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.
Te Waihora/Lake Ellesmere
Water testing continues to show that there is a bloom of the potentially toxic cyanobacteria Picocyanobacteria. At present there are no blooms of the more conspicuous scum forming toxic taxa Nodularia or Anabaena.
The Canterbury Medical Officer of Health, Dr Alistair Humphrey, has issued a health warning and advises people to avoid contact with water at this lake until further notice.
Environment Canterbury will continue to monitor the lake and the public will be advised when the algal bloom has cleared.