Irish Water says the boil water notice remains in place for customers supplied by the Whitegate Public Water Supply.
The notice was issued to protect the health of up to 9,500 customers due to increased turbidity in the raw water source.
Areas impacted include Aghada, Churchtown, Ballycotton, Saleen, Shanagarry, Ballinacura and areas of Cloyne.
Irish Water says drinking water experts from Irish Water and the County Council are working to rectify the turbidity issues at the treatment plant and lift the notice as quickly and as safely as possible, in consultation with the HSE.
Irish Water is also progressing a permanent solution to address the issues in the long term.
This involves a major upgrade of the water treatment plant that will ensure a safe, reliable drinking water supply to customers on the Whitegate Regional Public Water Supply now and into the future.
