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Toilet water usage and cost

The toilets do use considerable amounts of water.

If you want to lower you water usage at home, you should really have a look to the water usage of your toilet.

How much water does a toilet use

If you want to know how much water your toilet is using, you just need to take some simple steps.

toilet water usage

> First make sure that nobody else is using water at home (e.g. tap water, washing machine,…)

> Take note of the value on your meter

> Flush the toilet

> Take note again of the new value on your water meter

> Substract the values

If you need more information about what a water meter is or how to read a water meter, we recommend to watch this YouTube video where we explain how to read a water meter.

How to read a water meter

Toilet water cost calculator

Once you know your toilet’s water consumption per flush, you can estimate the daily water usage based on how often the toilet is being used. 

After you have found out your toilet’s daily water usage, you can use the calculator below to estimate the water usage and water cost over a year.

You just need to adjust the values in the PARAMETERS section to your requirements and the calculator will automatically display the RESULTS section.


To use the calculator you need to know how much you are paying for cubic meter, gallon or any other water measurement unit that it is used in your country.

If you don’t have this information, have a look to the information we provide below.

How much does water cost

On your contract or water bill you should be able to find how much you are paying per every cubic meter or every gallon of water you use.

The water cost will depend on what country or city you live.

According to this water prizes survey article, the areas with the most expensive water are North America and Western Europe. While areas like South Asia, Middle East and North Africa have the cheapest water. 

On to this other european cities water prize article, it can be appreciated the big prize difference between countries in Europe. From Italy with the cheapest water cost and 0.40 euro per cubic meter to Norway with the most expensive water at 5.51 euro per liter.

Liters to US gallons calculator

We know that not everyone uses liters so if you are from the US you can use this calculator to convert liters to US gallons.


Liters to UK gallons calculator

Equally, if you are from the UK you can use this calculator to convert liters to UK gallons.


Water usage calculators

A few other examples from our ‘Water usage and water cost calculators‘ page that may be of your interest:

How to use less water at home

We have a page dedicated to explain how to save water at home.

As an example, see below a few examples and videos on how to use less water at home and save money.

How to install a water saving tap aerator

You may want also to have a look this YouTube video where we explain how much water does a tap aerator save and how to install a water saving tap aerator.

Water saving tap aerator

How much water does a dishwasher save

Additionally, you may want to have a look the the post where we review what is more efficient, washing the dishes by hand or using the dishwasher.

Dishwasher electricity and water usage

Proven ways to save water at home

If you are looking for ideas to save water at home, have a look to this YouTube video were we show some useful tips to reduce the water usage at home and decrease the water bill. 

Proven ways to save water at home

Toilets and he importance of water conservation

Water conservation can be defined as the decision and the act of using less water 

Water conservation both benefit you and the environment 

The act of saving and conserving water does benefit you because you will be paying less on your water bills. 

And it also does benefit the environment because conserving water prevents any unnecessary waste of natural resources.

Now, at individual level it may not look worth to try to save a few litres or gallons here or there. 

Still, every little counts and if hundreds or thousands of us do save a little every time, it will make an important contribution towards conserving our natural resources.

Water conservation calculator

If we could reduce our toilets water usage, even a very small amount, it would make a big impact on preserving our natural resources.


For example, if 9000 households would manage to save as little as 5 liters of water per day:

> Collectively, we would be saving over 16,000,000 liters of water per year!

> Collectively, assuming a cost of 2 euro per cubic meter of water, we would be saving nearly 33,000 euro per year!

It is clear that small water savings do really count when looking into the bigger picture.
How to save
How to save
How to earn
How to earn


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