One of the fastest growing regions in the state, cities in the
Inland Empire counties of Riverside and San
Bernardino rely on a mixture of groundwater and surface
water. Some cities are solely dependent on groundwater including
Banning, Coachella, Indio, Palm Desert, Hesperia
and Victorville. Other cities in the region have supplemented
their groundwater supplies with water from the State Water
Project or local streams and reservoirs.