NI Water has announced that it has brought forward by a week sewer investigations and minor repairs in Derry city centre.
It says CCTV investigation and cleaning works on the foul sewer in Foyle Street will now start on Wednesday, June 17, 2020.
The works had been planned to take place the following week on June 22, 2020.
NI Water say the works will take place for approximately four nights.
A road closure will be in place on Foyle Street between the junctions with Water Street and the Foyleside roundabout.
A diversion route will be clearly signposted during this time.
Access will be maintained for deliveries.
Some parking restrictions may also be in place throughout these works.
Working hours will be 7pm to 7am each evening/morning, with the road fully re-opened by 7am each day.