A health warning is in place for Okawa Bay at the western end of Lake Rotoiti.
The health warning is based on water test results and visual observations provided by the Bay of Plenty Regional Council which indicate an extensive algal bloom throughout this area of the lake.
Contact with water affected by blooms of blue-green algae can cause asthma and hayfever attacks in some individuals. Contact with the blue-green algae can also cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.
People and their pets should avoid contact with the water