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


Lower Waitaki Plains Aquifer bores update

A water quality test conducted by Otago Regional Council on 18th September 2018 has shown elevated levels of E. coli in a bore feeding from the Lower Waitaki Aquifer.

The below map identifies the bore (bore reference J41/0317).

The results of that test determined elevated E.coli levels at 63 MPN / 100 ml. The recommended level for safe drinking water is that there should be less than 1 MPN / 100 ml. Results from faecal source tracking, showed a high probability the source is cattle (please note this does not exclude sheep). There was no human faecal source detected.

Letters have been sent containing a recommendation that Lower Waitaki Plains residents who source their drinking water from private bores, should assume their source water is contaminated unless they have effective disinfection in place. Residents should expect to receive them this week. The letter will also contain a previously shared brochure on how to protect their bore water.

The brochure is also available on the ORC website here: https://www.orc.govt.nz/media/5634/bore-brochure.pdf

The Otago Regional Council has increased its sampling from quarterly to monthly, with faecal source tracking built into the monitoring programme. The next water testing results from the Lower Waitaki Plains Aquifer are expected this week. This will show if the E. coli spike is still prevalent. If it is, it will be further tested for faecal source tracking to determine the source.

In the interim, Public South Health have been notified of the current results.


How long has this been a problem for?

E. coli concentrations exceeding 1 cfu/100ml (colony forming units) have been detected in some of the bores monitored by the ORC (SOE network) since 1999. Although ORC has been talking informally with the community about this for some time, it was determined recently that it was important to formally notify the community of the ongoing risk.

What is E. coli, and what are the potential effects of exposure?

E. coli is a subset of faecal coliforms (bacteria originating in the bowels of warm-blooded animals). E. coli indicate likelihood presence of pathogenic bacteria from the same source. Exposure can have serious and long-term effects and is especially dangerous for children, older persons and people with compromised health. Gastroenteritis symptoms usually develop within 12 to 18 hours and include severe abdominal cramping, vomiting, and diarrhoea.

How can I be sure of safe drinking water?

The only way to be certain of having safe drinking water from the lower Waitaki aquifer is to have drinking water treated. That means disinfection, using chlorination, UV, ozonation, boiling or filtration.

© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Crowdsale And Crowdfunding Campaign: Help Create The Future Of Independent News

Two weeks to go! The Scoop 3.0 plan aims to create NZ’s first community-owned, distributed news and media intelligence ecosystem in 2019. We believe this ScoopPro media monetisation approach can be scaled and spread globally to support local and independent news efforts in regional New Zealand and around the world.

Scoop is an ecosystem, it would not exist without those who contribute to it, read it and rely on it for professional media purposes. Generous past support from this ecosystem has enabled us to come this far in developing our business model. Support our PledgeMe Campaign>>


14/11: Two Years’ Progress Since The Kaikoura Earthquake

Mayor John Leggett said it was a day for reflection, but also a time to recognise the work by many people to support progress towards recovery made across Marlborough since November 2016. More>>


Pike River: Mine Drift Re-Entry Plan To Proceed

“I’ve decided the Te Kāhui Whakamana Rua Tekau Mā Iwa - Pike River Recovery Agency, recommended course of action to enter the drift, using the existing access tunnel, is by far the safest option,” said Andrew Little. More>>


Appointments: New High Commissioner To Australia Announced

“Dame Annette King needs no introduction given her long running career as a parliamentarian where she has previously held a number senior Cabinet portfolios, including Justice, Police and Health. She also was Parliament’s longest serving female MP with 30 years’ service,” said Mr Peters. More>>


Two Years Since Kaikoura: Silvia Cartwright To Lead Inquiry Into EQC

“The inquiry will be the first of its kind under the Public Inquiries Act 2013 and will have all the powers of a Royal Commission, be independent of Government and make its report directly to the Governor-General. More>>


Gordon Campbell: On The Royal Commission Into Child Abuse

Obviously, it is good news that the coalition government has broadened the scope of its Royal Commission into the abuse of children, beyond its previous focus on children in state care. More>>


Cases Delayed: Court Staff Refuse To Handle Sentencing Papers

Dozens of court cases have reportedly been delayed, as court staff escalate industrial action at two Auckland courts by enforcing a ban on handling sentencing papers. More>>


Education: Primary Teachers Rolling Strikes

RNZ Report: More than 100,000 primary school students in Auckland will be home from school today as teachers and principals walk off the job for the second time this year. It's the start of a week of rolling one-day strikes around the country, after the collapse of contract negotiations last Thursday. More>>


"Process Was Sound": Inquiry Into Haumaha Appointment Released

The Inquiry’s purpose was to examine, identify, and report on the adequacy of the process that led to the appointment. It found the process was sound and no available relevant information was omitted. More>>





InfoPages News Channels