The results of water samples taken from Lake Tarawera have come back clear.
On February 2, Bay of Plenty Regional Council said it had received a number of reports of possible algal blooms and water discolouration affecting parts of the lake.
Algal blooms can be caused by potentially toxic cyanobacteria (also known as blue-green algae).
At the time, the council urged users to be vigilant.
The results of samples taken on February 5, 13 and 16 have now been released and show normal results.
The regional council took the samples from the middle of Lake Tarawera and Te Rata Bay.
If water looks discolored, has an unusual odour or visible algae are present it is best to avoid any contact with the water and swim somewhere else. Water should also not be taken for drinking purposes from any part of the lake that looks like it may be affected by algal blooms or is discoloured.
For more information about cyanobacteria blooms and health see https://www.ttophs.govt.nz/vdb/document/43.