Arizona

• Bullhead City
• Casa Grande
• Chandler
• Glendale
• Goodyear
• Lake Havasu
• Oro Valley
• Peoria
• Pima County
• Pinal County
• Prescott Valley
• Queen Creek
• Sahuarita
• Tempe
• Tucson
• Tucson Water

Nevada

• Clark County
• Washoe County

Utah

• Murray
• Salt Lake City

California

• Anaheim
• Bakersfield
• Beverly Hills
• Brentwood
• Butte County
• Campbell
• Chula Vista
• Compton
• Contra Costa County
• Cucamonga Valley Water District
• Eastern Municipal Water District
• Elk Grove
• Fontana
• Fremont
• Fresno
• Fullerton
• Galt
• Hesperia
• Huntington Beach
• Indio
• Irvine
• Livermore
• Marin County
• Merced
• Modesto
• Morgan Hill
• Napa
• Novato
• Oxnard
• Palo Alto
• Placer County
• Riverside
• Riverside County
• Roseville
• Sacramento County
• San Dimas
• San Francisco
• San Leandro
• San Luis Obispo County
• San Mateo
• San Ramon
• Santa Margarita Water District
• Santa Monica
• Santa Rosa
• Sonoma County
• Stockton
• Thousand Oaks
• Torrance
• Truckee
• Tulare County
• Turbo Data
• Vallejo
• Victorville
• West Valley Water District
• Yorba Linda
• Yuba County