The City has cautioned far south residents to boil tap water before drinking it or using it to wash fruits and vegetables that will be consumed raw.
In a statement, the City said the areas included Noordhoek, Redhill, Simon’s Town, Sun Valley, Kommetjie, Ocean View, Scarborough, Masiphumelele and Glencairn.
“This follows routine sampling results showing that the water quality is not compliant with national water quality standards (SANS 241),” the statement read.
It stated that investigations are under way to determine the cause, and that the affected pipelines are being flushed and disinfected.
“Tap water should be boiled for one minute and left to cool naturally.”
Residents that are unable to boil their water can mix one teaspoon of unperfumed household bleach in 20 to 25 litres of water and let it stand for at least two hours before using it.
Purified water should always be stored in clean, covered containers.
Further testing would be done to ensure the highest and safest quality water was in circulation, the City said.