The Copiague Harbor Property Owners Association beach was closed to swimming after bacteria was found at levels higher than state standards, Suffolk County health officials said Monday.

Remaining closed for that same reason are: Tanner Park Beach, Copiague; Lake Ronkonkoma Beach, Islip; and the lake at Peconic Dunes County Park in Southold.

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Swimming in such contaminated water “can result in gastrointestinal illness, as well as infections of the eyes, ears, nose and throat,” Dr. James Tomarken, Suffolk’s health commissioner, said in a news release.

To learn more and stay up to date on affected beaches, residents can call the county’s bathing beach hotline at 631-852-5822.