School of Life Sciences | Ask A Biologist

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How much water are we using per year in the Phoenix area?

In the Phoenix metropolitan region, we use about 2.3 million acre-feet of water. An acre-foot is the amount of water required to cover an acre of land with one foot of water. It is about 325,851 gallons which is about how much an average family of 4 uses in a year. Most of the water is used for farming (about 40%) and for city water supplies (about 35%). Phoenix-area residents use over 50% of the water we get from city water supplies outside water for watering lawns and maintaining swimming pools. Read more about Arizona water supplies at the Arizona Department of Water Resources.

Grade Level: 11

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Be part of Ask A Biologist

by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.