Phase II of the NODP is the result of several states' requests for demonstration projects, following the first phase of the project referenced above. Sites were selected for Phase II based on community interest and a number of other criteria, such as ecologically/geologically sensitive areas and areas where no wastewater treatment facilities exist. The states selected for demonstration projects under this phase are shown in the map below.

In addition, NODP Phase II projects will involve septic system operation and maintenance training and the creation of management districts. All NODP projects utilize a panel of national experts who are available to assist communities with questions about the technologies, installations, and monitoring. Also as part of NODP Phase II, the NSFC is curently developing a Demonstration Projects Database that will house a wide range of information on domestic wastewater demonstration projects across the U.S.