Water Treatment

Water Treatment

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2017 Water Quality Report

2017 Water Quality Report cover.jpg

​We are pleased to share our annual drinking water quality report (PDF). This report explains where your drinking water comes from, what is in it and how we keep it safe.​


Open house

On Monday, May 5, 2018, from 11 a.m. to ​3 p.m. the Water Treatment Plant will be holding it's annual open house at 919 Sunset Road in Ann Arbor.  All Ages are welcome. Tours, Kids Activities, Light Refreshments, and new this year- music by Joe Reiley!​

This is in conjunction with City of Ann Arbor Water Month, in May.  Other events in May include the 38th Annual Huron River Day on May 20th.​​

Cost of service study

Ann Arbor’s water infrastructure is essential to City’s quality of life. This largely unseen network of treatment facilities, pipes, and valves requires constant attention and investment. Doing so costs money and in the upcoming years much of this infrastructure will need to be upgraded or replaced. That is why the City of Ann Arbor will be conducting a Cost of Service (COS) study for its drinking water and wastewater rates.

Information about perfluorinated compounds (PFOA/PFOS)

Perfluorinated compounds are typically associated with the manufacture of carpeting, personal care products, cookware (e.g., Teflon), and other products. The amounts detected in the City's raw water supply and finished water are very low, on average they are 8 to 15 ng/l (ng is a nanogram). It is only in recent history that we have been able to detect compounds at such a low level. The levels found in the City's water remain almost 10 times lower than the EPA health advisory levels. The City water utility is continuing to monitor for these compounds as well as other emerging contaminants, and remains steadfast in its effort to provide safe drinking water for its customers. If you have any specific concerns or other questions, we look forward to answering them. We can be reached at 734.994.2840 or water@a2gov.org.

​Experts agree, our water tastes good!

For the second year in a row, Ann Arbor has been recognized with high caliber tasting water.  In 2017, at the National Stage, Ann Arbor came in 4th in the water taste-off at the National American Water Works Association conference in Philadelphia.  Among 34 competitors from the United States and Puerto Rico, Ann Arbor was highly ranked.  The 2017 win built on a big victory from 2016, when we took home to top prize of best tasting water in Michigan  at the State annual conference in Harbor Springs, MI.  Each year we have beaten out some tough competitors (such as our neighbors in Chelsea).  Drink up, folks!   

Fire hydrant flushing

Hydrant flushing is part of the City's annual maintenance and done to remove minerals and ​sediment that accumulate in the water lines over the course of a year. This preventative maintenance also allows us to check and record water pressure to ensure the water system is functioning properly.

Please take advantage of our graphical map to see which areas of the city are currently having their hydrants flushed. 

919 Sunset Road
Ann Arbor, MI 48103
Phone: 734.794.6426

Open 24 hours a day/ 7 days a week for water emergencies.

Contact us about a guided tour for your group of 10 or more.