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.