2016 November – Dubbo (New South Wales) – E.coli

2016 November – Dubbo (NSW) – E.coli

BOIL WATER ALERT: Dubbo water concerns continue | Updates

https://www.dailyliberal.com.au/story/4278593/water-concerns-continue-updates-photos-video/

Alert to remain in place over the weekend

Dubbo Regional Council wishes to advise that the Boil Water Alert in place in North Dubbo will remain over the weekend.

For the area served by the Myall Street Reservoir, which is North Dubbo, the Boil Water Notice will remain in place while reservoir cleaning and further sampling are undertaken.

Water should be boiled for at least one minute before consumption by humans or pets.

Do not swallow water when showering and do not use to prepare food that will not be cooked.

The water may still be used for watering the garden.

Although there have been improvements observed overall since testing began, Council will continue to work with NSW Health to ensure the system has returned to normal before the boil water alert is lifted…

‘Council did a good job’

A boil water alert for parts of Dubbo has angered residents this week, but not everyone is critical of Dubbo Regional Council.​

Contaminants were detected in the water supply last Thursday, with council issuing the boil water alert for North, Central and South Dubbo on Monday.

Speaking to the Daily Liberal on Thursday, Grapevine Cafe owner Tim Houghton was glad to see the boil water alert lifted for South and Central Dubbo.

But he didn’t blame council for the contamination, instead saying “they did a good job”.

“For me it wasn’t that big a deal. I just went out and bought bottled water,” he said.

“We bought bottled water in for our customers because we wanted them to feel confident it was safe.

“We knew it wouldn’t last forever.”

Thursday, November 10: Central, South Dubbo cleared

Dubbo Regional Council Director of Technical Services Stewart McLeod advises that the area affected by the Boil Water Notice has been reduced after extensive investigations and testing were carried out to identify and isolate the contamination.

“Council, in consultation with NSW Health, are pleased to say that the reticulated water supply system for South and Central Dubbo can now be declared normal,” Mr McLeod said.

The area of Dubbo still affected by the boil water notice.

“The Boil Water Notice is still in place for North Dubbo as inspections conducted on Wednesday afternoon at the Myall Street Reservoir discovered evidence of birdlife. Roosting birds and nests in reservoirs are known to cause contamination of this kind.

“For the area served by the Myall Street Reservoir, which is North Dubbo, the Boil Water Notice will remain in place while reservoir cleaning and further sampling are undertaken.

“Staff have been following anti-contamination procedures since last Thursday when the first failed water sample was received, with low levels of E. coli detected,” Mr McLeod said.

“After a second, low level read of  E coli came through over the weekend, the same actions were continued and an inspection of the reservoir took place.”

“Further sampling was conducted on Sunday, and a teleconference was held with NSW Health on Monday morning at which a Boil Water Notice was put in place while investigations continued,” Mr McLeod said.

“Although there have been improvements observed overall since testing began, Council will continue to work with NSW Health to ensure the system has returned to normal before the boil water alert is lifted.

“I would like to reiterate that the processes that have been followed by Council during this period reflect the best practice of the industry and will continue to do so, and we appreciate your patience as we work to rectify this situation.”

E.coli

Thermotolerant coliforms are a sub-group of coliforms that are able to grow at 44.5 ± 0.2°C. E. coli is the most common thermotolerant coliform present in faeces and is regarded as the most specific indicator of recent faecal contamination because generally it is not capable of growth in the environment. In contrast, some other thermotolerant coliforms (including strains of Klebsiella, Citrobacter and Enterobacter) are able to grow in the environment and their presence is not necessarily related to faecal contamination. While tests for thermotolerant coliforms can be simpler than for E. coli, E. coli is considered a superior indicator for detecting faecal contamination…” ADWG