The tanks will have their contents pumped out at night
A sewage outfall on Guernsey's south coast is a step nearer to closing with the installation of new storage tanks.
Two 8.5m (28ft) deep tanks are being installed at Creux Mahie and four more are to follow in the summer.
The tanks will store sewage discharged at two points at Creux Mahie and that will be pumped to the main pumping station at Belle Greve overnight.
The works are part of a £2m long-term plan to divert all the sewage from the west of the island.
The current facility Creux Mahie, built in the 1960s, discharges waste water from homes in the western parishes through a short sea outfall below the nearby cliff.
The new tanks will be part of equipment diverting the flow to the more effective long sea outfall at Belle Greve, the Public Services Department said.
The Creux Mahie work is scheduled to be completed in October.