Splash Logic Harmony Square Splash Pad ~ Tinley Park, Illinois

What Powers an Interactive Fountain AKA a Splash Pad? Inside the Harmony Square Water Feature

Public spaces today aren’t just open areas—they’re built to bring people together.

In Tinley Park, Illinois, Harmony Square is a perfect example of that shift. At the center of the plaza is an interactive fountain that transforms the space into a year-round destination.

What looks like a simple water feature on the surface is actually a one off custom system built below ground—designed for performance, safety, and generations of public use.

Harmony Square: More Than an Interactive Fountain

To visitors, the Harmony Square fountain is all about experience—water jets firing, kids running through the plaza, lights activating in the evening.

But beneath the surface, it’s a coordinated construction system made up of:

• Underground water collector tank

• Underground mechanical vault

• State of the art pumps and filtration systems

• Fully customizable electrical and control infrastructure

Every spray, sequence, and lighting effect is powered by equipment installed below the plaza—completely hidden from view.

The Collector Tank: The Core of the System

At Harmony Square, everything starts with the underground collector tank.

This system is responsible for:

• Storing water

• Filtering and treating it

• Recirculating it continuously

Instead of wasting water, the fountain reuses it—cycling it through filtration and treatment processes to keep it safe for public interaction while supporting all-day operation with minimal waste.

It’s one of the most important parts of the entire system—and one most people never see.

Inside the Vault: Where the System Lives

The real work behind the Harmony Square fountain happens inside the underground mechanical vault.

This space houses the equipment that controls everything above ground, including:

• High-efficiency pumps

• Filtration and sanitation systems

• Automated chemical treatment systems

• Pressure regulation equipment

• Water level sensors

• Lighting and electrical controls

These components operate together to maintain water quality, control flow, and power the full interactive experience.

Built for Real-World Use in Harmony Square

Harmony Square isn’t just a visual feature—it’s a high-traffic public environment.

The interactive fountain was constructed to handle:

• Heavy daily use from families and visitors

• Continuous operation throughout the day

• Changing Midwest weather conditions

• Public safety and accessibility requirements

Every element—from underground infrastructure to surface spray zones—was installed with long-term reliability in mind.

From Open Space to Community Hub

Before Harmony Square was developed, the site was an underutilized open area.

Today, it’s one of Tinley Park’s most active public spaces.

The interactive fountain plays a major role in that transformation:

• Summer: Kids and families engage directly with the water

• Evenings: Lighting systems bring energy to the plaza

• Events: Concerts, markets, and gatherings fill the space

• Winter: The plaza transitions into seasonal use, including ice activities

The fountain doesn’t just add visual appeal—it creates movement, energy, and a reason for people to gather.

Why Interactive Fountains Like Harmony Square Work

Projects like Harmony Square show why interactive fountains continue to be a key part of modern public spaces.

When constructed correctly, they provide:

• High engagement and activity

• Efficient water use through recirculating systems

• Long-term durability and reliability

• A seamless experience with hidden infrastructure

They turn open areas into destinations—without disrupting how people move through the space.

Building Interactive Fountains the Right Way

At Splash Logic, the focus is on building interactive fountains that perform in the real world.

That means:

• Coordinating underground and surface systems

• Installing reliable mechanical infrastructure

• Prioritizing safety, efficiency, and durability

• Delivering systems that operate seamlessly in public environments

Designed to Be Used

The Harmony Square interactive fountain is more than a feature—it’s part of how people experience the space.

From the infrastructure below ground to the activity above it, everything works together to create a place people return to again and again.

And like every great interactive fountain, it all starts beneath the surface.