Health warning regarding cyanobacteria (blue-green algae) bloom in Te Waihora/Lake Ellesmere removed

Medical Officer of Health Dr Ramon Pink has removed a health warning regarding Te Waihora/Lake Ellesmere because concentrations of cyanobacteria (blue-green algae) have decreased.

The risk of health problems as a result of contact with the water is now considered minimal, although drinking water from the lake is not recommended.

In February, Dr Pink said that due to increased amounts of cynobacteria found in Te Waihora/Lake Ellesmere, it was unsafe for drinking or recreational use.

Contact with water containing high levels of blue-green algal blooms can lead to symptoms such as allergic reactions, asthma, eye irritations, rashes and blistering around the mouth and nose, and/or abdominal pain, cramps and diarrhoea.

Further information regarding the current health status of Canterbury rivers and lakes can be obtained by contacting Community and Public Health on 03 3641777 or Environment Canterbury on 03 365 3828.

The Environment Canterbury website (www.ecan.govt.nz/swimming) is updated regularly with the latest information regarding recreational water quality.