Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Zinc targeted by ARC as levels on rise in harbours

Zinc targeted by ARC as levels on rise in harbours

29 July 2005

Reducing zinc levels in Auckland harbours has been identified as a stormwater management priority by the Auckland Regional Council.

The ARC Stormwater Action team, set up in February to implement the Regional Stormwater Action Plan, has defined zinc, copper, sediment and water quantity as the biggest threat to aquatic life in Auckland’s streams, estuaries and harbours.

The Stormwater Action Plan was developed by the ARC to address increased pollution of Auckland’s waterways as the region grows.

SWA team leader Earl Shaver says zinc is a high priority contaminant on which to take action, because zinc levels in the harbour are increasing so rapidly.

“Many animals that live on the ocean floor cannot survive if zinc levels in sediment are too high,” Mr Shaver says. “Once animals such as cockles and pipis living on the sea bed die, a domino reaction occurs right up the food chain as fish like snapper and flounder run out of food to eat.”

Studies showed that the main source of zinc in Auckland’s waterways is the stormwater run-off from unpainted, galvanised roofs, particularly industrial roofs due to their size.

“The short-term solution to zinc run-off from roofs is to paint the roofs,” Shaver says. “We are going to be working with industry to get roofs painted, but ultimately we want to see zinc taken out of roofing materials altogether – if we can achieve this, then we expect to have zinc-free roofs in the Auckland region within the next 50 years.”

ARC Environmental Management Committee Chair Cr Dianne Glenn says all the signs point towards Auckland’s harbours reaching crisis point if action is not taken to reduce contaminants from getting into waterways.

“Imagine a future with no snapper, flounder and shellfish in the Waitemata and Manukau harbours,” Cr Glenn says. “This could be a reality if we don’t take responsibility for our actions now, by making the changes needed to protect the health of our iconic harbours for future generations.”


© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Scoop 3.0: How You Can Help Scoop’s Evolution

Entering into its third decade of operation, the Scoop news ecosystem is set to undergo another phase of transformation and evolution.

We have big plans for 2018 as we look to expand our public interest journalism coverage, upgrade our publishing infrastructure and offer even more valuable business tools to commercial users of Scoop. More>>


Foreign Affairs: Patrick Gower Interviews Jacinda Ardern

Prime Minister Jacinda Ardern says discussions have already begun on how to bring climate change refugees into New Zealand under a Pacific seasonal employment plan... More>>


Gordon Campbell: On The Centre Right’s Love Of ‘Nanny State’

You’d almost think it was 2005 again. That was a time when the rugged individualists of the centre-right were being beset by government regulations on the nature of light-bulbs, the size of shower heads, the junk food available at school tuck shops and other such essentials... More>>

Speaking Of Transport: Public Engagement On Wellington Scenarios

“Our work on possible solutions for Wellington’s transport future is ongoing, but has progressed to the stage where we’re ready to share our ideas with the public and seek their feedback to help guide our next steps...” More>>


Parental Leave: National's Time-Sharing Change Fails

National has proposed a change to the Parental Leave and Employment Protection Amendment Bill that would allow both parents to take paid parental leave at the same time, if that is what suits them best. More>>


Train Free Thursday: Workers Strike To Defend Terms Of Employment

"They signed up to these conditions a year ago when they got the contract for Wellington's rail services. Now they're trying to increase profits by squeezing frontline workers." More>>


Seclusion: Ombudsman Emphasises Importance Of Monitoring

Disability Rights Commissioner Paula Tesoriero says that while there have been changes to the Education (Update) Amendment Act 2017 to prohibit the use of seclusion, the report is an important reminder of the importance of regular monitoring of schools. More>>





Featured InfoPages

Opening the Election