Thursday 18 March 2021Media release2 minutes to read
Canterbury DHB’s Community and Public Health unit has lifted its algal bloom health warning issued for the Selwyn/Waikirikiri River at Glentunnel. This was issued on 18 November 2020.
Recent cyanobacteria surveys of the Selwyn/Waikirikiri River at Glentunnel has shown the cover of potentially toxic algae (benthic cyanobacteria) at the site has reduced and is now below levels that are of concern to public health.
Canterbury Medical Officer of Health Dr Cheryl Brunton says Environment Canterbury’s monitoring of the Selwyn/Waikirikiri River at Glentunnel has finished for this season and will resume next summer when there is increased likelihood of cyanobacteria growth.
A warning remains in place for ongoing algal blooms for:
Monitoring by Environmental Canterbury will continue until the warning can be lifted for this site.
Facts about cyanobateria:
For further information visit:
Or contact Community and Public Health on (03) 364 1777:
For more information about Mahinga Kai:
Page last updated: 19 August 2021
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