Free, supervised child care during Mesa Public Schools closure.  Visit for details.

Seasonal Taste and Odor in Drinking Water

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

At times the City of Mesa may experience seasonal taste and odor problems associated with the drinking water.  The safety of the water is not at risk; however, you may perceive that the water is unsafe to drink because it has an unpleasant smell or taste.  Customers often describe the taste and smell as "musty", "dusty", or "earthy."  The primary causes are Geosmin and Methylisoborneol (MIB), which are non-harmful, naturally-occurring compounds associated with algae growth in lakes and canals.

To help eliminate taste and odor problems, powdered activated carbon (PAC) is added during the water treatment process.  Regular analysis of water samples helps determine how much PAC to use and identifies necessary adjustments to the treatment process.

The City's goal is to eliminate taste and odor problems associated with the drinking water.  We will continue to use new technologies and improve existing processes to meet this goal.

For more information about Seasonal Taste and Odor
Please contact the Water Quality division at 480-644-6461.