Atty. William Underwood
With more than twenty years of experience in federal, state, and local air quality laws and in representing clients across the U.S. from a variety of industries, Bill is uniquely skilled at providing effective counsel and working toward solutions that best serve his client’s specific needs. Bill is dedicated to helping clients understand their compliance obligations under the myriad of air quality programs, regulations, and agency guidance so that such obligations can be managed as effectively and efficiently as possible.
Profile Summary
About William Underwood at a glance
William Underwood is a environmental attorney based in Phoenix, Arizona, practicing at Gallagher & Kennedy PA. They have 29+ years of legal experience, licensed to practice since 1997. Admitted to practice in Arizona (1997). Educated at Indiana University Bloomington (J.D., 1997) and Arizona State University (M.B.A., 1994). Recognitions include Best Lawyers in America — Environmental Law (2026), Best Lawyers in America — Natural Resources Law (2026), and Best Lawyers in America — Special Focus: (2026). Serands clients in Phoenix, AZ and the surrounding metropolitan area.
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About
- With more than twenty years of experience in federal, state, and local air quality laws and in representing clients across the U.S. from a variety of industries, Bill is uniquely skilled at providing effective counsel and working toward solutions that best serve his client’s specific needs
- Bill is dedicated to helping clients understand their compliance obligations under the myriad of air quality programs, regulations, and agency guidance so that such obligations can be managed as effectively and efficiently as possible
- Given the multi-disciplinary nature of air quality matters, Bill often serves as a catalyst for creating a team approach to problem solving by working closely with management, technical and operational personnel, consultants, and regulators to achieve favorable results for his clients
Practice Areas Explained
William Underwood's Areas of Practice
Each practice area below reflects the types of cases William Underwood handles, with a brief overview of what that area of law covers.
Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.
William Underwood is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in Arizona →
Jurisdictional Context
Why local counsel matters in Arizona
Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Phoenix are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Arizona courts without local counsel or pro hac vice admission.
Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.
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