On Wednesday afternoon Bega Valley Shire Council said the advice was based on the most recent river turbidity level and council's testing of the supply system.

Water from the tap no longer needs to be boiled for any purpose.

The boil water notice for the water supply system was introduced on August 6 as a precautionary measure after NSW Health provided advice on elevated turbidity levels in river water following catchment rainfall.

Council's manager of water and sewerage services Chris Best said the river water had continued to clear since the last rainfall to a level where NSW Health and council were satisfied the water supply system can be managed safely without the need for boiling water.

The Brogo-Bermagui water supply system is an unfiltered water supply system with water disinfected using chlorine only.

"A water filtration plant will reduce the need for boil water notices in the future," Mr Best said.

"We are in the process of designing a water filtration plant for construction in 2021."