This centralized system will replace existing, failing on-site systems in the community. Sunset, population 339, is located in Montague County, nine miles southeast of Bowie. High Island ISD proposes to replace its current wastewater treatment system, which includes inadequately-sized septic tanks that discharge into a drainage ditch, with a treatment works using alternative technology. The new wastewater system will use a low-pressure septic tank effluent pump system with a natural treatment facility. The natural treatment facility, or wetland, will be constructed at a site donated by the Audubon Society in exchange for the ISD providing service to a bathroom facility at the wetland site for bird watchers and constructing an observation walkway around the land.
High Island is located in northeastern Galveston County on the Bolivar Peninsula .