The term “community water system” means a system for the provision of piped water to the public for human consumption that has 15 or more service connections or regularly serves at least 25 individuals daily at least 60 days out of the year.

There are approximately 3,000 Community Water Systems in the state, meaning systems that serve a residential population year-round (the remaining 5,000 of the state’s 8,000 Public Water Systems are non-community systems and serve places like schools, daycare, hospitals, campgrounds, or businesses that serve at least 25 people but have transient or non-residential populations. Additionally there are an unknown number of unregulated water systems in the state that do not meet the 25 person or 15 connection size threshold for regulation under the Safe Drinking Water Act.

Alexander Valley Acres Mutual Water System has Pre-1914 water rights, that have been grandfathered in under a seniority system. Rights granted after 1914 have to undergo a registration process and acquire a permit or license from the State Water Resources Control Board.

Water Rights: S008628

Water System Number: CA4900646

Taxpayer ID: 23-7281020

Nonprofit Type: 501(c)(12)

DUNS Number: 003587279

Population Served: typically 45 permanent and temporary

Alexander Valley Acres Mutual Water Co, PO Box 451G, Healdsburg, CA 95448