Southern Water is working with the Environment Agency on its investigation of the problems at the firm’s Sea Road pumping station in West Sussex which led to the release of waste water into the sea last week.
The utility opted to release wastewater flows through an outfall 100 metres out to sea following an issue at the station in order to prevent widespread flooding of homes and businesses in Littlehampton.
Southern Water said the problem had been caused by a valve with a sheared bolt on an underground valve at the pumping station which was preventing the wastewater going through the works. The fault meant the sewer system was at risk of backing up and causing flooding in the town.
Southern Water put a team of ten people in place to set up a series of temporary pumps to bypass the damaged valve and allow flows to be transferred to the treatment works as normal while the valve was repaired.
The valve, which is four metres underground, has since been replaced and the site has returned to normal.