Three of Nassau County's South Shore beaches have been closed to swimming after heavy rainfall, county health officials said Monday.

The move is a precautionary measure, officials said, because "storm water runoff can have a negative impact by elevating bacterial levels and affecting bathing water quality."

Affected are Hewlett Point Beach, Island Park Beach and Merrick Estates Civic Association.

Biltmore and Philip Healey beaches in Massapequa remain closed to swimming as a result of elevated bacteria levels.

For the latest on openings and closing, call the county's beach hotline at 516-227-9700.

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