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Dishwasher water usage and cost
The new dishwasher models are quite efficient and use a very low amount of water.
Still, in case of doubts or if you are considering to purchase a new dishwasher, it is worth to find out the water usage and the water cost.
TABLE OF CONTENTS – QUICK NAVIGATION
1. How much water does a dishwasher use
1.1. How to read a water meter
2. Dishwasher water cost calculator
2.2. Liters to US gallons calculator
2.3. Liters to UK gallons calculator
3. How to use less water at home
3.1. How to install a shower water flow regulation valve
3.2. How to install a water saving tap aerator
3.3. Proven ways to save water at home
4.1. How much water does a dishwasher use
4.2. How much water does a dishwasher use per load
4.3. How much water does a dishwasher use per cycle
4.4. How much water does a dishwasher use
4.5. How much water does a dishwasher save
How much water does a dishwasher use
Very old dishwasher models were using up to 25 liters of water per load while the newest and most efficient dishwashers use around 9 liters per load.
But, depending on the model and the program used to wash the dishes, the water usage of a dishwasher can vary considerably.
There are two ways to find out a dishwasher water consumption.
> The first way it is to browse on the internet for the dishwasher specifications. It is a simple as to use your favorite browser to search for the dishwasher model followed by ‘specifications’ or ‘ water consumption’.
> The second way is to take the water meter readings before and after a dishwasher cycle. If you are not sure how to do it, below we are sharing details about how to read a water meter and what a cubic meter of water is.
In any case, once you know how much water does your dishwasher consume and how much you are paying to your water provider for every liter, or gallon,… it is quite simple to calculate the water cost.
According to it’s specifications, our dishwasher uses 2660 liters of water per year. As we are paying to our water provider 2 euro per every cubic meter of water we consume, this means that using the dishwasher will add around 5 euro to our yearly water bill.
2660 litres / 1000 = 2,660 cubic meters of water
2,666 cubic meters x 2 euro per cubic meter = 5,32 euro
How to read a water meter
Because one image is worth a thousand words, rather than providing long explanations we recommend to watch this YouTube video before moving ahead.
Dishwasher water cost calculator
The calculator below can be used to estimate the dishwasher water cost per cycle and per 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:
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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 shower water flow regulation valve
If you are interested on learning how to reduce your bathroom’s water consumption, have a look this post on how to reduce your shower’s water usage by installing a flow reduction valve.
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.
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.
Dishwasher water usage FAQ
How much water does a dishwasher use
The water usage of a dishwasher will depend on the model.
Rather than giving you a broad estimation, you should search on the internet for the water usage of the dishwasher model you are interested on.
We have extracted the picture below from the Amazon website. As you can see, one of the pictures that they have made available it is the dishwasher energy label.
On the dishwasher energy label you it is also described how much water will this dishwasher use per load.
For this specific model, it will use 7,5 liters per load.
How much water does a dishwasher use per load
It does depend on the model and the settings.
A dishwasher using an ECO cycle will use less energy and water than a dishwasher using the STANDARD or AUTO cycles.
Still, you can get an approximation by looking for the water usage on the dishwasher energy label or the specifications sheet.
How much water does a dishwasher used per cycle
Load and cycle are exchangeable terms so the answer we have provided to the questions above is also applicable to this question.
How much hot water does a dishwasher use
Most of the newer dishwashers have a heat pump that regulates the temperature of the water to the selected program.
Therefore, they do not use hot water and even the manufacturers do recommend not to use hot water.
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.
Dishwashers and the 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 dishwashers 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.
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