The Deer Valley Ponds are located north of the Deer Valley parking lot in Park City. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Deer Valley Ponds monitoring information below. Updates May 21, 2025: Waterborne pathogen (E. coli) and HAB…