More than 300 West Virginia American Water customers in Boone County have been told not to use their water, for any purpose, after a contaminant backed up into the local water supply. The water company believes the problem is a bathroom cleaner from a local church's bathroom, according to a news release from the water company. The customers affected are in the Camp Creek and Julian areas, including those on Camp Creek Road, Julian Road, Little Horse Creek, Horse Creek Road, White Road, Betsy Lane, Ferrell Drive, Miller Road, Nancy Dolin Road, Herman Dolin Hollow Road, White Buck Road, Calvin Smith Road, Big Pinnacle Bridge Road, Wash Bridge Road and customers along U.S.