The Arizona Corporation Commission maintains regulatory authority over private water companies and private sewer companies throughout Arizona. There are presently more than 400 individual water systems operated by nearly 350 companies under our jurisdiction. There are approximately 21 sewer companies and 20 combination water and sewer providers that we regulate. Multiple systems can be operated by the same utility company.

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Arizona's Water Companies
Arizona's Sewer Companies

For a closer view of each county, click on the county itself or its name in the legend.

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