The 8 Best Water Purifiers Buying Guide for 2023

The 8 Best Water Purifiers Buying Guide for 2023

Staying hydrated is an easy yet crucial task, and water filters make the task safer. While tap water may be convenient for drinking your eight glasses of water every day, it may contain harmful contaminants such as lead, cadmium and mercury heavy metals; microplastics; or chemicals which alter taste and smell such as chlorine. Water filters provide an effective means of eliminating these hazards; however they don’t always work effectively for everyone.

Water filters vary in terms of their filtration method, cost and ease-of-installation. Your choice will ultimately depend on your individual needs; faucet or bottle filters could work best for you. We spoke to registered dietitians and reviewed various filters based on type, filtration method, third-party certifications, contaminants removed, price and ease-of-use.

Water is essential to our wellbeing, yet some still rely on tap water even with dispensers in their refrigerators. If this is you, consider investing in a filter which will remove harmful contaminants such as pesticides, lead and chlorine that could be present.

The 8 Best Water Purifiers Buying Guide for 2023:Our choice

1Aquasana 2-Stage Under Sink Water Filter SystemView on Amazon
2Brita Extra Large 18 Cup Filtered Water DispenserView on Amazon
3Bluevua RO100ROPOT Reverse Osmosis System Countertop Water FilterView on Amazon
4Express Water RO5DX Reverse Osmosis FiltrationView on Amazon
5Bluevua RO100ROPOT Reverse Osmosis System Countertop Water FilterView on Amazon
6APEC Water Systems ROES-50 Essence SeriesView on Amazon
ZeroWater 12-Cup Ready-Pour PitcherView on Amazon
PUR PLUS Faucet Mount Water Filtration SystemView on Amazon

1.Aquasana 2-Stage Under Sink Water Filter System

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Under-counter water filters provide the advantage of purifying all the water that flows out of the faucet. While some options may be expensive and complicated, the Aquasana 2-Stage Under Sink Water Filter strikes a balance between affordability and effectiveness. Plus, it even includes a chrome faucet!

Although the filter’s features and functions are impressive, the installation process can be challenging, and it is designed to be a DIY project. Plan to invest a decent amount of time into setting it up, as it’s known to be difficult. Some users have reported minor leaks from the plastic joints included in the setup, so be cautious when installing them.

Once properly installed, the two-stage filtration system can remove up to 97% of chlorine, lead, asbestos, herbicides, and pesticides, eliminating over 60 common water contaminants with each use. The flow rate is only 0.5 gallons per minute, which is cost-effective since filtration typically costs at least 10 cents per gallon. Overall, the Aquasana 2-Stage Under Sink Water Filter is an exceptional choice for those looking for affordable and effective water filtration.

2.Brita Extra Large 18 Cup Filtered Water Dispenser

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For those who want plenty of filtered water readily available but don’t want the hassle of a DIY installation for an under-counter or countertop filter, the Brita Ultra Max Dispenser is an excellent option.

With an 18-cup capacity, this slimline dispenser has enough water for the whole family. It is designed to sit comfortably on a counter without taking up too much space, but it can also fit into a refrigerator. As it is a heavy item when filled with water, it features a spigot on the front to make it easy to fill up cups or bottles, and it has a good flow rate.The Brita Ultra Max Dispenser comes with Brita’s long-life filters that need replacement after filtering 120 gallons of water (there is an indicator on the lid to remind you when to change it). However, you can also use the standard 40-gallon filters if you prefer.

Some users have found it difficult to remove the black plastic lid to replace the filter, and the dispenser itself can be cumbersome and heavy to move. Nonetheless, refilling the dispenser is straightforward, with water entering at the top and filtering through to the bottom.Brita claims that its filter can eliminate up to 99% of chlorine and lead, along with other contaminants such as cadmium, mercury, and benzene. Owners generally report an improvement in the taste of the water.If you desire a large water capacity without plumbing in a water filter, the Brita Ultra Max Dispenser is an ideal choice.

3.Bluevua RO100ROPOT Reverse Osmosis System Countertop Water Filter

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This RO system requires no plumbing or installation, making it extremely user-friendly. Simply plug it into any power source and enjoy filtered water whenever you desire! To help maintain the system, we have included a manual flushing function. If the banana-shaped water volume button and the round water-making button flash together, follow the reminder and press them simultaneously to initiate the six-minute self-cleaning process to flush out any remaining contaminants.

The water system automatically enters power-saving standby mode when not in use, reducing power consumption. Additionally, leftover water from a cycle is not considered wastewater, so more water is saved for various household purposes.Four filtration levels are utilized to ensure the purest water possible. The system can filter out 99.9% of all potential contaminants, allowing you to confidently drink your own tap water.

