
  • Water Law
Additional Areas of Practice:
  • Energy Regulatory Law

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