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Since 1998
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Estimate how much water and money you could save annually by installing tap flow restrictors.
The Tap Flow Restrictor Savings Calculator helps you estimate water, energy, and cost savings achieved by installing tap (faucet) flow restrictors. By comparing your current tap flow rate with a reduced, water-efficient flow, this tool shows how small upgrades can lead to significant long-term savings—without compromising everyday comfort.
Flow restrictors are one of the simplest and most cost-effective water-saving solutions available. This calculator makes the benefits clear in seconds.
A tap flow restrictor is a small device installed in or on a tap that limits the amount of water flowing through while maintaining adequate pressure. Many modern taps include restrictors as standard, but older taps often run at much higher flow rates than necessary.
Reduced water consumption
Lower water bills
Less energy used to heat water
Improved environmental impact
Quick and inexpensive installation
This calculator estimates savings by comparing current water usage with restricted flow usage over time.
Current tap flow rate
Flow rate after installing a restrictor
Daily tap usage duration
Number of people using the tap
Water and wastewater cost estimates
Hot vs cold water usage
The result is a clear breakdown of water, energy, and financial savings on a monthly and annual basis.
Many taps flow at 10–15 litres per minute, while efficient flow restrictors can reduce this to 4–6 litres per minute. Over weeks and months, this difference adds up to thousands of litres saved.
Reducing flow doesn’t mean reduced performance—it simply means less wasted water.
Handwashing
Brushing teeth
Shaving
Food preparation
Washing dishes
Cleaning surfaces
Offices
Schools
Restaurants
Public washrooms
High-use taps benefit the most from flow restriction.
The calculator shows:
Litres of water saved
Estimated reduction in water bills
Energy savings from reduced hot water use
Annual cost savings
Environmental impact reduction
These insights help you decide where and how quickly restrictors pay for themselves.
This tool is ideal for:
Homeowners improving efficiency
Renters reducing utility bills
Landlords upgrading rental properties
Businesses cutting operational costs
Sustainability and green-building professionals
✔ Easy-to-understand savings estimates
✔ Supports water conservation goals
✔ Highlights fast return on investment
✔ Suitable for homes and businesses
✔ Free and easy to use
In many cases, within a few months. Because restrictors are inexpensive and installation is quick, even modest water savings can cover the initial cost rapidly—especially on frequently used taps.
Fix dripping taps immediately
Turn off taps while brushing or soaping
Use cold water where possible
Combine restrictors with aerators
Educate household members or staff
The calculator helps measure the impact of these habits.
The calculator provides estimated savings based on average flow rates and usage patterns. Actual savings may vary depending on behaviour and local water costs.
No. Flow restrictors reduce volume, not pressure. Most users notice little to no difference in performance.
Yes. It is suitable for homes, offices, and small commercial properties.
Yes. Reduced hot water usage also lowers energy consumption, which is reflected in the estimates.
Yes. Most can be installed in minutes without specialist tools.
Yes. The Tap Flow Restrictor Savings Calculator is completely free.
The Tap Flow Restrictor Savings Calculator provides informational estimates only. Actual savings may vary depending on tap type, water pressure, usage habits, and local tariffs.
Small upgrades can deliver big results. Use the Tap Flow Restrictor Savings Calculator to see how a simple device can reduce water use, lower bills, and support a more sustainable future.