Water issues resolved in Coulsdon
10/02/2015 17:00:00......Posted by Mario Creatura
We've just received this communication from Sutton and East Surrey Water. This letter is being delivered to affected properties in Grove Wood Hill, The Chase, Warwick Road and Howard Road:
YOUR TAP WATER CAN NOW BE USED IN THE NORMAL WAY (Tuesday 10 February)
Following our PRECAUTIONARY notice issued on the evening of Friday 6 February to all customers in Grove Wood Hill, The Chase, Warwick Road and Howard Road not to drink tap water, we can confirm your water supply is safe to drink.
There were no concerns with the water quality following the testing we carried out immediately after the planned ice pigging work on Wednesday and Thursday last week. However, a few reports we received on Friday referred to an unusual taste and odour in the water. Indicative tests available late on Friday showed that there may be traces of substances present in the water linked to the disturbance of the lining of the mains during the ice pigging operation.
The Company therefore decided to err on the side of caution and advised customers not to consume the mains water until we had carried out further tests.
At the same time, we also consulted with toxicological experts at Public Health England (PHE) regarding the likely cause of the taste/odour and the impact this may have on health. They confirmed that any short term exposure to hydrocarbons* released from the mains lining should not pose any health issues.
The full set of results confirm that the hydrocarbons were only detected at concentrations above the drinking water standard in samples taken immediately following the ice pigging work. Samples taken on Friday, Saturday, Sunday and Monday confirm that, despite there still being a taste and/or odour present in the water, it is now compliant with the drinking water standards for hydrocarbons.
The Company is therefore now in a position to retract the advice issued on Friday, and customers can consume the water and use it for all domestic purposes as normal.
We believe the taste and odour of the water is improving, and we are continuing to flush the mains through and carry out regular tests until the water meets the required quality. Bottled water continues to be available to customers, but will only be delivered on request. Please call us on 01737 772000 if you require a delivery.
We fully appreciate how disruptive and inconvenient this further interruption in your water supply has been over the past weekend. As gesture of goodwill, we will be sending a cheque for £30 to all those households affected to thank you for your continued patience whilst we resolve this situation.
Quality and Compliance Director
*Hydrocarbons - Polycyclic aromatic hydrocarbons (or PAHs) are organic compounds that can be present in the environment due to combustion processes. They are generally not very soluble and are not found in drinking water but they can be introduced due to the coal tar coating that used to be applied to the inside of iron distribution pipes to protect them from corrosion.