The Hydro-Kinetic nitrogen-reducing wastewater treatment system from Norweco uses hydro-kinetic filtration designed to produce effluent results of 2.0 mg/L CBOD, 2.0 mg/L TSS and 7.9 mg/L total nitrogen. Developed to serve homes and small businesses located beyond city sewer service, the system uses extended aeration and attached growth processes to treat wastewater, and has nitrification-denitrification technology. The system successfully completed back-to-back NSF/ANSI Standard 40 and 245 tests without performing routine maintenance for 12 months. It quietly, efficiently and automatically pretreats, aerates, flow equalizes and filters wastewater, according to the maker. 800/667-9326; www.norweco.com.