A pilot pesticide monitoring project was conducted by the Maryland Department of the Environment (MDE) during calendar year 1992. Surface waters from three regions of the State were monitored for the presence of 14 pesticides. The list of analytes was compiled from the results of a risk screening effort by MDE, a collaborative project with the U.S. Fish and Wildlife Service (USFWS), and recommendations from the Chesapeake Bay Program (CBP) Toxics Sub-Committee, Alachlor, adrin, atrazine, carbofuran, chlordane, chlorpyrifos, cyanazine, dieldrin, diflubenzuron, fenvalerate, metolachlor, permethrin, simazine, and toxaphene were the 14 pesticides on the analyte list. Eleven sites were selected as sampling stations. All except one (the control) were judged to be probable recipients of nonpoint source agricultural or urban run-off.