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Colorado River Recreational Monitoring
Colorado River serves 40 million people in seven states. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Colorado River monitoring information below. Updates November 1, 2025: Recreational water quality monitoring update Recreational water quality monitoring has ended for the season.…
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Colorado River
Read about Utah DEQ’s regulatory interests in the Colorado River.
