Langille Water Services also serves Ancaster, Arthur, Ayr, Beamsville, Binbrook, Burlington, Cambridge, Centre Wellington, Drayton, Dundas, Elmira, Erin, Fort Erie, Grimsby, Halton Hills, Hamilton, Harriston, Kitchener, Milton, Mount Forest, New Hamburg, Niagara Falls, Niagara-on-the-Lake, Palmerston, Port Colborne, Rockwood, St. Catharines, Vineland, Waterdown, Waterloo and Welland