The cause of flooding in Spring Meadow, off Hempstead Road, Uckfield, after heavy rainfall has been established.
A CCTV survey has been carried out within the drainage system and the problem located.
East Sussex County Council says works should be undertaken in the next financial year.
During periods of heavy rain a manhole at the top of Spring Meadow has “severely overflowed”, according to minutes of a meeting considered by Uckfield Town Council on Monday (February 8).
Minutes from the Strengthening Local Relationships Liaison Meeting, held last month, said this was obviously not how the drainage system should operate and it would be dangerous during cold weather.
The minutes said: “There had been reports that this had only occurred since the all-weather pitch had been built on the Uckfield campus and East Sussex had connected the drainage to an East Sussex drain.”
Cllr Claire Dowling told the liaison meeting that the area to be rectified included 35 metres from the junction at Hempstead Road to Spring Meadow to reconnect a new system to make any future works easier to manage.
She said initial works at Hempstead Road had stopped the flooding but the second phase would be the junction at Spring Meadow.