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Be sure to click through to each venue for current rates and hours. Town pools are usually open to nonresidents, but they may charge a higher entry fee if you're not from the area. 

Top Water Parks, Slides, and Pools in Nassau County

North Woodmere Park – Valley Stream

A favorite spot to cool off in the summer, North Woodmere Park is scheduled to reopen for Nassau County residents on Monday, June 27. This hot spot has three water features for young swimmers: A wading pool, a training pool, and an interactive water play area. There is an Olympic-sized pool, a diving pool, and a huge water slide for the rest of the family.

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Bop around on the water bumper cars at Bayville Adventure Park.

Bayville Adventure Park – Bayville

Who would imagine the tiny North Shore community of Bayville would host one of the Island's most popular amusement attractions? Currently open daily, the park is across the street from the Long Island Sound. In addition to its pirate-themed mini-golf, rock-climbing walls, arcade, and funhouse, the Bayville Adventure Park features a bumper-boat safari course and a spirited water balloon attraction.

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Take the long and winding path to the water on the slide at Cantiague Park.

Cantiague Park – Hicksville

Hugely popular with Nassau County residents, the outdoor swimming facility at Cantiague Park reopens for the season on June 27. It features everything the serious and not-so-serious swimmer needs, including an Olympic-sized pool, a diving pool, a training pool, and a kiddie pool for little ones, plus a fun water play area and two water slides. What more does a family need?

Race a friend down the dueling water slides at Wantagh Park.

Wantagh Park – Wantagh

Nassau County residents can enjoy this pool beginning Monday, June 27. The whole family will have fun spending the day at this swimming complex, which has water amenities to suit all preferences and abilities, including an Olympic-sized pool, diving pool, kiddie pool, and training pool. There are two 30-foot water slides plus a water play area for the little ones.

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Jump on the rescue boats at Adventureland.

Top Water Parks, Slides, and Pools in Suffolk County

Adventureland – Farmingdale

Along with its thrilling roller coaster and Ferris wheel, this venerable Long Island amusement park—which is currently open weekends only and set to open daily on June 20—has three exciting water rides. Adventure Falls is a popular flume ride for bigger kids with twists, curves, and a high-speed drop, while the Little Dipper is a fun log flume ride for the younger set. The Rescue Boats let riders navigate the waters while keeping an eye out for "crocs."

Meet up with a group of friends for a day at the Dix Hills Park Swimming Pool. Photo courtesy of The Town of Huntington

Dix Hills Park Swimming Pool – Dix Hills

This large outdoor pool reopens for the season on June 18 and features three diving boards. The facility also includes a kiddie pool, playground area, locker rooms, and food concessions. Pool passes are required for entry, and only Huntington residents are allowed to purchase them. Pool pass holders are allowed to bring out-of-town guests.

North Amityville Pool — North Amityville

You could easily spend the day at this Town of Babylon pool that opens in late June. Kids will love the large twisting water slide and kiddie pool, and adults can keep a watchful eye from the many shady spots that dot the property. Residents can purchase a seasonal pool pass or pay the $5 daily rate. Kids 3 and under are free.

Phelps Lane Pool — North Babylon

Phelps Lane Pool in North Babylon has double water slides, interactive pools, and a kiddie section. Nearby is a concession stand to purchase snacks, lunch, and shade arbors which provide a great shield from the sun. Babylon residents that don't have a seasonal pool pass pay the $7 daily admission fee. Little ones 3 and under are free.

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Head to the zero-entry pool at Splish Splash.

Splish Splash – Calverton

When most Long Islanders think water park, they immediately think Splish Splash. And why not? This 96-acre park has enough water-themed rides, slides, and attractions to keep an entire family happily saturated. Thrill-seekers can hit the Riptide Racer, a high-speed water race, and Bombs Away, which features dueling 300-foot slides. A family of four can take a ride on Bootleggers Run, and there's a large kiddie area just for little ones.

Town of Brookhaven Pools – Centereach and Holtsville

Families have their choice of three public pools in the Town of Brookhaven, and two have water slides. The main pool in Centereach has a 16-foot slide and a spraygroud with water features for younger children, while the Holtsville complex includes the main pool, dive tank, and a kiddie pool. The pools open for the season on June 25.

This article was first published in 2014.

Unless noted, photos courtesy of the parks