River warnings

We monitor more than 100 popular recreational sites in Canterbury during summer. Health warnings are placed at sites where an increased risk of cyanobacteria or faecal contamination is present. Advisory notes may be present but are not an official public health warning.

Cyanobacteria can occur in any waterway, at any time, so it is important that you know what it looks like. Find out more about cyanobacteria in waterways and how you can protect yourself and your animals.

Faecal contamination poses a risk to health, check out LAWA’s swim smart checklist, to know what to check before you swim.

Waikirikiri Selwyn River at Glentunnel

16 November 2022
 

Te Mana Ora | Community and Public Health has issued a health warning for Waikirikiri Selwyn River at Glentunnel.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Waikirikiri Selwyn River at Glentunnel.

There are also other access points along the Waikirikiri Selwyn River at Glentunnel that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

People and animals should remain out of the waterways until the warnings have been lifted.

Find information about Mahinga Kai on the CPH website.

Waihao River at Gum Tree Road and Bradshaw Bridge

16 November 2022
 

Te Mana Ora | Community and Public Health has issued a health warning for Waihao River at Gum Tree Road and Bradshaw Bridge.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Waihao River at Gum Tree Road and Bradshaw Bridge.

There are also other access points along the Waihao River that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

People and animals should remain out of the waterways until the warnings have been lifted. Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality. 

Find information about Mahinga Kai on the CPH website.

Algal Bloom in Saltwater Creek (Timaru) near the SH1 bridge (Ōtipua)

19 October 2022
 

Te Mana Ora (Community and Public Health) has issued a health warning for Saltwater Creek, (Ōtipua), Timaru near the State Highway 1 bridge.

The warning follows potentially toxic algae (planktonic cyanobacteria) scums were observed. People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

Fish and shellfish can concentrate toxins and their consumption should be avoided. If fish are eaten, remove the gut and liver and wash in clean water.

There are also other access points along the Saltwater Creek (Ōtipua), Timaru near the State Highway 1 bridge that may have planktonic cyanobacteria present.

Environment Canterbury continues to monitor the area on a regular basis.

Find information about Mahinga Kai on the CPH website.