LANCASTER – A boil water advisory is in effect for residents at 115, 119, 120, 125, 126, 135, 139, 141, 143, 145, and 147 N. Duke Street in Lancaster after a water main break. Typically, a loss of water pressure creates conditions that could allow contamination to enter the distribution system. Although there is no direct evidence that the water is unsafe, there is an increased chance that disease- causing organisms could enter the system. City officials say do not drink the water without boiling it first. Bring all water to a rolling boil, let it boil for one minute, and let it cool before using; or use bottled water. You should use boiled or bottled water for drinking, making ice, washing dishes, brushing teeth, and food preparation until further notice.