Planktonic cyanobacteria lake warnings

Lake Rotorua (near Kaikoura)


Long term water testing indicates that there is a regular bloom of the potentially toxic cyanobacteria Anabaena and/or Microcystis present.

There is a permanent health warning advising people to avoid contact with water at this lake.

Environment Canterbury continues to monitor the lake on a regular basis.

Lake Forsyth/Te Roto o Wairewa


The Community and Public Health division of Canterbury District Health Board has issued a health warning after potentially toxic blue-green algae (planktonic cyanobacteria) was found in Lake Forsyth/Te Roto o Wairewa.

People and animals, particularly dogs, should avoid Lake Forsyth/Te Roto o Wairewa until the health warning has been lifted.