07/01/2026
Two new health warnings are now in place for:
⚠️Lake Rotokaeo (cyanobacteria/blue-green algae)
⚠️Lake Puketirini (bacterial).
In the Waikato, cyanobacteria health warnings are also in place for Lakes Kainui, Arapuni, Rotokauri, Waikare and Ngā Roto.
Entering water that has visible white floaties, is an off green or off blue colour could be a sign of cyanobacteria (toxic algae) and can make you and dogs feel really unwell 🤢 Even if there are no signs around, if the wai (water) doesn’t look right, please don’t go in.
If you have been in the water:
👉 shower off with soap and lots of water as soon as possible (even without symptoms)
👉 change out of wet clothing immediately
👉 clean paddles, waka/kayaks and life jackets with fresh water (not lake water)
If anyone is feeling unwell after swimming or paddling, please call your GP, local health provider or Healthline on 0800 611 116 as soon as possible.