From https://theriverstrust.org/sewage-map this looks to be the site of both the Exmouth treated sewage outlet into Lyme Bay and a sewer storm overflow.
In 2021, this sewer storm overflow spilled 49 times for a total of 628 hours, discharging into the Lyme Bay(c). – Owl
Anita Merritt www.devonlive.com
An unusual large structure has recently appeared in the sea by Devon Cliffs Holiday Park and will remain there for the next three weeks. The platform protruding out of the sea at Sandy Bay, believed to known as a Jack Up Barge, has been erected to enable South West Water to carry out ‘investigative work’ to upgrade the wastewater network in the area.
It is said to be part of a wider project to protect bathing water and the environment while reducing pollution. While the works are carried out people are still able to use the beach as normal.
This summer, some of Devon’s beaches have been closed for swimming following pollution concerns. In August and September, East Devon District Council issued a number of warning against visiting Exmouth beach due to pollution caused by heavy rain.
Such warnings have been issued multiple times since mid-August when the heat wave first gave way to heavy rain. Warnings have also been issued at Teignmouth Holcombe, Teignmouth Town, Sidmouth, Beer, and Wembury.
A spokesperson for South West Water said: “We are currently in the process of carrying out planned investigative work at Sandy Bay as part of a scheme to upgrade the wastewater network in the area. This initial work is expected to take around three weeks to complete and is part of a wider project to protect bathing water and the environment while reducing pollution.
“There should be no impact to customers as a result of this project and we will keep them fully updated on any further work.”
According to Exeter Port Authority, the Jack Up Barge ‘Mariner’ from Teignmouth moved to Sandy Bay last Saturday, September 17, during high water. It states the works will last approximately 20 days, ‘weather permitting’.