(West Linn, OR) -- Some West Linn residents need to boil their drinking water. A weather-related equipment failure caused pressure in the lines to drop, potentially allowing bacteria into the lines. This only affects the Horton Pressure Zone. The City of West Linn has a map on their website. Residents need to boil water for two minutes before drinking, cooking, or brushing teeth. Throw away ice made with old water or automatic ice makers until the order is lifted.