Maintains and repairs backflow devices, altitude valves, pressure regulating valves, check valves, gate valves, hydrants, generators, pumps, air compressors and other apparatus and equipment, including and not limited to, programmable logic controls, grinders/comminutors, cathodic protection, hydrostatic pressure vessels, and air bubbler systems. Through its wholly owned subsidiaries, American States Utility Services, Inc. contracts with the federal government to provide water and wastewater services that include operating, maintaining, renewing, replacing, and constructing new systems on military installations throughout the United States.