Southern Water has pleaded guilty at Medway magistrates’ court to five pollution offences linked to repeated sewage and chemical discharges in north Kent between 2019 and 2021. The Environment Agency charged the company for releasing untreated sewage, sewage waste, debris and diesel into inland waterways and coastal waters, affecting areas including Swalecliffe Brook in Whitstable and Faversham Creek.
One of the earliest incidents occurred in July 2019, when diesel leaked from a wastewater treatment plant after a generator failure, entering Swalecliffe Brook and flowing into the sea. Authorities warned the public to avoid contact with the contaminated water. Regulators said the incident highlighted inadequate operational controls and repeated failures in maintenance and response systems.
Further pollution events followed in March 2020, when untreated sewage was discharged into Faversham Creek over several days after pump failures, and again into Swalecliffe Brook, with contamination spreading to coastal waters. Investigators found sewage debris flowing beyond treatment plant boundaries and into surrounding land and waterways.
Additional incidents in October 2020 and August 2021 showed similar patterns, with sewage and waste repeatedly escaping from treatment facilities and entering natural watercourses and the sea. In one severe case, around 70 dead fish, including eels, were found in Swalecliffe Brook, prompting local authorities to issue swimming warnings at nearby beaches due to water quality concerns.
The Environment Agency stated that the pollution incidents were largely preventable and pointed to repeated operational failures and inadequate safeguards. It also confirmed that Southern Water had previously been fined £90 million for widespread illegal sewage discharges, underscoring ongoing regulatory concerns about the company’s environmental performance.
Southern Water admitted all five charges under environmental permitting regulations. Sentencing is scheduled to take place at Medway magistrates’ court at a later date, while regulators continue wider enforcement action against water companies responsible for pollution incidents across England.
