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Blue-Green Algae Blooms Found in Middle Island and Stony Brook

Categories: Health Services | Author: gkelly-mcgovern | Posted: 9/15/2017 | Views: 3076

Sampling performed by SUNY Stony Brook has confirmed the presence of a cyanobacteria bloom, more commonly known as blue–green algae, at Spring Lake in Middle Island as well as in the Stony Brook Duck Pond in Stony Brook. 

Health officials advise residents not to use or swim or wade in the any of the above-named bodies of water and to keep their pets and children away from the area. 

Though blue-green algae are naturally present in lakes and streams in low numbers, they can become abundant, forming blooms in shades of green, blue-green, yellow, brown or red. They may produce floating scums on the surface of the water or may cause the water to take on paint-like appearance. 

Contact with waters that appear scummy or discolored should be avoided. If contact does occur, rinse off with clean water immediately.  Seek medical attention if any of the following symptoms occur after contact: nausea, vomiting or diarrhea; skin, eye or throat irritation; or allergic reactions or breathing difficulties.

To report a suspected blue-green algae bloom at a body of water that contains a Suffolk County-permitted bathing beach, contact the Suffolk County Department of Health Services’ Office of Ecology at 631-852-5760 between 8:30 a.m. – 4:30 p.m. or by email at any time at

To report a suspected blue-green algae bloom that is in a body of water that does NOT contain a Suffolk County permitted bathing beach, contact the Division of Water at New York State DEC: 518-402-8179 between 8:00 a.m. – 4:00 p.m. or anytime via email at

For a comprehensive list of affected waterbodies in New York State, visit the DEC’s Harmful Algal Bloom Notification Page at

For more information about blue-green algae, visit the Suffolk County website:

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