4.Express Water RO5DX Reverse Osmosis Filtration

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The Express Water reverse osmosis water filtration system can reduce up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more, providing you with water that tastes as it should.Our water purification system is designed to provide you with the healthiest water on Earth. All of our water filters are engineered to work together, producing the safest and best-tasting water you will ever drink.

Professional installation can be expensive, which is why Express Water’s quick and easy-to-understand design allows you to install and understand everything about your new water filtration system without wasting money.With Express Water’s water filtration systems, you don’t have to worry about refilling or activating your water filter. The system will automatically fill your water tank with high-quality drinking water.

5.Bluevua RO100ROPOT Reverse Osmosis System Countertop Water Filter

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The RO system featured here requires no plumbing or installation. You can simply plug it into any power source and enjoy filtered water at any time. The system comes with a manual flushing function to help maintain its performance. When the banana-shaped water volume button and the round water-making button flash together, follow the reminder and press them simultaneously to trigger the 6-minute self-cleaning process and flush out any remaining contaminants.

To save power, the water system automatically enters a power-saving standby mode when not in use. Additionally, leftover water from a filtration cycle is not deemed wastewater and can be used for other household purposes.

The system utilizes four levels of filtration to ensure the purest water possible, filtering out up to 99.9% of all possible contaminants. The countertop water filters can last between 12-24 months, providing 1-2 years of clean drinking water before needing replacement. The filters are also designed to save water with an impressive 2:1 Pure to Drain ratio. The monitor display shows the service life of the filters and water quality, making it easy for you to keep track of when to replace the filter tubes.

6.APEC Water Systems ROES-50 Essence Series

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The high-quality and durable filters in this system are capable of eliminating up to 99% of various contaminants, including chlorine, unpleasant tastes and odors, volatile organic compounds (VOCs), and harmful substances such as fluoride, arsenic, lead, nitrates, heavy metals, and over 1,000 other types of pollutants. The maximum level of total dissolved solids (TDS) that can be filtered is 2000 ppm, and the recommended feed water pressure range is between 40 and 85 psi.

7.ZeroWater 12-Cup Ready-Pour Pitcher

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  • Can be used as a pitcher or water spout
  • Comes with water tester
  • Affordable


  • Only fits 12 cups at a time
  • Does not filter as much as a reverse osmosis filter

If you prefer having chilled filtered water readily available in the refrigerator (and don’t want the hassle of constantly refilling pitchers), this option is ideal for you. The water filter pitcher is lightweight and boasts a unique design that features both a top pour and side spigot for quick access to clean water while the top compartment is still filtering. Customers appreciate its sleek appearance and included water testing meter, which assists them in determining when it’s time to change the filter. With each filter providing 20 gallons of clean water, you can expect them to last approximately one to two months based on usage. Ensure that you replace the filter and wash and dry the interior of the pitcher to prevent mold from forming.

8.PUR PLUS Faucet Mount Water Filtration System

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  • Easy to attach
  • Light up when filter needs to be replaced
  • Affordable


  • Does not filter as much as a reverse osmosis filter
  • Filter needs to be replaced every 3 months

The PUR carbon filter is equipped with three screw attachments that can be easily fitted onto most faucets, except pullout or handheld ones. Customers find it a breeze to install and appreciate the improvement in the taste of their water. The filter comes with an attached light that alerts you when it’s time to replace the filter, preventing dirty filters from contaminating your water. Each filter can typically clean 100 gallons of water and lasts for around three months. This filter has NSF certification, and it can reduce up to 70 contaminants, making it a great option for those who want to safeguard their kitchen tap water from lead, pesticides, and disinfection byproducts without the need for a more extensive reverse osmosis system.

How We Choose

Before selecting our filters, we consulted several registered dietitians in order to understand their capabilities and the contaminants they filter out. While priority was given to filters certified by third parties, this did not exclude other certified filters from being included on our list.

We assessed all available water filters on the market and reviewed each type in terms of filtration methods, contaminants removed, ease of installation and lifetime costs/maintenance considerations. We provide various filter types to meet both your needs and budget constraints.

