The Division of Water and Sewer Utilities (DWSU) is a member of "Miss Utility" (http://www.missutility.net/maryland/mdmemberutilities.asp) which is a member of a "One-call system" that allows a person to notify the DWSU of planned excavation or demolition by calling 1-800-257-7777 or 811, or via an interactive ticket request system.
Please note that Frederick County Division of Water and Sewer Utilities locators only mark Frederick County owned or operated water and sewer lines and do not mark private lines.