Protecting & Restoring Long Island's Peconic Bays

Septic Waste - Experimental

Septic Waste - Experimental

Experimental septic waste treatment technologies include those that are currently being tested for provisional approval by Article 19 of the Suffolk County Sanitary Code. These include the nitrogen removing biofilters (NRB) and constructed wetlands currently being developed by the Stony Brook University Center for Clean Water Technology (SBU CCWT).

Nitrogen Reducing Biofilter–Individual

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Nitrogen Reducing Biofilter–Cluster

Septic Waste Experimental

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Constructed Wetlands

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Cape Cod Commission, 2020. Technology Matrix. Available at:

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SBU CCWT (Stony Brook University New York Center for Clean Water Technology), 2016. Nitrogen Removing Biofilters for Onsite Wastewater Treatment on Long Island: Current and Future Prospects. Prepared for Stony Brook University. June 2016.

Suffolk County, 2020a. Draft 2019 Report on the Performance of Innovative and Alternative Onsite Wastewater Treatment Systems. Suffolk County Department of Health Services. March 2020.

Suffolk County, 2020b. Septic Improvement Program – Vendor Contact Information (includes estimated operations and maintenance, parts replacement, and electrical costs). April 2020. Available at:,OM,Parts.pdf.

USEPA, 2000. Constructed Wetlands Treatment of Municipal Wastewaters Manual. EPA/625/R-99/010.

Waterloo Biofilter, 2001. Massachusetts Alternative Septic System Test Center Technology Fact Sheet – Interim Findings. Available at: Waterloo Biofilter Technology Fact Sheet – ETI Interim Findings (

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