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Spitiko > Around the house > What is a low-flow faucet? How much water can low-flow faucets save? Should I consider installing low-flow fixtures?
Reverse osmosis filter tap closeup with dripping water-drop. studio shot.

What is a low-flow faucet? How much water can low-flow faucets save? Should I consider installing low-flow fixtures?

Even if you’re not indulging in lengthy showers or allowing the water to run unnecessarily, standard showerheads and faucets tend to dispense water at a rate that leads to unintended water wastage whenever you use them.

Low-flow plumbing fixtures are specifically engineered to address this issue, effectively curbing water waste. By doing so, they not only save you money on your water bill but also help reduce your energy expenses by conserving hot water. This means your water heater doesn’t have to work as hard every day.

Continue reading to discover more about the advantages of low-flow fixtures and why you should contemplate installing them.

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What is a low-flow faucet?

A low-flow faucet is a water fixture engineered to minimize water usage by restricting the flow rate of water through the tap. Unlike conventional faucets, which often allow water to flow freely at a relatively high rate, low-flow faucets are equipped with special features such as aerators or flow restrictors. These components introduce air into the water stream or narrow the passage, reducing the amount of water released without compromising the perceived water pressure. As a result, low-flow faucets can significantly decrease water consumption and wastage.

One of the primary benefits of low-flow faucets is water conservation. By limiting water flow, they help conserve precious freshwater resources, making them an environmentally friendly choice. Additionally, reduced water usage translates to lower utility bills for consumers, contributing to cost savings over time.

Low-flow faucets are commonly used in both residential and commercial settings, including homes, offices, hotels, and public facilities. They are available in various styles and designs to suit different preferences and applications. Overall, low-flow faucets play a crucial role in promoting sustainable water management practices and mitigating the impact of water scarcity.

How much water can low-flow faucets save?

Low-flow faucets can save a significant amount of water compared to traditional faucets. On average, a low-flow faucet can reduce water usage by 30% to 60% per minute. For example, a standard faucet might release water at a rate of 2.2 gallons per minute (GPM), while a low-flow faucet typically releases water at a rate of 1.0 to 1.5 GPM. This means that for every minute the faucet is running, a low-flow model can save approximately 0.7 to 1.2 gallons of water.

The actual amount of water saved depends on factors such as the specific flow rate of the low-flow faucet, the frequency and duration of faucet use, and individual water consumption habits. However, over time, the cumulative water savings from using low-flow faucets can be substantial, leading to reduced water bills for consumers and conserving valuable freshwater resources for the environment.

Switching to low-flow faucets and fixtures can lead to significant savings on your water bills, potentially around $170 per year or more, according to an EPA report. While this upfront investment in more efficient water fixtures may seem daunting, the long-term benefits quickly outweigh the initial cost. However, the primary motivation to make this switch goes beyond financial savings; it’s about conserving water.

The importance of water conservation becomes evident when considering the limited availability of fresh water on our planet. While 71% of Earth’s surface is covered in water, only 3% is freshwater, and just 0.5% of that is suitable for drinking, as reported by the Bureau of Reclamation. Given these constraints, it’s crucial for all of us to play a role in reducing wasteful water consumption.

By replacing old, inefficient faucets and fixtures with WaterSense-labeled ones, you can make a significant impact. For instance:

  • You could save as much as four gallons of water per shower, potentially totalling around 1,460 gallons per year per family member.
  • Switching to low-flow faucets alone could save you up to 700 gallons of water annually.
  • Upgrading to a low-flow toilet could conserve up to 13,000 gallons of water per year compared to a standard model.

These figures highlight the substantial water savings achievable through simple changes in household fixtures, underscoring the importance of adopting water-efficient practices.

Things you need to know about low flow faucet

Reducing water usage doesn’t necessarily mean sacrificing water pressure. While low-flow sink faucets typically don’t raise concerns, some people worry that low-flow showerheads might lead to weak water pressure and unsatisfying showers. However, despite the reduction in water volume— which is the primary goal of low-flow design—many low-flow showerheads can still provide a refreshing and invigorating shower experience.

Water runs from a metal water tap. Close up.

There are two main types of water-saving showerheads: aerating and laminar.


Aerating showerheads work by mixing water with air through small holes in a screen, creating a fine but energetic spray. This process reduces water consumption while increasing the pressure of the individual water streams. The result is a rejuvenating shower experience often likened to “needles” of water, accompanied by a steamy ambience. However, because air is introduced into the water, the overall temperature may decrease slightly, potentially prompting the use of more hot water to maintain comfort.


On the other hand, laminar showerheads distribute water in continuous, non-turbulent streams without mixing in air. While they don’t produce the sharp “needles” characteristic of aerating heads, they offer larger individual streams. Laminar showerheads often feature adjustable settings for a gentle spray or a more vigorous massage. This technology is also popular in overhead rain-type showerheads, providing a gentle, soothing soaking experience. Unlike aerating models, laminar showerheads produce less steam, which can be advantageous for bathrooms with poor ventilation to prevent damage to paint, wallboard, and cabinets.

How do Low-flow fixtures work?

Low-flow plumbing fixtures utilize gravity-flow designs and pressure-assisting technology to reduce water usage without compromising water pressure. These fixtures are engineered to limit the amount of water flowing through them, ensuring efficient water usage while maintaining adequate pressure. Different types of low-flow fixtures include:

Types of Low-flow Plumbing Fixtures for Your Home: You can save water and reduce water-heating costs by installing the following low-flow fixtures:

bathroom water faucet health protection
  1. Low-flow toilets: Compared to standard toilets that can use up to six gallons of water per flush (GPF), low-flow toilets use less than 1.5 gallons. There are two types:
    • Gravity flow toilets use the natural force of gravity and water in the tank to flush waste through the toilet trap.
    • Pressure-assisted low-flow toilets utilize a pressurized water tank to release a smaller amount of water into the bowl, effectively flushing the contents.
  2. Low-flow showerheads: Standard showerheads use up to 2.5 gallons of water per minute (GPM), while low-flow showerheads use less than two gallons per minute. This saves half a gallon of water every minute! There are two types:
    • Aerating showerheads force water through small holes in a screen, mixing air with water to produce a fine but powerful spray.
    • Laminar showerheads provide a rainfall-style shower stream by limiting pressure.
  3. Low-flow sink faucets: Standard faucets use an average of up to 3 gallons per minute (GPM), while low-flow faucets don’t exceed 1.5 GPM. They utilize aerating technology to distribute water efficiently without compromising pressure.

Should I consider installing low-flow fixtures?

Absolutely. Low-flow plumbing fixtures offer benefits to every homeowner. In fact, some states already mandate their installation in both residential and commercial properties. While it might not be feasible for everyone to replace fixtures immediately, integrating low-flow options into your long-term plan is wise.

Low-flow fixtures not only decrease your utility bills but also contribute to water conservation, benefiting society as a whole.

Many low-flow attachments are easy to install yourself, requiring minimal expense. However, for more complex installations like low-flow toilets or entirely new fixtures, it’s advisable to seek guidance from local plumbing professionals. They can offer insights, help you make budget-conscious decisions, and advise on maintenance requirements before scheduling installation services.

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