Imagine Mesa in a whole new way! Share your ideas for Mesa’s future at


Press Enter to show all options, press Tab go to next option

Temporary change in water taste and odor

Post Date:08/30/2017 12:46 PM
  • Lead Mesa residents may notice a temporary earthy taste/odor in their water due to a seasonal algae byproduct - geosmin. Geosmin is naturally-occurring during hot weather and is not harmful. The water is safe to drink and use in daily activities. For questions call (480) 644-6461.

Mesa residents may notice a slight change in the taste and odor of their water for the next few weeks. The temporary change is caused by a byproduct of seasonal algae in surface water called geosmin. Even at low concentrations, geosmin causes a musty or soil-like taste and odor in the water. Geosmin is not harmful and the water is safe to drink and use in daily activities. The City of Mesa’s Brown Road Water Treatment Plant is using carbon treatment to reduce geosmin in the water distribution system.   

Mesa’s water continues to meet all state and federal drinking water standards. For more information about water quality, the City of Mesa’s Consumer Confidence Report can be found online at For questions or hard copies of the report, please contact (480) 644-6461 or

Return to full list >>