How Much Water Can a Shower Head Flow Controller Save in a Multifamily Property?

Water bills can be a major expense for multifamily property owners. With dozens or hundreds of residents using showers every day, even a small amount of extra water flowing through each shower can add up to thousands of gallons over time.

A shower head flow controller can help reduce this waste by controlling how much water passes through the shower. It is a simple way to manage water use without replacing every showerhead in the building.

But how much water can these devices actually save?

The answer depends on the property's current shower flow rates, the number of residents, and how often they shower. Let's look at the numbers and see how shower water savings can make a difference in a multifamily property.

How Much Water Can a Shower Head Flow Controller Save?

A shower head flow controller can reduce shower water usage by limiting the amount of water flowing each minute.

Water flow is measured in gallons per minute (GPM). For example, a shower running at 2.5 GPM uses 2.5 gallons of water every minute.

Although this study focused on household drinking water bills, it shows why property owners need to pay attention to water costs.

According to the U.S. Environmental Protection Agency (EPA), standard showerheads use 2.5 GPM, while WaterSense-labeled showerheads must use no more than 2.0 GPM.

If shower flow drops from 2.5 GPM to 2.0 GPM, water use falls by 20% for a shower of the same length.

A Simple Shower Water Savings Example

Consider a resident taking a 10-minute shower.

Saving five gallons in one shower might not seem like much. However, when many residents shower every day, the total savings can become significant.

These numbers are an example using two flow rates, not a guaranteed result from any particular device. Actual savings depend on the flow rates before and after installation and how residents use their showers.

How Shower Water Savings Add Up Across a Multifamily Property

A few gallons saved in one apartment can become thousands of gallons saved across an entire building.

Consider a 100-unit apartment building with two residents in each unit. For this example, assume:

• 200 residents live in the building.
• Each resident takes one 10-minute shower every day.
• Shower flow decreases from 2.5 GPM to 2.0 GPM.
• Each shower saves five gallons of water.

Here is how those savings add up.

Annual Shower Water Consumption

Example for a 100-unit building with 200 daily 10-minute showers.

In this example, the building could use 365,000 fewer gallons of shower water each year.

That reduction applies to shower water consumption, not total building water consumption. Toilets, faucets, laundry, and other plumbing fixtures still use water.

For multifamily property owners, this shows why improving shower water flow control across many units can be an important part of a larger water conservation plan.

How Does a Shower Head Flow Controller Work?

A shower head flow controller is a small device that controls the amount of water passing through a shower.

When someone turns on the shower, water moves through the plumbing and into the showerhead. Without proper flow control, more water than needed may pass through, especially when water pressure is high.

A pressure-compensating flow controller helps manage this by adjusting to changes in water pressure. When pressure rises, the device limits how much water passes through. When pressure falls, it adjusts to help maintain a more consistent flow.

This can be especially useful in apartment buildings, where water pressure may vary between floors or at different times of day.

The Shower Scrooge™ from The Water Scrooge™ is a water saving shower device that installs behind the shower fixture and works with the existing showerhead. Its pressure-compensating design helps control shower water use while keeping the device out of normal view and harder for residents to access or remove.

Can Lower Shower Water Usage Help Reduce Apartment Water Bills?

Yes. Reducing shower water consumption can help lower utility costs, especially when the property owner pays for water and sewer services.

Here is how the savings work.

Water costs: When showers use fewer gallons, the building may purchase less water from its utility provider.

Sewer costs: Many utilities calculate sewer charges using metered water consumption. Reducing water use may also help lower these charges, depending on local billing rules.

Water heating costs: Showers use both hot and cold water. When less hot water is used, the building may also need less energy to heat water.

How to Estimate Your Shower Water Savings in Dollars

Property owners can estimate the savings using this simple formula:

Gallons Saved ÷ 1,000 × Combined Water and Sewer Rate = Estimated Savings

Let's use the 100-unit apartment building example again.

If the property saves 365,000 gallons annually and its combined water and sewer rate is $15 per 1,000 gallons:

365,000 ÷ 1,000 × $15 = $5,475 in estimated annual water and sewer savings.

This example does not include possible energy savings from heating less water.

Actual utility savings will depend on local rates, fixed charges, sewer billing methods, and the building's water usage.

For owners looking to reduce water bills in apartments, controlling shower flow can be one practical step toward lowering operating expenses.

Why Choose The Shower Scrooge™ for Multifamily Water Conservation?

For multifamily property owners, reducing shower water waste across many apartments can be challenging.

The Shower Scrooge™ is designed to make shower water flow control easier without requiring major plumbing changes.

Here are some of its key advantages.

• Works with existing showerheads: Property owners do not need to replace every showerhead to control water flow.
• Hidden, tamper-resistant installation: The device sits behind the shower fixture, making it harder for residents to access or remove.
• Pressure-compensating technology: It adjusts to changes in water pressure to help maintain more consistent shower flow.
• Simple installation: The shower fixture is removed, the controller is placed at the connection, and the fixture is reinstalled. No wall opening or pipe cutting is required.
• Helps manage hot-water use: Reducing shower water consumption may also lower the amount of hot water that needs to be heated.

These features make The Shower Scrooge™ a practical option for property owners looking to improve multifamily water conservation.

The Water Scrooge™ also offers other water conservation solutions for properties with multiple sources of water waste.

For example, its full-service water savings case study describes a multifamily installation involving shower controllers and The Toilet Scrooge™ devices. The reported results reflect the combined conservation program rather than shower controllers alone.

Start Reducing Shower Water Waste Across Your Property

Shower water savings may seem small when measured one shower at a time. But across an entire multifamily property, controlling unnecessary water flow can make a meaningful difference in water consumption and utility costs.

The Water Scrooge™ offers water-saving products designed to help apartment owners manage water use, reduce avoidable expenses, and improve water efficiency across their properties.

With the right shower flow control solution, even small changes in daily water use can add up to long-term savings.

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