The health warning in place since early January for Lake Ohakuri, downstream from Orakeikorako on the Waikato River, is lifted.

'Results of regular water testing performed by Environment Waikato confirm that the algal bloom has subsided,” says Public Health Medical Officer of Health Dr Phil Shoemack.

Despite the warning's lifting, Dr Shoemack is advising the public should always be alert for signs of algal blooms in any of the lakes on the Waikato River.

'If the lake is discoloured, smelly, or has green or brown particles suspended in it then stay out of the water.

'Cyanobacteria, otherwise known as blue-green algae, can multiply rapidly at any time and they always have the potential for toxin production with these toxins being potentially harmful for people as well as animals.”

Environment Waikato is continuing lake monitoring on a regular basis through summer.