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29
Oct

Residents of 34 properties in Nidderdale – including RAF Menwith Hill and Belmont Grosvenor School – have been told not to drink tapwater under any circumstances, while Yorkshire Water continues to investigate the cause of pollution in the area.
As we reported earlier this month, the utility company told people in about 1,000 homes to boil their tapwater before drinking it, after it found low levels of coliform contamination during routine sampling on October 10. Coliform bacteria comprise several genera, including E.coli.
That advice, which applies to properties in the HG3 2R, HG3 2Q, HG3 2J, and HG3 2L postcodes around Darley and High Birstwith, is still in place.
But now Yorkshire Water has identified a separate pollution ‘hot spot’ in the same area, has issued Do Not Drink advice, and is supplying affected homes with bottled water.
Ten days ago, we asked Yorkshire Water what the problem was, what action was being taken, and when the situation would be resolved. We received a response today.

Belmont Grosvenor School in Nidderdale.
A Yorkshire Water spokesperson said:
We have been working hard to trace the source of the coliforms have taken several proactive steps, including flushing the network, testing private supplies to rule out any contribution to the reading, and fitting non-return valves where needed.
During our investigation into the source of the coliforms, we’ve been conducting additional water sampling, as is normal protocol. These tests have identified elevated physiochemical anomalies in one area.
In accordance with regulatory requirements and our internal procedures, we have advised customers in that area not to consume the water under any circumstances. This is known as issuing Do Not Drink advice. This advice has been issued to 34 properties, and they have been informed directly.

Darley in Nidderdale.
But although Yorkshire Water has narrowed down its field of interest to a smaller area, it doesn’t not yet appear to have identified the source of the problem.
The spokesperson added:
We are continuing our investigations to determine the source of this secondary issue. This is a rural area and there are a number of properties that have both Yorkshire Water supplies and their own private borehole supplies. We are working to ensure that the Water Regulations are being met in these properties and that there are no cross connections between the two that could give rise to the issues experienced.
We understand this is frustrating for the customers impacted and we’d like to thank them for their patience while we carry out our investigations. We are continuing to support residents in the area with bottled water where required.
If customers are unsure whether they are impacted by either the Do Not Drink or Boil Water advice, they can check Yorkshire Water's website for more information.
This is a list of the properties affected by the Do Not Drink advice:
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