If you're going to drink this Labor Day weekend, don't drive -- and don't operate a boat, either -- police in Nassau and Suffolk are warning.

Cops in both counties said they will be cracking down on drunken drivers and impaired boat operators this weekend.

"Police are taking a zero-tolerance approach with those who drink and get behind the wheel of a car or boat," Suffolk County Executive Steve Bellone said in a statement.

In Suffolk, that crackdown not only means regular patrol officers will be on the lookout for offenders, but also officers from the Marine Bureau, Community Support Units, Motorcycle Section and SAFE-T (Selective Alcohol Fatality Enforcement) Section.

Police departments all over Nassau also will be cracking down on drunken drivers.

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The Nassau police and several village police departments are participating this weekend in the STOP-DWI enforcement initiative, which will include increased patrols and sobriety checkpoints.

"Police officers will be targeting drunk drivers and looking to prevent the kind of senseless alcohol-related accidents that often occur during a holiday weekend," Nassau County Executive Edward Mangano said earlier this week in a statement announcing the annual effort. "There will be additional police patrols throughout Nassau County and chances are if you drive drunk this weekend, you will be arrested."

The STOP-DWI initiative is funded by a grant from the New York State STOP-DWI Coordinators Foundation through the Governors Traffic Safety Committee, officials said.

In addition to the Nassau police, the following agencies also will participate in the crackdown: Garden City, Glen Cove, Great Neck Estates, Hempstead, Kensington, Kings Point, Lake Success, Long Beach, Lynbrook, Muttontown, Old Brookville, Old Westbury, Port Washington and Rockville Centre.

With Nicole Fuller