Commercial wastewater treatment plants from Jet Inc. are modular in design, can treat flows up to 300,000 gpd and allow for phase build-out. This makes it possible for motels, shopping centers and service stations to be constructed along interstate highways away from municipal treatment systems. Subdivisions can be developed beyond sewer lines. Factories can be erected in rural areas. The plants treat wastewater through an aerobic digestion process that enables microscopic living organisms to transform wastewater into a clear, odorless liquid. 800-321-6960; www.jetincorp.com.