Nitrogen Reducing Barriers (NRB)

This page includes planning information for Nitrogen Reducing Barriers (NRBs). NRBs are a non-proprietary design nitrogen-reducing septic system. These systems show potential for reducing nitrogen discharge to the environment at its source. Demonstration has been proposed to determine NRB viability and performance as an alternative technology and to provide a case study to guide siting, design and monitoring of future projects.