Photo of William J. Anaya

William J. Anaya


Bill Anaya represents manufacturing, commercial, industrial and developer clients in a variety of environmental and governmental matters, drawing on three decades of experience in regulatory litigation. 



  • Illinois
  • Indiana
  • U.S. Tax Court
  • U.S. Supreme Court
  • U.S. District Court for the Northern District of Illinois
  • U.S. District Court for the Central District of Illinois
  • U.S. District Court for the Northern District of Indiana
  • U.S. District Court for the Southern District of Indiana
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. District Court for the Eastern District of Michigan
  • U.S. Court of Appeals for the Seventh Circuit


J.D., Indiana University Maurer School of Law, 1981

B.A., Purdue University, 1978


Bill Anaya’s practice focuses on environmental and administrative law, as well as commercial real estate. He has 30 years of experience in regulatory and liability litigation in state and federal courts across the nation, representing and advocating on behalf of manufacturing, commercial, industrial and developer clients.

Bill has represented clients involved in enforcement actions initiated by federal and state regulatory agencies and state and federal attorneys general. Bill has represented individuals and entities in enforcement and transactional matters involving the EPA, FDA, federal and state transportation and public health departments, the Illinois Environmental Protection Agency and the Indiana Department of Environmental Management, among numerous other state and federal agencies. He has significant experience in civil and criminal administrative disputes and transactions involving regulatory approval, compliance and permits associated with state and federal law and regulatory requirements.

Bill has taught administrative law principles at Loyola University School of Law and the John Marshall School of Law in Chicago. He frequently writes and speaks on topics related to environmental and real estate law, among other topics, and is an editor and author for Illinois Institute for Continuing Legal Education publications.

Professional Affiliations

  • Illinois Institute for Continuing Legal Education, Board of Directors, chair, 2015-present

Honors & Awards

Honors & Awards

  • The Best Lawyers in America, Environmental Law, 2022-2024; Litigation - Environmental, 2024
  • Illinois Super Lawyers, 2006-2009, 2013-2020, 2022
  • Illinois Leading Lawyers, 2018, 2020-2022
  • Addis Hall Award for Excellence in Legal Education, 2005


Representative Matters

  • Successfully converted a significantly contaminated property site, allowing it to be returned to viable commercial use.

News & Insights

Seminars & Speaking Engagements

  • “OSHA: What Every Manufacturer Should Know"
    Decatur Regional Chamber of Commerce, April 13, 2022
  • "Clean Water Act – Water Jurisdiction"
    Chemical Industry Council of Illinois Water Issues Seminar, Countryside, Illinois, September 28, 2017
  • "Case Law and Statutory Update" and "What Color Is Your Commercial Contract?"
    IICLE 13th Annual Real Estate Short Course, Lisle, Illinois, Sept. 19-20, 2017
  • “Oh Sh*$! Now What? The Litigation After Closing”
    Illinois Institute of Continuing Legal Education Real Estate Short Course, October 1, 2015
  • “Fracking in Illinois: Facts and Myths Explained”
    Illinois State Bar Association, September 17, 2013


Articles & Books


This website uses cookies to improve functionality and performance. If you choose to continue browsing this website, you consent to the use of cookies. Read our Privacy Policy here for details.