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San Juan River Recreational Monitoring
DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent San Juan River monitoring information below. Updates: October 31, 2023: Waterborne pathogen (E. coli) monitoring update Recreational monitoring has ended for the season. Monitoring will resume in summer 2024. Waterborne pathogens may…
