Toxic algae in Paraparaumu's Awatea Lagoons

Toxic algae in Awatea Lagoons.

A picturesque and popular waterway in Paraparaumu has tested positive for a naturally occurring toxic algae which can make people sick.

Awatea Lagoons, near Mazengarb Rd, has a blue-green algae called cyanobacteria anabaena around the edge of it, mainly near the inlets and outlets.

"We're advising people not to swim in the lagoon, drink the water or if you're taking your dog for a walk in the area, to please make sure it's on a leash," Kapiti Coast District Council parks and recreation manager Alison Law said.

"Dogs, as we know, love to scavenge and play near water so are particularly susceptible to poisoning from toxic algae and the last thing we would want is for anyone or a pet to get sick."

She said signage had been put up at the site advising people using the walking track around the lagoon of the presence of algae.

"We do monitor the lagoon and this type of algae tends to appear when temperatures are warmer and water levels are low or remain stable for some time.

"We're continuing to keep an eye on things in the meantime and with rain forecast for this week, we're hoping this will help flush the algae away."

What to look out for:

* Toxic algae is usually a dark green/brown or black colour and in waterways forms blooms, which can appear as a thick mat attached to rocks or beds.

* Swallowing water containing the algae can lead to vomiting, diarrhoea, abdominal pain, cramps and nausea. Skin contact can cause irritation to the skin, eyes, nose and mouth.

* If people are concerned about any illness following contact with water in the Awatea Lagoons or any other waterway in the district, they should talk to a doctor.

* If your pet is showing symptoms, visit a veterinarian.

More information about toxic algae can be found at www.gw.govt.nz/toxic-algae