Last Updated on May 4, 2026 by Admin
Public infrastructure projects are under more pressure than ever to cut water usage.
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Airports, transit centers, and government facilities have one problem in common — they all use a tremendous amount of water each day. With rising utility rates and ever more stringent environmental regulations, engineers can no longer choose fixtures based solely on cost.
You need a smarter approach.
The good news? Choosing sustainable plumbing fixtures isn’t hard. In fact, with a little guidance, you can lower water use, decrease expenses and meet sustainability objectives.
Here’s how to do it…
In this guide:
- Why Sustainable Fixtures Matter For Public Infrastructure
- The Engineer’s Selection Framework
- Key Fixture Types To Consider
- How To Build A Long-Term Strategy
Table of Contents
Why Sustainable Fixtures Matter For Public Infrastructure
Public infrastructure – particularly green airport infrastructure – deals with tremendous numbers of pedestrian traffic on a daily basis. Which means that restrooms are used frequently, faucets are turned on continuously, and even the smallest inefficiencies can become large volumes of wasted water.
Just look at the numbers…
Airports rank among the largest users of water among all public buildings. Efficient fixture selections at high-volume hubs like LAX are proving to have a meaningful impact. Industry experts, such as Chicago Faucets, report that airport water management is quickly becoming an integral component of long-term sustainability planning. In a single year, LAX can save an estimated 396,625 gallons of water each day, or the equivalent of 1.5 Boeing 777 airplanes.
That’s the scale we’re talking about.
For engineers working on public projects, the stakes are huge:
- Water bills: Public buildings rack up enormous utility costs each year.
- Compliance: New regulations are tightening every year and you need to meet them.
- Reputation: The public expects government and public buildings to lead by example.
- Long-term durability: Cheap fixtures break, leak, and need constant replacement.
Selecting a suitable fixture is not only for water savings today, but also to develop a reliable infrastructure for the next 20 to 30 years.
The Engineer’s Selection Framework
Well then, how do you choose the right plumbing fixtures? Here’s the simple approach to consider…
Start With The Use Case
Every fixture choice should start with one question:
How will this fixture be used?
A faucet in an airport restroom will get used thousands of times a day. A faucet in a small community centre will probably get used only a few hundred times. Duty cycle should be the first thing to think about.
For high-traffic public infrastructure, you need fixtures that can handle:
- Heavy daily use without breaking down
- Wide ranges of water pressure
- Vandalism and rough handling
- Easy cleaning and sanitation
If the fixture doesn’t satisfy the use case, the water savings are irrelevant — you’ll be replacing it within 2 years anyway.
Look At Flow Rates Carefully
Flow rate is the number one driver of sustainable performance. Standard commercial faucets push out 2.2 gallons per minute (GPM). But modern low-flow fixtures bring that number down significantly.
EPA estimates that low-flow fixtures can lower commercial building water use by 20-30%. That’s big savings when multiplied across an airport terminal or transit center.
But here’s the thing…
Low flows are not always best. If a fixture is too restrictive people will leave the tap on for longer to get the same job done. That swallows up your savings completely.
The sweet spot for most public restroom faucets is around 0.5 GPM.
Choose Sensor-Activated Fixtures
This is one of the lowest hanging fruit for any public infrastructure. Sensor-activated faucets, urinals and toilets only turn on when necessary.
Why does this matter?
Users of public washrooms frequently run taps. Users forget to turn off the tap, or they expect someone else to do so. With sensor activation, the fixture shuts off as soon as the user walks away.
This eliminates the most common type of waste in public infrastructure — user error.
Key Fixture Types To Consider
Ok, lets discuss fixture types that should be considered for public works projects.
Low-Flow Faucets
These are the workhorses of any sustainable restroom design. Look for fixtures that combine:
- 0.5 GPM flow rate or lower
- Sensor activation
- Vandal-resistant construction
- Easy maintenance access
Top of the line commercial faucets feature aerators. Aerators add air to the flow. This maintains the perception of strong flow at lower GPM.
High-Efficiency Toilets
Older commercial toilets use 3.5 to 7 gallons per flush (GPF). That’s a huge amount of water for something that gets used thousands of times per day. Modern WaterSense-certified toilets use 1.28 gallons per flush or less without sacrificing performance.
Dual-flush toilets are even more effective in high-traffic public restrooms. They provide users with a choice of a smaller flush for liquid waste — saving thousands of gallons each year.
Waterless Urinals
Want to slash water use? Waterless urinals will get your attention. Europe’s busiest airports in Belgium reported savings of 32 million litres of drinking water a year, a figure that engineers and facility managers do not ignore.
These fittings have an innovative trap filled with sealing liquid that lets the urine through and seals odours. They are easy to keep clean and the savings on water are phenomenal.
Pressure-Assisted Plumbing
In pressure assisted plumbing, you can put more compressed air and force the water through a small area faster, using less volume. Check out pressure assisted plumbing systems for big public projects.
How To Build A Long-Term Strategy
Here’s where most public infrastructure projects go wrong…
They view plumbing fixtures as a one-time purchase. They choose the least expensive, install it, then forget about it. Five years later they’re facing leaks, malfunctions and soaring utility costs.
Don’t do that.
Sustainable plumbing is a long-term strategy. Here’s how to build one:
- Plan for total cost of ownership — include water, energy and maintenance costs over 20+ years.
- Standardise across the facility — using the same fixture models simplifies maintenance significantly.
- Train your maintenance team — even the best fixtures will fail if no one knows how to maintain them.
- Monitor and measure — use smart metering to precisely track how much water you use.
Without a long-term strategy, the same mistakes will keep happening over and over again.
Final Thoughts
Picking green plumbing fixtures for public infrastructure need not be rocket science. Just follow some simple process steps:
- Start with the use case
- Consider flow rates carefully
- Add sensor activation wherever possible
- Pick fixtures built for the long haul
- Build a long-term strategy and stick to it
Public works projects — particularly green airport projects — can be a leader in water sustainability. With appropriate fixture selections, you can reduce your water usage by 20-30% or more, while meeting today’s environmental expectations.
The technology exists. The savings are significant. And the water sustainability impact is enormous.
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