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It may surprise you to know that the toilet is the single largest consuming water device in the home. Over 47% of water usage in the average home happens in the bathroom, and over 34% of can be attributed to the toilet alone. This is often the reason for the over-the-roof water bill you receive monthly. There is a need to reduce the rate of toilet water usage, as it will greatly reduce your overall utility bill. If you are one who is particular about the environment, then reducing your toilet water usage will contribute effectively to this cause. The main reason why people really do not care about toilet water usage is because they do not know the figurative amount of water our toilets consume. We will expound on this and provide you with all the figures you need. We will also provide tips for reducing the water usage in your toilet. After reading this, you will be equipped with more than enough knowledge about toilet water usage.

How much water do our toilets consume?

Toilets consume a lot of water while flushing (credit – Besttoiletguide.net)

The usage of toilet water varies significantly. If you are using an older toilet, your toilet may be consuming between 3.5 and 7 gallons of water per flush. To put things in perspective, if you follow the 8 glasses of water per day rule, then you drink a meagre half a gallon of water every day. Assuming a family of four, where each person flushes five times a day. Then we are looking at between 70 and 140 gallons of water spent by the toilet every single day. Reducing toilet water usage can lead to significant savings of up to hundreds of dollars on your part, depending on your usage volume. Toilet manufacturers label their toilet water usage volume per flush inside the tank or on the body of the toilet. You can check the usage volume of your toilet by looking in any of these places.

Are there any recent developments?

WaterSense ratings are becoming increasingly important (Credit – conserveh2o.org)

Federal standards have been put in place recently to ensure that new toilets can only use up to 1.6 gallons per flush (GPF). There are high-efficiency toilets which can use only 1.28 GPF. These high-efficiency toilets have been on the rise recently. Watersense, a voluntary organization program sponsored by the U.S. Environmental Protection Agency (EPA), has made it easy to identify water-efficient products. It has a labelling system that can only be earned by toilets that have been put through the extensive test and that use no more than 1.28 gallons per flush (GPF). Getting a High efficient toilet is a way to go and these toilets can range from $100-400; installation fees included. The payback period on savings made by this toilet can range from one to three years.

5 tips for reducing toilet water usage

  • Fix leaks in your toilet: Having a leaky toilet may cost you up to 9.5 gallons of water per day. You need to check for leaks in your toilet and get them fixed if you are serious about cutting down on that toilet water usage.
  • Transform your toilet with a brick in the tank: Many people do not know this, but displacing water in the toilet is one of the most cost-effective ways to reduce toilet water usage. All you have to do is put a brick in your tank and this can save several gallons of flush per day.
  • Install a dual flusher: If your toilet is really old, then installing a dual flusher may be the way to go. These toilets have two modes – one for flushing liquid waste and another for solid waste. The liquid mode uses just 0.6 gallons of water per flush, while the solid can be up to 1.6 gallons per flush. These products are usually certified by Water sense, so you need to ensure you are purchasing a certified one. The last thing you want is an uncertified product where you end up flushing multiple times to get your waste to go through.
  • Use the European style: The European toilet style features a urine-separation toilet that can save up on your water usage.
  • Go waterless: If you are feeling a bit extreme, then you can decide to get rid of water completely. You can decide to purchase compositing toilets designed for homes or rustic cabins that do not possess septic tanks. These types of “toilets” do not require water at all can totally increase your savings on toilet water usage. The composite toilet, for instance, has a holding tank which is equipped with aerobic microbes which have the ability to easily break down your different waste products into fertilizer which can be used in your garden. So, it is really a win-win.


Toilet water usage is something that everyone needs to pay attention to. Reducing the cost of water spent flushing toilets is an easy way to decrease your overall monthly bills. Following the tips explained here will ensure that voluminous toilet water usage is a thing of the past.