Visitor's Guide

No, entry to Centennial Beach is handled on a first-come, first-served basis through either a Beach membership or the purchase of a daily admission. A Centennial Beach membership does not guarantee entry to the facility.  If the Beach reaches capacity, members entry will be delayed until spots open within the facility.

The 2023 Centennial Beach schedule can be found here.

Decisions about opening and closing the facility will be at the sole discretion of the Park District staff. Please check our rainout line for current opening status: napervilleparks.org/cancellations-closures. No rain checks or refunds will be given for daily admissions due to weather, late park openings, or early park closures.

Information on Daily Admission Fees can be found here

Yes, memberships are available for residents and nonresidents to purchase.  Guests interested in purchasing a Centennial Beach membership can do so here.  Memberships purchased through May 29 will receive the preseason discounted rate.  Memberships purchased after May 29 will be charged the “Regular” rate. Members will be able to access the Beach at 11:00 am, Monday through Friday, 30 minutes prior to daily admission guests.  Members will receive early entry on weekdays at 11:00 am, 10% discount at Centennial Grill, and coupons to redeem for other Park District amenities. (Coupons can be picked up at Centennial Beach starting on May 29.) A Centennial Beach Membership does not guarantee entry to the facility.  If the Beach reaches capacity, members’ entry will be delayed until spots open within the facility.

A complete list of Beach rules can be found here

Yes, Adult Float times will be available.  A schedule of Adult Float times can be found here  All Adult Float guests must have a Beach membership or pay the appropriate daily admission fee.  Adult Float guests may remain in the facility for the day’s open swim.

Day camps and organization-based groups will be accommodated.  Organizations can contact Centennial Beach at 630-848-5000 for more information. Groups, such as parties, family gatherings, etc. may attend Centennial Beach, but group rates will not be taken at this time.

Guests will enter the facility through the two gates located at the front of the Centennial Beach Bathhouse at 500 West Jackson Ave. on the west side of the Beach. All bags and coolers will be checked prior to entry. 

Parking is available near the Centennial Beach Bathhouse, located at 500 West Jackson Ave. on the west side of the Beach. 

The locker rooms and restrooms, including sinks, faucets, toilets, door handles, and showers, will be cleaned and sanitized regularly.  Lounge chairs, lounge areas, common areas, and frequently touched surfaces also will be cleaned and sanitized on a regular basis.

Guests may bring in their own food and drink, but alcohol and glass is prohibited. All coolers and bags will be checked prior to entry.  The Park District will have trash cans available throughout the park for guests to use. All guests are expected to leave their area as they found it.  Centennial Grill also will be open with food and beverage options available for purchase.

A limited number of chairs and picnic tables will be available. Guests are encouraged to bring their own folding chairs from home.

Centennial Beach is an historic quarry that holds an amazing 6.2 million gallons of water that starts with zero depth and goes as deep as 15 feet. It is classified as a “beach” through the Illinois Department of Health and not as a swimming pool. The water itself is chlorinated, re-circulated and hand-skimmed to remove debris, but it is not filtered like a typical swimming pool. Additionally, the water is not heated, so the temperature increases over the course of the summer, provided that the air temperatures are adequately warm.

The Deep Water Test is the most unique requirement we have. Patrons who have not yet graduated from the 8th grade are required to take a swim test prior to entering the deep end/diving board area. This is for the safety of all swimmers. The test consists of a swim of 100 total meters using the freestyle stroke and using side-to-side breathing. A complete Deep Water Test description and comprehensive facility rules information can be found here.

Centennial Beach’s water is chlorinated, re-circulated and hand-skimmed to remove debris, but it is not filtered like a typical swimming pool.

Yes – our staff tests the water 2-3 times daily to monitor chlorine levels and pH balance. We typically follow swimming pool regulations with regard to water quality standards. On a weekly basis, our water is sampled and tested by an independent laboratory to ensure that the water quality is being maintained.

Our safety breaks are a great opportunity for swimmers to take a break from the water, rest and check-in with family members.

Kids can swim in the deep water regardless of age, provided they have passed the Deep Water Test.

We do not allow the use of floats, tubes or noodles at the Beach. You may bring in small water toys and soft/squishy balls. Only Coast Guard approved floatation devices are permitted. There are a limited number of life jackets available at the Beach.

For the safety of all of our swimmers, and per the Illinois Department of Health, children who are not toilet-trained must wear swim diapers while in the water.

Per the Illinois Department of Health, pets of any kind are not allowed in the facility. The exception to this restriction is service animals.