Division of Water Quality
Mona Reservoir Recreational Monitoring
Mona Reservoir is located in Mona City at the north end of Juab Valley (Juab County). DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.
Looks Good!
There are no current health advisories for this water body.
Conditions may change quickly. Check before entering the water and know how to spot a harmful algal bloom.
Updates
June 16, 2026: Waterborne pathogen (E. coli) monitoring update
GOOD NEWS: E. coli counts were measured below recreational thresholds. Sampling suggests that the water is safe from harmful bacteria and viruses.
Site(s) sampled: Boat Ramp