Dear Halton Borough Council,
‘Dead’ or ‘Blind’ Ends
‘Dead’ or ‘Blind’ Ends are caused by infrequent or intermittent use of outlets such as unoccupied retail outlets. Their length can vary from a meter to 20 or more.
‘Dead’ or ‘Blind’ Ends allow stagnation to occur increasing the likelihood of conditions that give rise to the increased activity of micro-organisms.
Runcorn and Widnes retail shopping areas (including the Runcorn Shopping City) have many vacant (some for years) small and large units. Catering and drink outlets are spattered about with these empty units surrounding them.
It has been proven that even small dead-ends can contain sufficiently robust colonies of bacteria to recolonise entire water systems even after disinfection. As such, there is no recommended maximum length for dead-ends.
It is well known that bacteria are major causes of diarrhoea transmitted through unsafe drinking water. What is less appreciated are viruses in these same drinking water sources and their impact on human health. Water-transmitted viral pathogens that are classified as having a moderate to high health significance by the World Health Organization (WHO) include adenovirus, astrovirus, hepatitis A and E viruses, rotavirus, norovirus and other caliciviruses, and enteroviruses, including coxsackieviruses and polioviruses. Also, viruses that are excreted through urine like polyomaviruses and cytomegalovirus can potentially be spread through water (also unwashed hands).
Is Halton BC responsible for the supply of potable water to the Halton population as required by Statutory Instrument 2016 No. 614, WATER, ENGLAND AND WALES The Water Supply (Water Quality) Regulations 2016
James A Owen
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