Derek L. Seal

Derek L. Seal

Administrative / Regulatory Law Environmental Law Water Law
Recognized in Best Attorney USA since 2016

About Derek

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.

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.

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Reviews

4.6 / 5

38 Reviews

1,042 Profile Views

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Raymond Wyman

Jan 31, 2026

Outstanding experience with Derek L. Seal in Austin - truly the best legal team

If you're looking for someone who actually cares and will fight for you, go to Derek L. Seal. They helped me out big time with my Administrative / Regulatory Law issue and kept me informed at every st...

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Anthony Cruickshank

Jan 31, 2026

Really helpful and compassionate service from everyone at Derek L. Seal's firm

Everyone at Derek L. Seal's office in Austin was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I never felt like jus...

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Gene Bode

Jan 31, 2026

Simply amazing representation from Derek L. Seal's office during my recent legal matter

Short and sweet: Derek L. Seal is the real deal and a true professional in the field of Administrative / Regulatory Law. If you're in Austin and need help with your legal issues, call them immediately...

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Nichole McClure

Jan 31, 2026

Many thanks to Derek L. Seal for the hard work and dedication to my legal matter

Derek L. Seal is fantastic and very professional. Don't hesitate to hire them if you're in Texas and need help. They really know their stuff and will go the extra mile to make sure you're taken care o...

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Ernest Kuphal

Jan 31, 2026

Many thanks to Derek L. Seal for the hard work and dedication to my legal matter

Really glad I found Derek L. Seal for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in Tex...