Do Water Filters Need Electricity? (How Many Watts Used)

There are many different water filters on the market, and deciding which one is right for your home can be difficult. Water filters do not always need electricity to function.

Some filters rely on water pressure to pull water through the filter, while others rely on chemical reactions to purify the water.

In this blog post, I will discuss whether or not water filters need electricity and help you choose the right one for your needs.

Which Types Of Water Filters Require Electricity?

The following water filters require electricity to function:

  • Reverse osmosis systems
  • Deionization filters
  • UV water purifiers

Let’s discuss each of these types of filters in more detail:

Reverse Osmosis System

Reverse osmosis systems use a pump to force water through a fine filter. This type of system is efficient in the removal of dissolved minerals from water. The electricity is used to power the pump.

Deionisation Filter

Deionisation filters use electricity to remove charged particles from water. This type of filter is typically used to remove dissolved minerals from water.

The DI removes mineral ions such as calcium, magnesium, iron, sodium, and anions like sulfate and chloride.

UV Water Purifier

UV water purifiers use ultraviolet light to kill bacteria and viruses in water. A UV lamp produces UV light, which requires electricity to function.

These filters use pumps or other mechanisms to remove impurities from your water. While they are effective at purifying your water, they can be expensive to operate and may not be the best option for everyone.

How Much Electricity Does A Water Filter Consume?

A typical water purifier uses between 25 and 50 watts of power per hour. Therefore, the cost of running a water purifier will depend on the electricity in your area and the type and size of the water purifier you have.

To calculate the cost of running your water purifier, simply multiply the number of hours it is used per day by the number of watts it uses.

For example, if you have a water purifier that uses 50 watts and you use it for 24 hours per day, the cost of running it would be $0.12 per day.

Are There Electricity-Free Water Filters Available

There are water filters available that do not require electricity to function. The following types of water filters do not require electricity:

Gravity Filters

These filters use gravity to pull water through a series of filters. As the water passes through the filters, impurities are removed. Gravity filters can filter large quantities of water and are often used in emergencies.

Chemical Filters

Chemical filters use chemical reactions to purify water. These filters typically rely on chlorine or iodine to kill bacteria and viruses in water.

Chemical filters are not as effective as other filters, but they are simple to use and require no electricity.

Mechanical Filters

mechanical water filter

Mechanical filtration removes particles in two ways: surface and depth filtration. Surface filtration, a sieving procedure that traps big particles on the top or leading surface of the filter, removes many particles.

Smaller particles penetrate through the surface layer and are filtered out later by depth filtration.

Tiny particles get caught when they pass through a filter’s progressively smaller holes with depth filtering.

How To Filter Water Without Electricity

There are many ways to filter water without electricity. Some of the most common methods include:


Boiling is a great way to purify water. But, first, you need to bring the water to a boil and let it cool before drinking. This will kill any bacteria or viruses in the water.

Using Chlorine Bleach

Adding a small amount of chlorine bleach to water is a great way to purify it. Simply add two drops of chlorine bleach per gallon of water and let it sit for 30 minutes. After that, the water will be safe for drinking.

Gravity Filters

Gravity filters are a great way to purify water. These filters use gravity to pull water through a series of filters. As the water passes through the filters, impurities are removed.

Calcium Hypochlorite

Calcium hypochlorite can be used to purify water. This chemical is very effective at killing bacteria and viruses in water. You just need to add a small amount of calcium hypochlorite to the water and let it sit for 30 minutes.

UV Purification

UV purification is another popular method of purifying water. This method uses ultraviolet light to kill bacteria and viruses in water. UV purifiers are very effective, but they do require electricity to operate.

Using Solar Still

Solar stills are a great way to purify water. This method uses the sun’s energy to evaporate water and condense it into pure form. Solar stills are very effective, but they require time and effort to set up.


Pasteurization is a great way to purify water. This method involves heating the water to a certain temperature for a while. Pasteurization will kill any bacteria or viruses in the water.

You can use the Water Pasteurization Indicator to check if the water has been pasteurized properly.

Recommended Water Filter System For The Home

Your home’s best water filter system will depend on your specific needs. For example, if you are looking for a water purifier that does not require electricity, you should consider a gravity filter or a chemical filter.

On the other hand, if you are looking for a very effective water purifier, you should consider a UV one.

I would recommend the ZeroWater 7 Cup Water Filter Jug. This water filter system is very effective at purifying water.

It uses a five-stage filtration system to remove impurities from water. It is National Sanitation Foundation (NSF) certified, and therefore it effectively removes over 99% of all impurities from water.

In addition, this water filter system does not require electricity to operate and is very easy to use.

Key Features Of The ZeroWater, 7 Cup Water Filter Jug:

do water filters use electricity

Five-stage filtration system: The five-stage filtration system effectively removes impurities from water. As a result, you’ll get cleaner, better-tasting water. Rather than relying just on carbon filtration, these filters use Ion Exchange Technology to minimize contaminants.

7 cup capacity: This water filter jug has a capacity of seven cups, making it perfect for small families.

Electronic tester included: The electronic tester included with the jug lets you know when it’s time to replace the filters.

No electricity required: This water filter system does not require electricity. This makes it a great option for those who want to purify water without electricity.

Size: The jug is compact and can easily be stored in a fridge or cupboard. It is designed to fit in standard UK fridge doors. It is slim and thus saves space.

Water quality and water filter: The jug includes a water quality meter that allows you to test your water to see how effective the filters are. The filter has around six months and can be replaced easily.

Ease of Use: The jug is very easy to use. Simply fill it with water and let the filters do their job.

Sealed lid and reservoir: The lid is sealed to prevent leaks, and the reservoir keeps water fresh.

The sealed seal also gives you the immediate pouring ability, whereby you can pour the water that has already been filtered without having to worry about spilling it.


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