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Low Flow Toilets vs Regular Toilets

low flow toilets vs regular toilets
Written by Joe Richter

Low Flow Toilet: Pros and Cons

Pros Cons
1. Requires less water 1. Higher installation costs
2. Lower water bills 2. Pipes can clog
3. Requires low maintenance
4. Environment friendly
5. Saves space

Regular Toilet: Pros and Cons

Pros Cons
1. Clogs pipes rarely 1. Higher water bills
2.Lower costs of installation 2. Lower cost installation
3. Lower priced 3.Not environment friendly
4.Takes up space

Low Flow Toilets vs Regular Toilets – What Are the Differences?



In terms of low flow toilets, the outlet is found adjacent to the bowl center. On the other hand, for regular toilets, the outlet is located at the rear end. This means it requires less water to push the waste into the exit direction.

Water Line

Water line

Low flow toilets result in more water near the bowl’s front compared to regular flow toilets. Waste is much easily transported into the outlet due to this as most of the bowl’s base is sinked under the water.

Toilet Tank

Toilet Tank

Regular flow toilets come with a smaller flush valve relative to low flush toilets.

Flushing System

Flushing System

Far less water is used by low flow toilets than the regular ones to remove waste. To carry out a powerful flushing, some of the low flow toilets might feature an additional hole for water supply located near the bowl’s outlet.

Water Consumption

Low Flow vs Regular Toilets

Low-flow toilets use only 1.6gpf of water on average compared to the regular 3.5 to 7 gpf. They’re even designed with dual flushes. One for removing liquid wastes and the other for the solids.


Low Flow vs Regular Toilets

Like most advanced technology, and efficient home fixtures, low flow toilets are costlier to install than regular toilets. On average, they come for about $510


Low Flow vs Regular Toilets

Since low flow toilets use less water to drive away the waste from the toilet bowls, they are more likely to clog the pipes. Flushing the toilet frequently could also be a required practice. This is still more efficient than traditional toilets because even if you need to flush more than once, it typically won’t be more than two flushes. We would still be behind traditional toilets by about four gallons.

Water Consumed by Toilets Per Flush

Toilet Types Consumption by Toilets (Gallons/ Flush) Average Flushes/ Day  Gallons Used Per Person/ Year
Old 3.5 5 6,388
Regular 1.6 5 2,920
Efficient 1.28 5 2,336


Do Low Flow Toilets Clog More Easily?

Yes. Since little water is used to drive the wastes through the drains, in the long term, your pipes may clog. But there’s nothing to worry as frequent flushing (usually twice) helps to keep away the clogging problem.

Are Low Flow and High-Efficiency Toilets the Same?

Yes. Low flow toilets (also known as the high efficiency toilet) use considerably less water than a regular full flush toilet. Low-flows use up about 1.1 to 1.3 gallons only per flush, compared to the 1.6 gallons or more of regular toilets

About the author

Joe Richter

Academically brilliant, technically flawless and professionally successful, Joe Richter is Toiletsguide’s head of the market research team. He studied Business Studies from the University of Houston and started his professional career as a Market Data Compliance Analyst in the stock market. He’s been following the updates on the bathroomware industries for a long time now and his elaborate studies have profoundly enriched his knowledge on the newer trends of toilets, showers, and related fittings. Apart from that, Joe goes around the street with his Leica Q2 taking pictures of people and buildings. He does most of the photography of the site.

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