A exclusion zone will be been set up on part of the beach in St Aubin's Bay as drainage work gets underway.
A new surface water pipe and outfall is being created to separate surface water from the sewer system.
The project, by the government's Infrastructure and Environment department, is expected to go on until mid-October.
It includes providing for a new surface water connection to a new hospital at Overdale.
During the works, some some parking in Layby 2 on Victoria Avenue will be suspended, and part of the beach blocked off. Signs and water buoys will be in place, and the public is being asked to observe them.
Cyclists using the promenade might be asked to dismount during some of the work.
Work to clad the outfall with granite will continue after October.
Pharmacists get access to patient medicine records
'Growing concern' about 'pace' of minimum wage increases
Beloved part of Jersey Zoo family dies
Man who sexually abused young child in Jersey jailed for life
£1.5M needed for new respite home at Mont a l'Abbe
PHOTOS: New CAMHS home 'a warm and welcoming environment'
Plans explored to restore air link between Jersey and Normandy
Appeal after man punched outside St Saviour's Court
