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Blackridge Reservoir Recreational Monitoring

Icons for safe to swim, safe to boat, safe to eat fish. Although doing all 3 at the same time might be challenging.

Looks Good!

Icons for safe to swim, safe to boat, safe to eat fish. Although doing all 3 at the same time might be challenging.

Blackridge Reservoir is located at 15000 South Ashland Ridge Drive (5390 West) in Herriman. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Blackridge Reservoir monitoring information below.

Updates

June 26, 2025: 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 sampled: Beach area


June 19, 2025: Waterborne pathogen (E. coli) and HAB monitoring update

GOOD NEWS: E. coli counts were measured below recreational thresholds and our monitoring team did not see any visible signs of a harmful algal bloom.

Site sampled: Beach area


May 19, 2025: Waterborne pathogen (E. coli) and HAB monitoring update

GOOD NEWS: E. coli counts were measured below recreational thresholds and our monitoring team did not see any visible signs of a harmful algal bloom.

Site sampled: Beach area

May 19, 2025: Harmful algal bloom (HAB) monitoring update

GOOD NEWS: Our monitoring team did not see any visible signs of a harmful algal bloom. Learn more about harmful algal blooms.

Site visited: Beach area

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