Seasonal Taste and Odor in
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
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
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.