Lake Ronkonkoma Beach in the Town of Islip has been closed to bathing as a result of higher than acceptable levels of blue-green algae, the Suffolk County Department of Health Services said Wednesday.

The beach was closed to bathers earlier in the month for the same reason, and was re-opened Aug. 22, after samples showed the water quality to be acceptable, the health department said.

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There's no timetable to reopen the beach.

For more information on affected beaches, call the county's bathing beach hotline at 631-852-5822 or check