Uisce Éireann says it is continuing to work to lift a Boil Water Notice in place in Culdaff.
Following a deterioration in the raw water quality, the notice was issued in mid-August to protect the health of approximately 1,300 customers on the Culdaff Public Water Supply.
The utility is continuing to monitor the supply and review the results.
People in the locality are urged to boil their water before use until further notice.
