Ann Arbor Water Distribution Plan Update


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​​​Fourth floor, 301 E Huron St., P.O. Box 8647, Ann Arbor, MI 48107​

Troy Baughman, P.E.
Senior Project Engineer

734.794.6430 x43798

The City of Ann Arbor maintains a water distribution system dating back to the late 1800's serving residents and businesses of Ann Arbor as well as the University of Michigan, Scio Township and Ann Arbor Township.

Drinking water is drawn from both surface and groundwater sources and treated at the WaterA2 Water Tower image.webp Treatment Plant (WTP). Downstream of the city's WTP there are:

  • 4 remote pumping stations
  • 6 storage tanks
  • Nearly 500 miles of water pipes 

To provide the highest quality drinking water, it's critical for the city to review and evaluate the conditions and capacity of the system on a regular basis.

In March 2024, the city launched an update to its comprehensive water distribution plan, which is used to strategi​cally plan and budget for improvements, ensure a sustainable and resilient water system now and into the future, as well as evaluate current practices and ensure preparedness for emergencies. The update of the hydraulic model aims to mirror the real-life dynamics of the city's water system, providing an invaluable tool to inform decisions.

A comprehensive water distribution plan and hydraulic model was previously developed in 2010 and has continued to be update​d. This project will build upon what was previously developed and incorporate the multiple projects and studies that have been completed since that time.

Work is currently underway and is​ expected to continue through November, 2025. The city has engaged OHM Advisors to conduct the plan update and model. 

If you would like updates on this and other Ann Arbor water news, please subscribe to our monthly newsletter.

Check out the city's video to discover the world of water just beneath your feet!

Additional information​