The health warning issued for parts of Lake Taupo due to potentially toxic algal bloom has been lifted by the Medical Officer of Health.
Observation and water testing by Waikato Regional Council and Taupo District Council confirm the algal bloom has dispersed in the affected areas of the lake for the time being.
Gene testing of samples collected last Friday indicate the algae was not producing toxin then.
Medical Officer of Health Dr Jim Miller advised caution when enjoying any lake or river this summer.
"The current warm conditions may encourage algae growth, so it is always safest to check the water before you get in. If the water looks discoloured, smells unusual, if there is scum on the surface, or the water has green or brown particles suspended in it then it is best to avoid contact and swim or play somewhere else."
Regional council senior water scientist Bill Vant said staff would collect samples from 12 of the lake's bathing beaches weekly, and conduct visual inspections for signs of algal bloom, as part of a wider monitoring programme.
"With hot, calm conditions and the presence of plant nutrients, phosphorus and nitrogen in water, the conditions are right for blooms to occur in our region's waterways over summer.
"They can develop rapidly and unpredictably, and in some cases can produce toxins that are harmful for people as well as animals.
"We have staff on standby over the Christmas-New Year period to respond to any reports from the public of algal blooms in our region's waterways," Vant said.
"We'll also be continuing to work closely with our colleagues at Toi Te Ora Public Health, Taupo District Council and Tuwharetoa."
Tuwharetoa Maori Trust Board chief executive Topia Rameka was pleased with the latest results.
"It is good things can now return to normal and our whanau and community can continue to enjoy our moana.
