The Clearstream Wastewater Treatment System is an efficient extended aeration sewage treatment plant. This system, through aeration and clarification, provides a proper environment for aerobic bacteria and other microorganisms designed to convert incoming sewage into clear, odorless and organically stable water. Test results taken from applications consistently fall below the U.S. Environmental Protection Agency limits for direct discharge of treated effluent. 800/586-3656; www.clearstreamsystems.com.