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Water Resource Management Made Clear

One Drop at a Time.

The Raymond Basin Management Board is responsible for managing the current and future quality and quantity of water resources for the benefit of its members and the communities they serve in the Raymond Basin.

SERVICES

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WATER QUALITY

Adjudicated in 1944, City of Pasadena v City of Alhambra et al. was the first basinwide adjudication of groundwater rights in California. The Raymond Basin Management Board was appointed Watermaster in 1984.

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WATER SUPPLY

The Raymond Basin Management Board regularly monitors groundwater quality in cooperation with local, regional, and state agencies.

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GROUNDWATER MANAGEMENT

The Raymond Basin Management Board is responsible for managing water supply from groundwater fed by local precipitation, imported State Water Project and Colorado River Project water, and recycled water sources.

 

CONTACT
LOCATION
OPENING HOURS

Email: admin@watermaster.org
Phone: 626-815-1300
Fax: 626-815-1303

725 North Azusa Avenue

Azusa, CA 91702

Mon - Fri: 8am - 5pm

​​Saturday: Closed

​Sunday: Closed

© 2025 Raymond Basin Management Board

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