Suffolk County authorities are increasing patrols on the roads and the water ahead of Memorial Day weekend and through the summer.

Police will have an additional four officers and one sergeant on patrol this summer, in addition to 17 highway patrol officers and three sergeants targeting driving while under the influence of drugs and alcohol and intoxicated boating, Suffolk County Police Commissioner Kevin Catalina said on Wednesday.

"This Memorial Day weekend really marks the unofficial start of summer, and this summer to Labor Day is the most dangerous time to be on the roadways or on our waterways," Catalina said. "This brings us up to levels that we haven't seen in the highway unit since the early 2000s. We're going to continue to dedicate our resources whenever possible to highway enforcement, recognizing that is something that affects every individual who lives or comes into Suffolk County."

Catalina said highway officers, trained in identifying intoxicated drivers, will work with the Suffolk police boating unit to look for BWIs on the water.

"We want to remind everybody that we will be out there," Catalina said. "We're not going to tell you when, we're not going to tell you where, but they will be out there, and they will be issuing summonses for that and possibly arrests as well."

Last year Suffolk police arrested 29 people for DWI during Memorial Day weekend, and made 336 DWI arrests between Memorial Day and Labor Day.

Suffolk County Executive Edward P. Romaine said police would be targeting drunken, drugged and distracted drivers on the roads.

‘We’re going to try to make this the safest summer ever," Romaine said. "Don’t put people at risk on our roads. Our roads are dangerous enough."

Suffolk County District Attorney Raymond Tierney and Sheriff Errol Toulon Jr. also announced a partnership with the U.S. Coast Guard Sector Long Island Sound to patrol the waters, including the Great South Bay.