Combined treatment and dispersal system enables development of 30-home residential community 

Problem: The Cottages at River Hill in Newbury, Massachusetts, is a residential community of 30 clustered single-family homes. A system was needed to handle a total design flow of 9,240 gpd from the 84 total bedrooms in the development. 

Solution: Developers selected an Enviro-Septic combined treatment and dispersal system from Infiltrator Water Technologies. Due to separation to seasonal high-water table requirements for new construction, the system was designed in an elevated mound configuration including two beds totaling 6,002 feet of pipe configured in 66 rows at 91 feet each. Part of one of the beds (15 rows) slopes at 6% to allow the large field to blend in with the terrain and save on the cost of additional fill, which would have been required for a level bed. Because of the secondary treatment performance of the system, it is approved at a 40% reduction as compared to conventionally sized systems in Massachusetts. This enabled a smaller footprint and significantly less disturbance to the natural areas of the property.

Result: Today, the Cottages at River Hill are fully occupied. The wastewater treatment system requires low maintenance and the clustered homes preserve open spaces and natural vistas. 800-221-4436; www.infiltratorwater.com