He earned his law degree at The University of Chicago Law School and his master’s degree in water science, policy and management at The University of Oxford in Oxford, England. Larson has many published articles, including The New Right in Water; Water, Worship, and Wisdom: Indigenous Traditional Ecological Knowledge and the Human Right to Water; and Innovation and International Commons: The Case of Desalination under International Law. His legal experience includes work at Gallagher & Kennedy, P.A. and Perkins Coie Brown & Bain, P.A., both of Phoenix., with particular expertise in water rights, water quality, water utility transactions, energy law, mining law, agricultural law, and Native American law.