The Nassau County Department of Health is advising against swimming at 19 beaches due to bacteria concerns.
The agency said swimmers should stay out of the water at 14 North Shore and five South Shore beaches.
The advisory is a precautionary measure for beaches known to have substantial storm-water runoff caused by yesterday's heavy rainfall. The runoff can raise bacteria levels so the waters fail to meet the New York State standards for swimming, health officials said.
North Shore beaches closed are:
Centre Island Sound, Bayville; Creek Club and Lattingtown Beach, Lattingtown; Laurel Hollow Beach, Laurel Hollow; Morgan Sound, Glen Cove; North Hempstead Beach Park, Port Washington; Piping Rock Beach Club, Locust Valley; Pryibil Beach, Glen Cove; Ransom Beach, Bayville; Theodore Roosevelt Beach, Oyster Bay; Sea Cliff Village Beach, Sea Cliff; Soundside Beach, Bayville; Stehli Beach, Bayville; and Tappen Beach, Glenwood Landing.
South Shore beaches closed are:
Biltmore Beach Club, Massapequa; Hewlett Point Beach, East Rockaway; Island Park Beach, Island Park; Merrick Estates Civic Association, Merrick; and Philip Healey Beach, Massapequa.
For recorded information on beach closings and openings in Nassau, call 516-227-9700. Health department representatives are available weekdays, from 9 a.m. to 4:45 p.m., at 516-227-9717.