Regional Water Authority Share: Utility Companies & Sanitation Services Regional Water Authority Visit Website 5620 Birdcage St Ste 180 Citrus Heights, CA 95610 (916) 967-7692 (916) 967-7322 (fax) About Map About RWA is a joint powers agency representing more than 20 water providers in the greater Sacramento Region, including Yolo, El Dorado, Placer, and Sacramento Counties. RWA’s mission is to assist its memb What's Nearby? Distance: 5 10 15 20 25 50 mi.