Demonstration Systems

Between 1997 and 2003, the University of Rhode Island’s Cooperative Extension Onsite Wastewater Training Center, as part of the Block Island/Green Hill Pond Project, installed 25 demonstration advanced wastewater treatment systems at local Rhode Island home sites. The objectives of these demonstration systems included: to replace failed systems, to demonstrate to property owners how alternative systems may be installed on their own properties, how they work, and how they are maintained. In addition to this, the installation process also served as a means to train local contractors on how to install these technologies, and long-term evaluation and sampling data led to approval of systems for use in Rhode Island.

This project was a collaborative effort between The University of Rhode Island (URI), Rhode Island Independent Contractors Association (RICA), Rhode Island Department of Environmental Management (RIDEM), and Costal Resources Management Council (CRMC), along with several participating engineering firms.

Many of these systems offer pioneering technology for advanced nitrogen and bacterial removal as well as custom design for challenging site conditions.

The University of Rhode Island’s New England Onsite Wastewater Training Program has installed over 56 onsite demonstration systems since 1996. Twenty-five of these systems were installed as part of the Block Isalnd Green Hill Pond Demonstration Project. Below, you can veiw specific sites used in this project (either by location or by treatment unit used), including innovative applications of technologies and designs on marginallots.

Tour Systems by Treatment Units

  1. Textile Filter
  2. Foam Filter
  3. Trickling Filter
  4. Peat Filter
  5. Fixed Activated Sludge Filter
  6. Ultraviolet Light Unit
  7. Submerged Upflow Filter

Tour Systems by Soil Treatment Type

  1. Shallow Narrow Drainfield
  2. Bottomless Sand Filter Drainfield
  3. Bottomless Peat Filter Drainfield

Virtual Tour of Demonstration Systems