News Video | Policy | GPs | Hospitals | Medical | Mental Health | Welfare | Search


Health warning for Ashley River / Rakahuri lifted

March 21, 2014

Health warning for Ashley River / Rakahuri lifted

The health warning issued last month for the Ashley River / Rakahuri at State Highway One Rangiora- Loburn Bridge has been lifted.

The Community and Public Health division of the Canterbury District Health Board has lifted its algal bloom health warning issued on February 13, 2014.

Recent water testing has shown the quantity of potentially toxic blue-green algae (benthic cyanobacteria) in the river has decreased and concentrations are now below levels of concern to public health.

Dr Alistair Humphrey, Canterbury Medical Officer of Health, says the public will be informed if concentrations increase and there is a risk to public health again.

Facts about cyanobacteria:
• The algae occur naturally but can increase rapidly during warmer months.
• If the water is cloudy, discoloured, or has small globules suspended in it, avoid all contact.
• Not all cyanobacterial blooms are visible to the naked eye and toxins can persist after the blooms disappear.
• Cyanobacterial concentrations can change quickly with changing environmental conditions (e.g. wind). If a health warning is in place avoid contact with the water.
• If a warning is in place, people and animals should not drink the water from the lake at any time, even boiled water.
• Exposure to an algal bloom can cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips. If you experience any of these symptoms visit your doctor immediately and please let your doctor know if you have had contact with lake water when there is a health warning in place

For further information visit

Or contact Community and Public Health on (03) 364 1777.


© Scoop Media

Culture Headlines | Health Headlines | Education Headlines


Howard Davis: Review - 'I, Daniel Blake' - Ken Loach's Bleak Masterpiece

'I, Daniel Blake' is a bleak masterpiece, a chilling and moving story of two people striking up an unlikely friendship under extremely adverse circumstances. It is both a polemical indictment of a faceless benefits bureaucracy that strips claimants of their humanity by reducing them to mere numbers, and a celebration of the decency and compassion of ordinary people who look out for one another when the state has abandoned them. More>>

Howard Davis: Review - A Girl Named Mo

Moana Ete brought her three-piece band A Girl Named Mo to Wellington's intimate and iconic Bats Theatre last week for a five-night residency. Each show was recorded and filmed live for the release of her debut album 'Platonic/Romantic' on Loop records later this year. More>>

For The Birds: Who Will Be Crowned Bird Of The Year?

The competition involves well-known and enthusiastic New Zealanders acting as ‘campaign managers’ for their favourite birds with many going to great lengths to get New Zealanders to vote for their chosen bird... More>>


  • Greening the Red Zone - Bird of the year heats up: kōtare concedes, backs kea
  • Image Out-Link - Giselle Clarkson on Twitter

  • Gordon Campbell: On Bob Dylan's Nobel (And The Surplus)

    So Bob Dylan has just won the Nobel Prize for… Literature? Wow. I’d be just as happy if he’d won for his work on particle physics (“One Grain of Sand”, “Simple Twist of Fate”) or got the Economics prize for his work on the theory of contracting (“Don’t Think Twice Its Alright”) ... More>>


    Scoop Review Of Books: Whose Goat Was That?

    Mysterious Mysteries of Aro Valley is a sharp, satirical and sometimes downright scary romp through and around that valley in ways that made me question the realities of the places I thought I knew so well. More>>


    NZ On Air TV Funding: More Comedy Comes Out Of The Shadows

    Paranormal Event Response Unit is a series conceived by Jemaine Clement and Taika Waititi as a TV spin-off from their highly acclaimed feature film What We Do In The Shadows. More>>


    Get More From Scoop



    Search Scoop  
    Powered by Vodafone
    NZ independent news