It is safe to drink the water again in Aldergrove.
On Monday afternoon, Fraser Health lifted the boil water advisory.
A notice issued by the Township of Langley and the Fraser Health Authority on Friday said people should boil their drinking water for at least one minute before drinking because a "low level of coliform bacteria was detected at a water sampling point in a local neighbourhood."
The advisory applied to the municipal water supply east of 260 Street and west of 276 Street and north of 24 Avenue and south of 36 Avenue.
Further sampling and testing is being conducted, the advisory says.
People are advised to flush out all water fixtures for at least a minute, drain and flush all ice-making machines in refrigerators, and drain and re-fill hot water tanks set below 45 degrees Celcius.
To make sure tap water was safe, it was recommended that it be brought to a rapid, rolling boil for at least one minute before using it for drinking, making infant formula and juices, cooking, brushing teeth, washing raw foods and making ice, the notice said.