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2023 Water Quality Report Available

March 20, 2024 - ​The 2023 Water Quality Report is now available online at and covers the drinking water quality for the City of Ann Arbor for the 2023 calendar year. The State of Michigan and the United States Environmental Protection Agency (U.S. EPA) require us to test our water on a regular basis to ensure its safety. Ann Arbor Water met all the monitoring and reporting requirements for 2023 and conducted additional monitoring to ensure we maintain better water quality than regulations require. The information provided in the report is a snapshot of the quality of the water we provided to customers in 2023. Included are details about where water comes from, what it contains, and how it compares to U.S. EPA and State standards. To receive a printed copy of this report please call 734.794.6320, email [email protected], or visit

Ann Arbor has 123,851 residents, spans 28.97 square miles and is frequently recognized as a foremost place to live, learn, work, thrive and visit. To keep up with City of Ann Arbor information, subscribe for email updates, and follow the city on Twitter and Facebook. The city's mission is to deliver exceptional services that sustain and enhance a vibrant, safe and diverse community.