[Owtsinfo] Attention OWTS Designers - A/E Technology Status Update - Norweco Singulair TNT and Hydro-Kinetic Model 600FEU

[Onsite Wastewater Treatment System]

Attention OWTS Designers: Effective October 15, 2021 the RIDEM OWTS Program will not be accepting OWTS Construction Permit Applications that include the following pretreatment technologies due to vendor non-compliance with the RIDEM Monitoring Protocol for Nitrogen Removal Systems. This change applies to these technologies for waste strength reduction and nitrogen reduction applications.


  1.  Norweco Singulair TNT
  2.  Norweco Hydro-Kinetic Model 600 FEU

This information is also highlighted on the latest RIDEM OWTS A/E Technology List for future reference.

The RIDEM OWTS A/E Technology List is available on our website via the following link: http://www.dem.ri.gov/programs/benviron/water/permits/isds/pdfs/ialist.pdf


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Rhode Island Department of Environmental Management
Office of Water Resources - Onsite Wastewater Treatment Systems (OWTS) Program
235 Promenade Street, Providence RI 02908
Website Address: www.dem.ri.gov/septic<http://www.dem.ri.gov/septic>;
OWTS Phone Line: 401.222.3961;
OWTS General Information Email Address: DEM.OWTS at dem.ri.gov<mailto:DEM.OWTS at dem.ri.gov>

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