WEST DES MOINES - The Southwest Polk Water Service has lifted a boil advisory for an area near Walnut Woods State Park in southwest Polk County.
Two consecutive sets of water samples tested negative for bacteria, so the boil advisory was lifted Tuesday morning.
The boil advisory began after a power loss caused a drop in water pressure Saturday night. Loss of pressure can allow bacteria to enter the water distribution system.
About 400 people east of the state park were affected, including connections in the state park, Scheifflin Estates, Bonnie Lea Acres, Julian Estates, Sylvan Rill and Sunset Heights housing developments.