View all publications

Appendix 6: Health warning sign for planktonic cyanobacteria

The following is an example of the text for a health warning sign for planktonic cyanobacteria. A health warning sign should provide enough information to inform the public of the potential health risks and enable them to make an informed decision. It should be clearly dated to inform the public when the warning was issued.

Toxic cyanobacteria (blue-green algae) health hazard

All persons are warned that potentially toxic cyanobacteria are present in this water body and may affect the health of persons and animals coming into contact with the water.

Warning signs

Swimming, sailing, water skiing, or any other activity involving body contact with the water may cause skin and eye irritation.

Drinking or accidentally swallowing water may result in illness.

Toxins can accumulate in the internal organs of fish and shellfish. Remove the internal organs of fish before cooking and avoid eating shellfish.







<Name of organisation>