Annual Spring Fire Hydrant Flushing Underway


The City of Ann Arbor’s annual fire hydrant inspections and system maintenance are underway as of April 9, 2018. This annual process consists of testing the flow and/or flushing water through selected area hydrants.

You may observe a fire hydrant with water coming out of the side opening during this spring maintenance. A map of the hydrant flushing/inspection/maintenance areas, with the boundaries shaded in red, is available at (The blue-shaded boundaries indicate the areas scheduled next for hydrant flushing.)

Why is it helpful to know when hydrant flushing and flow testing are happening in your neighborhood? On occasion, the water in your home or businesses may have an orange or rusty appearance.

The water is safe to use and drink, but it can cause stains to laundry if the discoloration is not first cleared from the lines. The iron sediment in the water main being disturbed by the hydrant flushing causes the discoloration. If this occurs, please run your cold water for several minutes and flush your toilet to clear your lines. If you have any questions or concerns regarding the hydrant flushing process, the city is available to help you.

Please call City of Ann Arbor customer service at 734.794.6320 or visit, and subscribe to email updates of the hydrant flushing schedule through the city’s free subscription service.

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