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Media Contact: DeEtte Person ~ ~ 623-869-2597 ~ 480-620-7685

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Marie S. Pearthree, P.E. has accepted a position at Central Arizona Project as the Assistant General Manager of Business Planning. She will be responsible for developing and managing relationships with external stakeholders and will manage the development of CAP's Business Plan. Ms. Pearthree will represent CAP in research and discussions related to climate change and its affect on water issues with international, federal, state, and local agencies. She was selected after a nationwide search and will join the CAP Senior Management Team on July 13, 2009.

Ms. Pearthree has been a Professional Engineer since 1991, and has been working on water related issues for 28 years. Her most recent experience is as a Senior Water Management Consultant for CH2M HILL Engineering. From 1998 to 2008 she served as the Deputy Director of the Tucson Water Department. During that time, Ms. Pearthree was instrumental in restoring public trust in Tucson Water and Central Arizona Project water through the utility's comprehensive "At the Tap" program, which combined research with public outreach and involvement activities regarding Colorado River water quality. She also managed the planning and development of Tucson Water's Clearwater Program, which provides a blend of recharged Colorado River water and native groundwater to most of Tucson Water's customers.

Ms. Pearthree is active in a number of national water organizations, and currently serves on the Boards of the American Water Works Associations and the Arizona Water Association, where she was involved in the creation of the Arizona Water/Wastewater Utility Council and helped institute AZWARN, a statewide emergency mutual assistance program for water and wastewater utilities. Locally, she is a member of Greater Tucson Leadership and has been a volunteer for a number of charitable and non-profit organizations.

She holds a Master of Science degree from the University of Arizona in Fluvial Geomorphology and a Bachelor of Arts degree from Oberlin College in Geosciences.


CAP is the steward of central Arizona's Colorado River water entitlement and a collaborative leader in Arizona's water community. The 336-mile-long CAP system brings about 1.5 million acre-feet of renewable Colorado River water to its customers -- cities, businesses, agriculture and Indian communities -- in Pima, Pinal and Maricopa counties. An acre-foot of water is about 326,000 gallons.