A clogged kitchen sink can bring your whole day to a stop. One minute you are rinsing dishes, and the next you have standing water, food scraps, grease, and a sink that will not drain. For homeowners in Belmont, Watertown, Arlington, Waltham, Cambridge, Newton, Lexington, and nearby communities, some kitchen sink clogs can be handled with a few basic steps. Others are a sign that the blockage is deeper in the drain line and needs professional equipment. Before you call a plum