Signs developed to warn visitors about harmful algae in recreational water bodies

SCCWRP and California’s Surface Water Ambient Monitoring Program have developed a series of customized signs for water bodies vulnerable to toxin-producing algal blooms that are designed to raise awareness of the dangers of coming into contact with the water.

The warning signs, which were finalized and printed in April, inform visitors that algae in the water can be harmful to humans and kill animals, including dogs. Researchers based the signs’ designs on existing signage and guidance developed by the California CyanoHAB Network and the U.S. Environmental Protection Agency.

The signs, which are intended to be posted outdoors, will be distributed for free via an application process to California water-body managers that serve economically disadvantaged communities. For information about acquiring the signs, contact Dr. Keith Bouma-Gregson with the State Water Board.