Low Flow Toilets vs. Regular Toilets: Save Water and Money Efficiently

Toilets are a modern convenience we often take for granted. But did you know toilets use more water than any other appliance in your home besides outdoor irrigation? That’s why low flow toilets are becoming a popular choice. They promise water savings and efficiency, but are they worth replacing your regular toilet? Let’s break down everything you need to know about low flow toilets, how they work, and how they compare to traditional models.

What Are Low Flow Toilets?

Low-flow toilets, sometimes called ultra-low flow toilets (ULFTs), are designed to use less water per flush than traditional toilets. In the early 1990s, U.S. law required new toilets to use no more than 1.6 gallons per flush (GPF). This is a big change from older models that use as much as 7 gallons per flush.

Low flow toilets achieve efficiency with innovative designs and flushing mechanisms. The Environmental Protection Agency (EPA) estimates that switching to a low flow toilet can save a family up to 13,000 gallons of water per year. That’s not only good for the environment but also for your wallet!

How Low Flow Toilets Work

Low flow toilets have two main types of flushing mechanisms:

1. Gravity-Assist Toilets

Gravity-assist toilets rely on the force of gravity to flush. When you press the flush handle, water flows from the tank into the bowl and siphons waste away. The system is simple, effective, and easy to repair. Modern gravity toilets have improved designs that maximize water flow efficiency.

2. Pressure-Assisted Toilets

Pressure-assisted toilets use pressurized air to push water and waste out forcefully. These toilets are very efficient, but they tend to be noisier and more expensive than gravity models. They’re a great option if you want a powerful flush, but they require a bit more maintenance.

Low Flow Toilets vs. Regular Toilets

Water Usage

• Regular Toilets: Use between 3 to 7 gallons per flush.
• Low-Flow Toilets: Use 1.6 gallons per flush or less. Some high-efficiency models even use 1.28 gallons or less.

Cost Savings

Switching to a low-flow toilet can significantly reduce your water bill. The EPA estimates that households can save $140 annually and up to $2,900 over the toilet’s lifetime by making the switch.

Environmental Impact

• Regular Toilets: Waste a lot of water, which is a precious resource.
• Low-Flow Toilets: Help conserve water, protecting groundwater supplies and reducing strain on water treatment systems.

Performance

• Older Regular Toilets: Usually flush effectively but waste water.
• Modern Low-Flow Toilets: Improved designs ensure effective waste removal. Many meet Maximum Performance (MaP) standards, meaning they can handle at least 500 grams of waste per flush.

Noise

• Regular Toilets: Typically quieter.
• Pressure-Assisted Low-Flow Toilets: Can be louder due to the pressurized flush.

Advantages of Low Flow Toilets

1. Water and Cost Savings: Using less water means lower utility bills. Over time, the savings can be substantial.
2. Environmental Benefits: Conserving water helps protect resources and reduces wastewater that needs treatment.
3. Modern Designs: Improved flushing technology ensures performance without sacrificing efficiency.
4. Rebates and Incentives: Many local water utilities offer rebates for installing WaterSense-labeled toilets.

Disadvantages of Low Flow Toilets

1. Multiple Flushes: Some older low-flow models may require two flushes for solid waste, negating water savings.
2. Potential for Clogging: Because less water is used, there’s a slightly higher risk of clogs, especially in older plumbing systems.
3. Initial Cost: Low-flow toilets may cost more upfront than standard models, though they pay off over time with water savings.

Choosing the Right Low Flow Toilet

When buying a low-flow toilet, keep these tips in mind:

• Look for WaterSense Certification: WaterSense-labeled toilets are tested for efficiency and performance. They use 20% less water than standard models.
• Check the MaP Score: Toilets with a MaP rating of 500 grams or higher are excellent at waste removal.
• Consider Dual-Flush Options: Dual-flush toilets let you choose a lower water volume for liquid waste and a higher volume for solids.
• Don’t Assume Higher Price Equals Better Quality: Many affordable models perform just as well as expensive ones.

Retrofitting Your Current Toilet

If you’re not ready to invest in a new toilet, you can try these retrofitting options to reduce water use:

1. Displacement Devices: Place a plastic bottle or water-filled bag in the tank to reduce the water per flush.
2. Displacement Dams: These plastic devices wedge into the tank to limit water flow.
3. Early-Close Flappers: Adjustable flappers that stop water flow before the tank empties completely.

Note: These retrofits are temporary solutions and may affect flushing performance. New low-flow toilets are more efficient in the long run.

Are Low Flow Toilets Worth It?

Absolutely! Modern low-flow toilets have come a long way since the 1990s. They offer reliable performance, save water, and reduce costs. If every home upgraded to low-flow toilets, the U.S. could save hundreds of billions of gallons of water each year. Plus, many water utilities offer rebates, making the switch even more affordable.

Final Thoughts

Low-flow toilets are a smart investment for both your wallet and the planet. With improved designs, they’re just as effective as traditional toilets but use far less water. Whether you’re looking to upgrade your bathroom or reduce your environmental footprint, a low-flow toilet is a step in the right direction.

Call 1-Tom-Plumber 

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