Correspondence issued by the Government Accountability Office with an abstract that begins "State environmental agencies use federal grants from the Environmental Protection Agency, in addition to their own funds, to help implement and enforce the nation's environmental laws, including the Clean Water Act, the Clean Air Act, and the Safe Drinking Water Act. Under this approach the states have an important role as partners and co-regulators, and, among other things, issue and enforce permits, carry out inspections, and monitor and collect data. EPA provides grants, known as categorical grants, to states to assist in implementing water, air, waste, and other programs that carry out federal environmental requirements."