The upper car park of Langney Point Car Park is currently cordoned off.
The site has been closed for several days now, allowing large generators into the area.
Eastbourne Buzz has contacted Southern Water for comment and a spokesperson said, “We have an electrical issue at our Langney Point Wastewater Treatment Works. Generators are onsite so our works can continue to operate as normal while specialists work to fix the issue as quickly and safely as possible.
“While this work is ongoing we have closed part of the car park on Prince William Parade to run the generators. The work should be completed by the end of this week at the latest, and we would like to thank our customers for their patience.”