Countywide Onsite Sewage Disposal System Characterization and Selection of Appropriate Centralized or Distributed Treatment Options for Anne Arundel County, Maryland

Anne Arundel County, Maryland, conducted an evaluation of treatment service options for properties with onsite sewage disposal systems (OSDS, commonly referred to as septic systems). The overall goal of this effort was to develop a County program for the long-term management of the County's 40,700 onsite systems to achieve the nitrogen reduction goals for the Chesapeake Bay. This paper presents study results including treatment recommendations, nitrogen load reductions and planning-level cost estimates for potential cluster community wastewater systems, enhanced onsite septic systems, and potential sewer extension projects to connect existing areas on septic to existing sewer service areas (SSAs).