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

'Tea Break Bill' Passes: Gordon Campbell On Bad Labour Laws And Poor Safety

By co-incidence, one of the prime dangers of the government’s new employment relations law has been underlined by the release of the death and injury statistics among workers at New Zealand ports. These are highly profitable enterprises for the port owners.

The Port of Tauranga for instance, is expecting its current full-year profit to be between $78 million and $83 million and other ports are enjoying similar boom times – but they are also highly dangerous places for the people who work on or around the port premises. At the Port of Tauranga, there have been 26 serious accidents since 2011, and two deaths. More>>

 

Parliament Today:

No Charges: Outcome Of Operation Clover Investigation

Police have completed a multi-agency investigation, Operation Clover, into the activities of a group calling themselves “The Roast Busters”. The 12 month enquiry focused on incidents involving allegations of sexual offending against a number of girls in the Waitemata Police district and wider Auckland area... More>>

ALSO:

UNICEF Report: NZ Cautioned On "Stagnating" Child Poverty

An international report by UNICEF has found that child poverty rates in New Zealand have barely changed since 2008, despite similar sized countries significantly reducing child poverty during the recent recession. More>>

ALSO:

Funding Report: Two Pathways For Transport In Auckland

Commissioned by Auckland Council, the group was asked to investigate two possible pathways for raising $300 million per year ($12 billion over 30 years) to pay for the improvements needed to help fix Auckland’s transport system. More>>

ALSO:

Pay Equity: Equal Pay Win In Court Of Appeal

CTU: The Court of Appeal has made a historic decision paving the way for a substantial equal pay claim for aged care workers. More>>

ALSO:

Gordon Campbell: On The TPP Finishing Line, And Amazon’s Woes

If the Trans Pacific Partnership trade deal wasn’t such a serious matter, this would be pretty funny… More>>

ALSO:

TV3 Video: Three Die On Roads Over Labour Weekend

The official holiday period ended at 6am Tuesday, with three deaths on the roads during the Labour Day weekend. More>>

Employment Relations Bill: Govt Strains To Get Tea Break Law Through

The Government has been left with egg on its face - failing to get its much-vaunted, but hugely unpopular, meal break law passed in the first week of its new term, Labour spokesperson on Labour Issues Andrew Little says. More>>

ALSO:

Guns: Police Association Call To Arm Police Full Time

"The new minister gave his view, that Police do not need to be armed, while standing on the forecourt of parliament. The dark irony was that the interview followed immediately after breaking news of a gunman running amok in the Canadian parliament in Ottawa..." More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news