Centennial Beach is a public aquatic park located at 500 W. Jackson Avenue in Naperville, Illinois.

Among its features is a sand beach next to the shallow end of the pool which offers a zero-depth entry.

The deep end has an NCAA and USS-approved diving complex, which houses two one-meter springboards and one three-meter board.

Every Saturday morning at 7:00 am the Centennial Beach lifeguards train and do drills for 2 hours before the pool opens.

In mid-August the beach begins to close earlier than usual due to early darkness.

[2] The beach plays host to various athletic events and is known for its nationally competitive lifeguard team.

This facility includes skating elements, such as half-pipes, quarter pipes, fun boxes, rails and more.

[4] Centennial Beach has a strict swimming requirement for the deep end which is blocked off by a pool safety rope.

Centennial Beach’s licensed guards are trained in CPR, First Aid, and Ellis Lifeguarding.

The lifeguards at Centennial Beach have received annual and national recognition for outstanding aquatics safety.

Training six days a week for the whole month of May and continues into June depending on individual applicant's readiness.

There are two main cash registers, but on a really hot day towards the right of the building they open up a third which is hidden and not many people notice it.

In this case, having a third register open helps out the line when it becomes super long on busy days.

Anyone who lives in Naperville will receive a discount off their ticket, as for others who aren't in the area they will have to pay full price.

Once in the men or woman's restroom, you will notice two drinking fountains, stalls to change into, storage for belongings, washrooms, and showers.

Below the bathhouse, down the stairs there will be the guard house, where lifeguards on/off duty will stay and relax before they go out on the beach to watch over families.

The swim team helps to enhance competitive strokes, conditioning, starts, turns, and more.

The Mudrats have swim practice each weekday morning in the Centennial Beach lap lanes unless there is bad weather.

There are a total of 5 practices a week, every swimmer must attend 3 out of 5 in order to qualify to swim at all of the meets.

The Committee was appointed by Judge Win Knoch, General Chairman of the Naperville Centennial Celebration, and consisted of 33 residents who each paid $500, a total of $16,500, to purchase the 45 acres (180,000 m2) of 1 large and 1 small limestone quarry (later merged to create 1 swimming pool) as well as other land in Downtown Naperville near the DuPage River from the Von Oven estate.

This Aquathon included community members doing water skiing demonstrations, high-dive exhibitions and synchronized swimming.

In 1970 the “Save the Beach Committee” was formed, composed 34 community members, to keep the pool from shutting down.

The 2006 aquathon included activities like sandcastle and sand burying contests, greased watermelon and innertube races, bozo buckets and tug-of war, kayak demonstrations, scavenger hunts, pier tag tournaments, live music entertainment, cartoonist, face painters, balloon artists, a skate challenge, a water polo tournament, and a variety of unique and entertaining water-based performances for all ages.

After 2 weeks and 3 days the 17 inches (430 mm) of waters receded, and the beach was emptied, cleaned and refilled.