Published on March 22, 2026
Toxic algae warnings have been issued for rivers in the Hutt and Wairarapa areas, prompting the Greater Wellington Regional Council to advise residents against swimming or allowing their dogs near the affected waterways.
The council identified specific stretches of the Hutt River and several locations along the Wairarapa rivers as having elevated levels of harmful cyanobacteria, commonly known as blue-green algae. This algal bloom can produce toxins that pose health risks to both humans and animals.
In light of these findings, officials are urging the public to remain vigilant and to adhere to the warning signs posted along the riverbanks. People are particularly cautioned to avoid contact with the water during this period, as exposure can lead to a variety of health issues, including skin irritations, respiratory problems, and gastrointestinal distress.
Pet owners have been specifically warned to keep their dogs leashed and away from the water, as ingestion of the toxic algae can be lethal to pets. Local authorities have recommended that dog owners find alternative areas for recreation away from the affected rivers until the warnings are lifted.
Monitoring efforts Wellington Regional Council are ongoing, and the situation will be reassessed regularly. The council is working closely with environmental agencies to keep the community informed about any changes in the water quality and associated health risks.
Residents are encouraged to report any visible algal blooms to the council to aid in ongoing monitoring and management efforts. Public health officials stress that awareness and caution are vital in ensuring the safety of individuals and their pets during this environmental concern.