Connetquot River Sewer Project Purpose and Goals

The goal of the Connetquot River Sewer Project is to provide sewer service to parcels in the Great River community. The project will remove nitrogen from the Great South Bay and protect the Connetquot River.

The project area will be the Hamlet of Great River, which is comprised of 465 parcels.

Most of the system will be a gravity flow system because of the geography of the area, although there may be a need for pump stations on low-lying parcels in the project area.

The current load of nitrogen that will be removed from entering ground water is estimated to be 41 pounds per day.

Why the Connetquot River Sewer Project Is Important

Suffolk County Water Quality Initiatives

Suffolk County completed a Comprehensive Water Resources Management Plan in 2015. The plan clearly determined that nitrogen – which primarily comes from residential cesspools/septic systems and fertilizer – is the primary cause of harmful algal blooms, hypoxia, reduction in shellfisheries and the loss of wetlands and sea grass beds. The loss of wetlands and seagrass beds opens our coastal areas up to greater flooding because the presence of this native vegetation serves as a buffer and sponge to deter storm surge.

The County’s Comprehensive Water Resources Management Plan recommended four sewer projects along Long Island’s south shore rivers to help ameliorate the harmful environmental effects of nitrogen load along the:

  • Carlls River
  • Connetquot River
  • Forge River
  • Patchogue River

The Water Cycle

For more information, please access the Suffolk County Comprehensive Water Resources Management Plan.