The Waterfront showrooms of Northern Plumbing Supply have been created with special attention to the latest trends in product and colors in the kitchen and bath. Showing an ever changing selection of the newest items available, our showrooms are unique environments catering to the casual shopper browsing for ideas or the committed customer looking for a sense of direction for their building or remodeling project. Showing an ever changing selection of the newest items available, our showrooms are unique environments catering to the casual shopper browsing for ideas.