Jet is a provider of advanced onsite wastewater treatment systems throughout the world. The Jet residential wastewater treatment plant is the cleaner, lower-odor, lower-maintenance alternative to traditional septic systems.Jet Inc. has designed dependable residential and commercial wastewater treatment systems since 1955, leading the industry with innovative design, value, and service. Field proven in thousands of global installations for hospitals, housing subdivisions, food processing plants, factories, apartments, and embassies, our plants successfully transform wastewater into clean, clear, odorless effluent.