A Nationally Recognized, Award-Winning Aquatic Park Everyone Can Enjoy!

Sea Lion Aquatic Park is an award-winning water park that offers refreshing summertime fun for residents and visitors. It is the perfect venue for birthday parties or other celebrations.

Sea Lion Park features a large open swim area that slopes upward to a zero-depth shallow end, which allows for easy entry into the pool for everyone. With two 50' body flume slides, two drop slides, a vortex pool, splash playground, sand & kiddie water play area, teen pool and more, there's something fun for everyone! Adult and senior designated swim schedules are offered as well.

Sea Lion Aquatic Park offers a full-service concession stand, locker room facilities, party rentals, swimming lessons, water fitness classes, Sea Lion Swim Team activities and special events throughout the summer.

View 2017 Season Calendar


Hours of Operation

Post Season: August 14 - September 4

Due to limited lifeguard staff availability as they return to school, the hours of operation for Sea Lion Aquatic Park for the last three weeks of the season will be as follows:
Monday, August 14 - Friday, August 18
5:00pm-8:00pm - Open Swim
Saturday, August 19 - Sunday, August 20
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Monday, August 21 - Friday, August 25
5:00pm-8:00pm - Open Swim
Saturday, August 26 - Sunday, August 27
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Monday, August 28 - Friday, September 1
Saturday, September 2 - Monday, September 4
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim


Contact Information

From time to time the pool may be closed for a specific reason, you may have an emergency and need to contact someone at the facility, need last minute swim lesson information, or have other questions about pool events and operation. Please utilize these phone numbers, check the website, and look at the Sea Lion Aquatic Park sign for updates on pool happenings.

Phone Hotline: 630-964-3410, ext. 2, opt. 2

  • Option 1 - (Hours and Fees)
  • Option 2 - (Daily Pool Update / Weather / Closings)
  • Option 3 - (Facility Rentals and Birthday Parties)
  • Option 4 - (Swim Lesson Hotline)
  • Option 5 - (Swim Team Hotline)
  • Option 6 - (Pool Manager)
  • Option 7 - (Lifeguard Office)

Emergencies: 630-964-3410, ext. 4321

Rental, Birthday Party, or Group Reservations: Laura Cavazos, 630-353-4308

Email: lcavazos@lisleparkdistrict.org


Weather & Other Closings

Sea Lion Aquatic Park will not be in operation under the following conditions and refunds or prorated fees will not be given under the following circumstances:

  • Forecasted weather is below 68 degrees according to the National Weather Service.
  • Lightning, severe rain, or any other condition that would jeopardize swimmer safety.
  • Mechanical failure - if this occurs you will be notified of the option to attend other local facilities.
  • Special events.
  • From time to time, the temperature may be above 68 degrees, however, weather conditions are not appropriate for swimming.
  • Low attendance. (Low attendance closings will be under the discretion of the Sea Lion Aquatic Park Management).


  • Certain park features may close due low attendance.
  • If the pool is closed at the 11:30am opening, attempts to re-open the pool will be made throughout the day, weather permitting.

Call 630-964-3410, ext. 2, opt. 2 for daily pool opening and closing information.