Connecticut Department of Environmental Protection
http://dep.state.ct.us/
Maine Department of Environmental Protection
http://www.maine.gov/dep/index.shtml
Massachusetts Alternative Septic System Test Center
http://www.buzzardsbay.org/etimain.htm
Massachusetts Department of Environmental Protection
http://www.mass.gov/dep/dephome.htm
National Environmental Health Association
http://www.neha.org/
National Onsite Wastewater Recycling Association
http://www.nowra.org/
National Small Flows Clearinghouse
http://www.nsfc.wvu.edu/
New England Interstate Water Pollution Control Commission
http://www.neiwpcc.org/
New Hampshire Department of Environmental Services
http://www.des.state.nh.us/
Orenco Systems Inc.
http://www.orenco.com/
Rhode Island Department of Environmental Management
http://www.dem.ri.gov/
Rhode Island Onsite Wastewater Training Center
http://www.uri.edu/ce/wq/owtc/html/owtc.html
U.S. Environmental Protection Agency Region 1: New England
http://www.epa.gov/region01/index.html
Xerxes Corporation
http://www.xerxescorp.com/index.shtml