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Vernal, UT June 23, 2021 – Division of Water Quality (DEQ) tested Matt Warner Reservoir and discovered elevated levels of cyanobacteria, the bacteria that make up Harmful Algal Blooms (HABs). HABs look like algae on the water The algae is a bacteria that is harmful to humans and pets. 


The Division of Natural Resources (DNR) posted warning signs on June 23, 2021, to warn the public to not swim in the water and use caution while boating and fishing. HABs frequently occur in the Matt Warner Reservoir and Calder Reservoir during summer months, when recreating at Matt Warner or any body of water, watch for fluorescent green algae. 


“We expected Matt Warner to test high as it does every year,” Director of Environmental Health, Darrin Brown, said. “We urge the community to use caution when recreating this summer and watch for posted warning signs around lakes and reservoirs. HABs can appear on all major bodies of water during the summer months.”


When recreating, the public can report HABs that are spotted on bodies of water by calling the DEQ 24 hour hotline 801-536-4123. 


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TriCounty Health, Serving For Health