Present and future protection of the nation's groundwaters depends on controlling the interrelated problems of excessive withdrawals and contamination. In this article the author investigates the existing federal legal authority relative to groundwater protection, as well as the state of Georgia's legal authority. The following federal statutes are discussed: the Clean Water Act; the Safe Drinking Water Act; the Resource Conservation and Recovery Act; the National Environmental Policy Act; the Toxic Substances Control Act of 1976; the Surface Mining Control and Reclamation Act; the federal Insecticide, Fungicide, and Rodenticide Act; the Uranium Mill Tailing Radiation Control Act; and the Comprehensive Environmental Responses, Compensation, and Liability Act. The author identifies gaps in the federal and state regulatory laws as they apply to use of aquifers underlying the state of Georgia, and recommends the implementation of a federal groundwater strategy, state protection of groundwater quality, and a statewide use permit system. Includes 24 references, figures.