KleanTu® Installations

KleanTu^® Installations

As of April 2026, KleanTu^® has installed over 270 NitROE^® WWTS with flow rates ranging from 220 gallons per day (gpd) in single-family residential settings to 18,260 gpd for combined flows from a cluster system that serves apartment buildings and townhomes. The NitROE^® WWTS have been installed on Martha’s Vineyard (MV), Nantucket, Cape Cod (Cape) and the South Shore of Massachusetts. Additional NitROE^® units are in design phase for other regions of Massachusetts and the New England area.

Current installations include the following towns:

Aquinnah – MV
Barnstable – Cape
Bourne – Cape
Chilmark – MV
Edgartown – MV
Falmouth – Cape
Mashpee – Cape
Nantucket
Oak Bluffs – MV
Plymouth – Off Cape/South Shore
Sandwich – Cape
Tisbury – MV
Truro – Cape
Wellfleet – Cape
West Tisbury – MV
Yarmouth – Cape

KleanTu^®’s NitROE^® WWTS is listed on the Massachusetts Department of Environmental Protection’s Best Available Nitrogen Reducing Technologies (BANRT) list under a provisional permit. KleanTu^® expects to obtain General Use approval in 2026. KleanTu^® has collaborated with the following Massachusetts organizations during the pilot through provisional permit stages to develop, optimize and implement the technology at certain locations. The NitROE^® units are currently being installed under a provisional permit from the Massachusetts DEP:

Massachusetts Alternative Septic System Test Center (MASSTC)
Town of Tisbury, MA
Barnstable Clean Water Coalition (BCWC)
Massachusetts Clean Energy Center (MassCEC)


Island Housing Trust (IHT), Martha’s Vineyard
Buzzards Bay Coalition (BBC)
Boards of Health for various municipalities and other Martha’s Vineyard/Cape Cod organizations

Shubael Pond Innovative and Alternative Septic System Project

KleanTu^® is currently working with the BCWC to install multiple NitROE^® systems in the Shubael Pond area of Marstons Mills, MA to improve water quality around the neighborhood. The BCWC highlighted the NitROE^® project in their Fall 2021 newsletter and in this video.

KleanTu^® WWTS Installations