Red alert level warnings are in place for theRuamāhanga River, Waipoua River and Te Awa Kairangi (Hutt River) due to toxic algae levels.

Greater Wellington advises people not to swim or let their dogsnearthe water at the following sites.

• Te Awa Kairangi (Hutt River) at Silverstream due to high levels of toxic algae and detached mats starting to form.
• Waipoua River at Colombo Road due to moderate levels of toxic algae and widespread detached matsaccumulating at the river’s edge.
• Ruamāhanga River at Double Bridges and Te Ore Ore due to moderate levels of toxic algae and the presence of detached matsaccumulating at the river’s edge.

Toxic algae is a neurotoxin that acts like snake venom, which can be very harmful to humans and lethal for dogs if ingested.Even a small amount of toxic algae, the size of a 50-cent piece, can be enough to kill a dog.

If you think your dog has swallowed toxic algae, or it shows signs of lethargy, muscle tremors, fast breathing, paralysis or convulsions, should go to the nearest vet immediately.

People who have been in contact with toxic algae and are feeling unwell, should see a doctor or ring Healthline on 0800 611 116.

People are advised to check the LAWA website for toxic algae warnings and alerts before visiting rivers in the Wellington region.

Greater Wellington is currently monitoring popular river swimming spots for toxic algae on a weekly basis.

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