Ronkonkoma Beach at Lake Ronkonkoma is shown on July 7,...

Ronkonkoma Beach at Lake Ronkonkoma is shown on July 7, 2012. Credit: Randee Daddona

Lake Ronkonkoma Beach, which was closed Monday to swimming after blue-green algae was discovered, has reopened, said Suffolk County health officials.

Recent samples showed water quality was at acceptable levels, officials said Tuesday.

Some species of the algae, known formally as cyanobacteria, "produce toxins that can cause health problems in humans and animals if exposed to large enough quantities," said Dr. James Tomarken, commissioner of health services.

For information on county beaches, call the hotline at 631-852-5822, or see suffolkcountyny.gov/health.

From celebrating America's 250th birthday to a new ride at Adventureland, NewsdayTV's Elisa DiStefano and Newsday lifestyle editor Meghan Giannotta have your inside look at Newsday's summer FunBook. Credit: Newsday/Howard Schnapp, Kendall Rodriguez, Drew Singh; Anthony Florio, Randee Daddona, Morgan Campbell, Debbie Egan-Chin

Get ready for sun and fun with NewsdayTV's summer FunBook special! From celebrating America's 250th birthday to a new ride at Adventureland, NewsdayTV's Elisa DiStefano and Newsday lifestyle editor Meghan Giannotta have your inside look at Newsday's summer FunBook.

From celebrating America's 250th birthday to a new ride at Adventureland, NewsdayTV's Elisa DiStefano and Newsday lifestyle editor Meghan Giannotta have your inside look at Newsday's summer FunBook. Credit: Newsday/Howard Schnapp, Kendall Rodriguez, Drew Singh; Anthony Florio, Randee Daddona, Morgan Campbell, Debbie Egan-Chin

Get ready for sun and fun with NewsdayTV's summer FunBook special! From celebrating America's 250th birthday to a new ride at Adventureland, NewsdayTV's Elisa DiStefano and Newsday lifestyle editor Meghan Giannotta have your inside look at Newsday's summer FunBook.

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