30K gallons of sewage leak into L.I. harbor; advisory issued

A sewage leak that reached the surface waters in Port Jefferson Harbor in Suffolk County has prompted health officials to issue an advisory asking residents and visitors to avoid contact with the water until at least 9 a.m. Wednesday.

The discharge in the town of Brookhaven was caused by an electrical malfunction in one of the area’s UV disinfection units, according to the New York Department of Environmental Conservation.

UV disinfection works by exposing contaminated water to ultraviolet lights to kill harmful microorganisms.

For about two hours on Monday, 30,000 gallons of “partially treated waste without disinfection” flowed into the waters of Port Jefferson Harbor prompting the agency to designate shellfish harvesting in the harbor complex and its tributaries as uncertified, or closed.

Officials said the measure, impacting roughly 1,600 acres of shellfishing beds, is being taken to protect public health. Harvesting will remain suspended until the agency determines that “conditions no longer exist that may make shellfish hazardous for use as food.”

“Without disinfection, partially treated sewage effluent carries high levels of pathogenic bacteria and viruses,” officials said. “When water quality in the enclosed harbors and bays is adversely affected by sewage, shellfish in these areas have an increased potential to be hazardous for use as food.”

Meanwhile, residents and visitors are being asked to take precautions when participating in recreational activities near the waters of the Port Jefferson Harbor Complex.

“Keep children and pets away from the area,” officials say. “If contact does occur, rinse off the affected area with clean water immediately.”

Those experiencing nausea, vomiting, diarrhea, skin, eye or throat irritation, allergic reactions, or breathing difficulties after exposure should seek medical attention.

https://www.nydailynews.com/2025/04/15/sewage-port-jefferson-leak-long-island-advisory/