If you mean a packaged wastewater treatment system, you could contact Chief Industries in Grand Island, Nebraska. They make the Ecolo-Wastewater Treatment System that is designed for small cities and villages including subdivisions. Their system is pre-fabricated, takes up much less space than a lagoon system and is designed to be installed by a local contractor. The phone number is 308-382-8820 and e-mail is cristd@chiefind.com.