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Juas Water Treatment Works Refurbishment
The refurbishment of Juas Water Treatment Works in the North of the island is now under way aiming to save £5 million over the next 25 years as part of a new water treatment strategy, which in total is forecast to save £10 million of expenditure over the same period.
The works are being carried out by a team of six Guernsey Water staff - three working full time on site, two of which have qualified through Guernsey Water apprenticeships.
This page will follow the team and their work during the refurbishment process.
Juas Water Treatment Works
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This infographic is optimised for use on larger screens but you can still explore the treatment works by tapping on the individual elements in the illustration below. For an optimal experience, we recommend browsing with a larger screen.
Washwater Recovery Tanks
Particles captured in the filter beds will be periodically washed out, this washwater, containing the particles, will then be gravity fed into three of the site's washwater tanks, where the sediment will settle out to form a layer of sludge. The sludge will then be pumped into the sewer network and the remaining water returned to the quarry for future use.
High Lift Pump House
Home to the pumps which will feed treated water into our distribution network. Clean water from the filter beds will flow to the highlift house where it will be treated with ultraviolet light for disinfection and a final dose of chlorine. This ensures wholesome water quality is maintained as it travels through the distribution network to customers' homes. Water samples are taken on a regular basis at this point.
These act as a reserve supply of water within the distribution network to accomodate times of peak water demand.
Random samples are taken from our customers' homes throughout the year to ensure that water quality meets our standards. 1236 individual tests were conducted in 2017
November 2018 - Flow and Turbidity meters in place
Our new flow and turbidity meters have now found themselves at home in our control room
November 2018 - Air blower in place
This unit is the site's air blower, it will be utilised for air scouring of the filter beds.
November 2018 - Clarifier bed testing
The clarifier beds, filled with water for some water tight testing!
November 2018 - Control panels live
Our pump control panel all lit up and ready for action. This control panel will allow us to operate various pumps locally on site, or remotely from our control room at Brickfield house via SCADA
September 2018 - Pump control Panels Installed
A view of our pump control panels, now all fitted in place in the site's control room
August 2018 - First media layer installed in the filter beds
The gravel media layer of the filter bed laid, the refurbished pipework can be clearly seen in this shot. The next stage of the filter bed works involves the installation of the sand and anthracite media layers.