Milwaukee County Parks

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Cool Waters Aquatic Park

Stay cool this summer with the tallest waterslides in Milwaukee County, heated pool, children's waterslides, interactive water toys, sand volleyball courts, children's playground, Cool's Cafe and more.

  • Visit
  • Events
  • Season Pass
  • Parties
  • Rentals

Admission Fees

Age Single Visit Evening Swim
(M-Th after 6 p.m.)
0 – 2 years Free Free
3 – 11 years $6.25 $5
12 years+ $8 $5
Seniors (60+) $6.25 $5


Recreation Provider Rate

Advance purchase special rates are available to licensed daycare providers and organizations with a State Tax Exemption Number (copy of certificate required). Rec Provider Groups must call (414) 257-8098 to book their trip at least one week in advance. 

Prices are based on exit time, not time duration of visit. Enter as early as 10 a.m.

Admission rate per child or chaperone:

10 a.m. – noon: $4
10 a.m. – 1 p.m.: $4.50
10 a.m. – 2 p.m.: $5
10 a.m. – 3 p.m.: $5.50

Summer Hours 

Open through Labor Day, Sept. 2, 2019

Mon - Fri: 10 a.m. - 4:30 p.m.

Sat & Sun: Noon - 5 p.m.

Night Swim: Mon & Wed, 6 - 8 p.m.


Grab an inner tube and fly down the flume with a friend or take a ride down the body slide.

Water Obstacles 

Make your way across the log or lily obstacles!

Zero-depth Entry

Cool Waters is perfect for all ages thanks to a zero-depth entry pool, water mushrooms, a playground and water slides for toddlers.


Events at Cool Waters

Opening Day
May 25

Opening Day for the 2019 season is May 25, Saturday of Memorial Day Weekend!

Water Park Season Passes

Purchase a season pass to get unlimited entry to Cool Waters Aquatic Park all season long!

Memberships include:

  •     Unlimited entry to Cool Waters all season 
  •     Ulimited entry to Schulz Aquatic Center
  •     Invite to members-only event in August


Individual $65 
Family (up to four members) $170 
Each additional child* $35


Purchase your pass at Cool Waters.


Pool Gift Certificates

Purchase gift certificates in $5- $10- and $20-denominations. Redeem certificates for admission or concessions at any Milwaukee County Pool. Certificates are good for one year from date of purchase.

Birthday Parties at Cool Waters

Celebrate your child's birthday with family and friends at Cool Waters and leave the cleanup to us!

Your party package includes admission and food for 10 guests, plus use of the party area for two hours and a personal party host/hostess to show you to your party area and serve your food. 

$135 per party (plus $13.50 for each additional guest up to a maximum of 30)

Birthday Menu

Each of your guests will select from the special birthday menu. Meals are served with a brightly colored, reusable beach pail, soda and an ice cream treat.

  • Hot Dog Meal: hot dog and fries
  • Chicken Nugget Meal: chicken nuggets and fries
  • Burger Meal: Hamburger and fries

You may bring your own birthday cake to your reserved party. No other carry-ins are allowed.

Booking Your Birthday Party

Make your reservations early! The number of parties scheduled in a day is limited. Book your party at least seven business days in advance. Call our Food and Beverage team at (414) 257-5616 with your date and time slot preference. Full payment is due at booking to reserve your time.

Party Time Slots
  • 11 a.m. – 1 p.m.
  • Noon – 2 p.m.
  • 1:30 – 3:30 p.m.
  • 2:30 – 4:30 p.m.

Private Events at Cool Waters

Summer 2019: All private rental times are booked, but you can still get together with your group during public hours!

Rent the water park for a private event! Cool Waters includes a zero-depth, heated pool, giant tube and body water slides, children’s water slides, interactive water toys, sand volleyball courts, a children’s playground and two picnic shelters. We require at least three weeks advance notice to make a reservation. To book call (414) 257-8005.

Max Rental Capacity: 600

Availability: Rentals available Fri. - Sun. 7 – 10 p.m.

What you get: 

  • Private use of the water park
  • On duty lifeguards
  • Use of the picnic shelter in Cool Waters
  • Access to locker rooms, restrooms
  • Use of sand volleyball court

Rental Fees 

Rental Fee per hour
Private Rental $459.36 (pool admission included)
Cool Waters Picnic Shelter* $248.16 (plus pool admission)

 *available during public swim hours

Tax included


Height Requirements and Demonstrated Swimming Ability for Some Attractions 

To use the giant body- or tube-slides, children must be at least 48" tall.

To use lap lanes, youth must demonstrate their swimming ability to a lifeguard by way of a swimming test. Availability of lap lanes is dependent on weather and attendance.

Children age 11 and under must be accompanied by an adult 18 years old or older.

Swimming Attire

Swimsuits required, no street clothes allowed.

Swim diapers are required for all children who are not yet potty-trained.

How to Find Us

2028 S 124th St, West Allis


9480 Watertown Road
Wauwatosa, WI 53226
(414) 257-PARK (7275)

Connect with us on Nextdoor


2020 rentals guide

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