03 May 2023
A new bridging Liquid Waste Strategy (2023-26) has been published by the Minister for
Infrastructure. It describes potential projects to upgrade the existing sewerage network to
support population growth and the additional homes indicated in the bridging Island Plan.
The previous Liquid Waste Strategy was released in 2013 and led to the construction of the
new Sewage Treatment Works at Bellozanne, which is now nearing completion. It will have the
additional capacity required for future population growth, however the total flow that can
reach it will be constrained by the wider network’s capacity.
Much of the existing network was built in the 1950s, or earlier, and was designed for a
population of half the current number of residents. The network, as a whole, is already at its
limits in a number of areas and therefore needs to be reinforced and upgraded before the
flow and load from new homes can be accommodated.
The new 220-page bridging Liquid Waste Strategy considers the immediate needs for 2023-
2026, and then beyond this in the medium-term to 2035. It identifies schemes to upgrade the
infrastructure in key locations including First Tower, Le Dicq, Maufant, West Park, Bonne Nuit,
St Brelade, Greve de Lecq, Maupertuis, St Peter, Beaumont, Grouville and Le Hocq.
The Minister for Infrastructure, Deputy Tom Binet, said: “We know that under the bridging
Island Plan, many thousands of new homes will be built in Jersey over the next few years, and
we need to ensure the system can deal with that additional demand.
“The network that takes liquid waste away from our homes is often taken for granted and only
noticed when something goes wrong. The Island has been well served by the current sewerage
infrastructure, but it is ageing, and we now need a significant investment for the future of the
“I am discussing, with the Treasury Minister, the best way of financing this work to prevent
major failures in the network, and support our wider aims for housing, and this will need to be
considered as part of the upcoming Government Plan process.”