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

1,047 Profile Views

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Patti Carroll-Parker

Jan 31, 2026

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

I didn't think I'd find such a good lawyer in Texas, but here we are and I am thoroughly impressed. Derek L. Seal is just awesome and exceeded all my expectations. No complaints at all! They really ta...

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Sean Vandervort

Jan 31, 2026

Would recommend Derek L. Seal for sure to anyone in Austin needing legal help

Just wanted to say a huge thanks to Derek L. Seal and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it without their con...

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Miguel Kling

Jan 31, 2026

Absolutely Great! I couldn't be happier with the service from Derek L. Seal

Best lawyer for Administrative / Regulatory Law in Austin. Period. I've seen others, but Derek L. Seal is on another level. They truly care about their clients and work hard to get the best results. I...