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

 


Water quality and cyanobacteria monitoring

15 November 2012
MEDIA RELEASE

Water quality and cyanobacteria monitoring at Canterbury swimming sites

Environment Canterbury will begin water quality monitoring at 51 freshwater and 45 coastal swimming spots – from Kaikoura to the Waitaki catchment – starting next week.

This summer Environment Canterbury staff and three university students – two in Christchurch and one in Timaru - will take the water samples and keep an eye out for cyanobacteria mats each week for 15 weeks. The results are updated weekly on the Environment Canterbury website - http://maps.ecan.govt.nz/WaterQuality/

The best water quality for swimming and other water recreation, showing as blue spots on the swimming water quality maps, are Gore Bay, Motunau Beach, Leithfield Beach, Woodend Beach, Waikuku Beach, Spencerville Beach, Taylors Mistake, Pigeon Bay, Lake Hood at main swimming beach, Lake Clearwater, Lake Camp, Lake Opuha at the dam boat ramp or recreation reserve, and Timaru Yacht Club.

Many other sites are graded as good for swimming with a green spot on the map.

However, even good swimming sites should be avoided during or shortly after heavy rainfall, which can wash contaminants off roadways, gutters and farmed land into the river or sea and temporarily affect the water quality.

At the freshwater river sites the council will also be on the alert for mats of cyanobacteria (blue-green algae) species such as Phormidium, which can produce toxins that are dangerous to humans, stock and dogs. There is a greater risk of potentially toxic cyanobacteria mats occurring during periods of low river flow and warm temperatures. People are warned to look out for areas of rivers where black cyanobacteria mats are growing or forming scums. They should be particularly careful to keep children and dogs out of these waters and avoid swimming in heavily infested areas. Mats can be attractive to dogs due to their odour and they can cause serious illness or death if licked or ingested.

At sites where cyanobacteria mats are found, a detailed survey will be undertaken by Environment Canterbury staff. The survey results are compared to national guidelines and if trigger values are exceeded a warning is issued for a site. A warning will be posted on http://ecan.govt.nz/services/online-services/monitoring/swimming-water-quality/Pages/river-warnings.aspx and a warning sign erected at the site. At sites where cyanobacteria mats have occurred in the past there will soon be information signs telling people what to look out for.

For more information: Lesley Bolton-Ritchie, Environment Canterbury Coastal Water Quality Scientist – 0272810822 or Michele Stevenson, Environment Canterbury Water Quality Scientist (rivers and lakes) 0275497703 or David Kelly Environment Canterbury Water Quality Scientist (re cyanobacteria) 0275497704

For information on water quality for swimming go to
http://ecan.govt.nz/services/online-services/monitoring/swimming-water-quality/Pages/check-swimming-water-quality.aspx

http://www.facebook.com/canterburyrecwater


For information on cyanobacteria go to
http://ecan.govt.nz/services/online-services/monitoring/swimming-water-quality/Pages/river-warnings.aspx

http://www.facebook.com/canterburyrecwater


Background

Water samples are sent to Hill Laboratories in Christchurch for testing. Laboratory staff test the weekly water samples for faecal indicator bacteria (E. coli in fresh water and enterococci in sea water) which are found in faecal material and can indicate the presence of sickness-causing bacteria, viruses and protozoa.

Results go back to the monitoring officer, who reports results that are above trigger values specified by the national guidelines to the relevant district council and Community and Public Health protection officers. It is the district or city council’s responsibility to put up signs when required, warning people that a beach or river is not suitable for swimming.

The coloured grades shown on the website map are based on up to five years of monitoring data and a risk analysis of possible nearby pollution sources. The overall grades are set in November each year and do not change during summer, although the weekly indicator bacteria readings vary from week to week depending on local conditions such as heavy rainfall.

The swimming water quality map is at http://maps.ecan.govt.nz/WaterQuality.

Website users are encouraged to explore the website for more information on how and why we monitor recreational water quality, including cyanobacteria blooms in rivers and lakes, at http://ecan.govt.nz/services/online-services/monitoring/swimming-water-quality/pages/default.aspx


ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Syriza Win Greek Election: The Rumblings Of The Left

Binoy Kampmark: The left – and by this, the genuine, progressive, unmanagerial left – is getting noisy. The Greek elections are upon us, with the similar challenges being played out from 2012. There are fears of Grexit – a heavy breathing departure from the eurozone that will do everything to rattle the central currency mechanism that has been taking a battering...

Much of this has been triggered by the moral outrage and political response of the left grouping centred on Syriza of Greece. The movement has been said to have similarities to a new constellation of power in Spain, led by Podemos. Syriza, led by Alexis Tsipras, has promised to renegotiate the terms of Greece’s 240 billion euro international bailout arrangements. Both parties point out to the distance between elector and the elected, a creeping death of democratic accountability in favour of market propriety. More>>

 

Transport: Auckland Looks To Light Rail

The Board of Auckland Transport has called for an investigation into a light rail network, which could relieve traffic congestion on some of the region’s busiest roads. This stems from work in 2012 (the City Centre Future Access study) which responded to a government request to develop a robust and achievable solution for access to the CBD. More>>

ALSO:

RMA: Smith's Claims Don't Match Evidence - Greens

The Motu group’s research into the impacts of planning rules looked at the costs related to housing development but not the benefits of environmental protections and does not recommend significant changes to the RMA to reduce the cost of new house builds. More>>

ALSO:

Gordon Campbell: On The Similarities Between John Key And David Cameron

For years now, David Cameron has been the closest available thing to a mentor/analogue to our Prime Minister, such that Key watchers could be interested in an analysis of Cameron that appeared in the British press over the Christmas break. More>>

Gordon Campbell: On Ian Fletcher Resignation & GCSB’s New Role

It may well be that after being shoulder-tapped in Queensland for the GCSB job, three years of living in Wellington has been enough for Fletcher and his family, given that the pending review of the GCSB would have required an even longer commitment from him. Three years of Wellington’s weather is enough for anyone... More>>

ALSO:

Ian Apperley: $10m Or $100m For New Wellington Council IT System?

I feel a Tui Billboard coming on. I commented the other day that it looked like the Council’s Ninth big project was a potential $100 million plus... The Mayor has responded: “I am reassured by the Chief Executive and by Anthony Wilson that the proposed budget is in the region of $10 million.” More>>

ALSO:

Southern Ocean:
Navy Intercepts Illegal Fishing Vessels

Foreign Minister Murray McCully today put illegal fishing vessels operating in the Southern Ocean on notice and vowed to take action against their owners. “As part of a multi-agency operation, the HMNZS WELLINGTON has intercepted two vessels claiming to be flagged to Equatorial Guinea, fishing illegally in the Southern Ocean.” Mr McCully says. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news