Update: Tuesday 10 July 2018

Minor remedial works are now being carried out on 23 above ground well heads, at seven pump stations, to enable these well heads to be signed off as secure.

We expect the works to be completed and inspections undertaken by the end of this month.

An isolation procedure has been agreed for the remaining below ground well heads which will allow chlorination to cease, early in August, at these pump stations:

• Burnside, Grampian, Thompsons and Farrington in the North West supply zone.
• Hills and Lake Terrace in the Central zone.
• Woolston in the Ferrymead zone.

Investigations have shown that ultra violet (UV) light disinfection is feasible and we are assessing the costs and benefits of using UV at a number of pump stations.

Preliminary design work has been completed for UV disinfection at Main Pumps, in Beckenham, in the central supply zone. A report will go to the next meeting of the Council’s Infrastructure, Transport and Environment Committee recommending the Council seek tenders for the work.

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If you have any questions, drop us a line at watersupply@ccc.govt.nz