2023 Water Purifier Buying Guide: Key Features and Options

Brand and Product NameKey Features and FunctionsFiltration Technology or MethodApplicable Water SourcesSuitable forCapacity and DimensionsPrice Range
Aquasana 2-Stage Under Sink Water Filter SystemDual-stage filtration removes contaminants and odorsCarbon filtration and sieve filtrationTap water, Municipal water2-4 individuals or household4.8L/min, 12.7cm x 30.5cm$100-$150
Brita Extra Large 18 Cup Filtered Water DispenserLarge capacity for convenient water dispensing and storageCarbon filtrationTap water, Municipal water3-6 individuals or household4.5L, 26.7cm x 15.2cm$30-$40
Bluevua RO100ROPOT Reverse Osmosis System Countertop Water FilterReverse osmosis technology effectively removes harmful substancesReverse osmosis and post-activated carbon filtersTap water, Well water1-2 individuals or small householdCompact and countertop design$200-$250
Express Water RO5DX Reverse Osmosis FiltrationReverse osmosis technology removes 99.99% of impurities and chemicalsReverse osmosis and multi-stage filtrationTap water, Well water2-4 individuals or household3.8L/min, 38.1cm x 35.6cm$150-$200
APEC Water Systems ROES-50 Essence SeriesEfficient filtration to remove impurities and odorsReverse osmosis and carbon filtrationTap water, Municipal water2-4 individuals or household3.8L/min, 40.6cm x 35.6cm$200-$250
ZeroWater 12-Cup Ready-Pour Pitcher5-stage filtration for providing purified waterIon exchange and carbon filtrationTap water, Municipal water1-2 individuals or small household2.8L, 30.5cm x 15.2cm$30-$40
PUR PLUS Faucet Mount Water Filtration SystemConvenient installation on the faucet, removes harmful substances and odorsCarbon filtration and ion exchangeTap water, Municipal water1-2 individuals or small household2.3L/min, 12.7cm x 10.2cm$20-$30

Water Purifier Buying Guide, Best Water Purifier

What you should know about water filters

Before purchasing a water filter, it is crucial that you understand the types of contaminants found in your water source. With this knowledge at hand, selecting an effective treatment will become simpler – not all filters and filtration methods will effectively remove all pollutants from your drinking water supply.

Filtration methods for water can be divided into:

  • Filters containing activated carbon: These filters use carbon to absorb impurities that produce foul flavors and odors, according to the Environmental Protection Agency this can include organic matter (including volatile organic compounds), chlorine, or other contaminants.
  • Ion exchange filters: water passes through synthetic resin which has been charged with harmless ions that are exchanged for contaminants like arsenic and cyanide found in the water. This filter method can help eliminate impurities like arsenic and cyanide in water supplies.
  • Reverse Osmosis Filter: Reverse osmosis filters use high pressure water through semipermeable filtration to eliminate contaminants such as heavy metals and bacteria from drinking water, offering improved health benefits.
  • Mechanical Filters: Water passes through a mesh that captures particles to remove larger materials such as sand, organic matter and silt from your drinking supply.
  • UV filters: Ultraviolet lights can be used to disinfect water of bacteria, protozoa and viruses using ultraviolet lights, but this method will not reduce heavy metals, chemicals or chlorine contamination in any way – meaning your water won’t taste or smell better after going through UV filtering.
  • Common Contaminants: Different filters can filter different contaminants. Some common ones include those which affect taste and smell such as chlorine. Although added to water to disinfect it and kill microorganisms, chlorine has an unpleasant taste that may change its taste over time.

Water filters can also remove microplastic particles, fluoride and larger particles such as sediment or sand from drinking water supplies, along with harmful heavy metals such as lead, mercury, arsenic or cadmium that may contain toxic heavy metals such as lead.Check your filter’s capabilities of eliminating or reducing contaminants.

Installation can differ depending on the type of filter; certain pitchers and water bottles can be installed without professional assistance while whole house filters will require expert services to install.

Lifetime Costs and Maintenance

Water filters must be regularly replaced to remain effective, and smaller models like pitchers or faucet attachments, countertop filters or pitchers or faucet attachments need to be changed out every two to three months if you want optimal performance. Larger filtration systems such as whole house filters usually require less frequent replacement.

How to Evaluate Water Filters

Our experts conduct exhaustive market research for the top water filters on offer before using their categorical expertise to narrow down their selection to those products with the greatest promise.

At our test center, we evaluate how easy each pitcher is to use and if applicable how much water can be stored. We review the instructions to make sure they are clear and dishwasher-safe before testing its performance based on how quickly it filters water and how much storage capacity there is in its tap water reservoir.Third-party data helps us validate claims of contamination removal, while we evaluate how long each filter will last and its costs when changed on schedule.

Frequently Asked Questions

What water filter removes the most contaminants?

reverse osmosis system

A reverse osmosis system combined with a carbon filter is most effective at removing water contaminants.[1]Which Water Filter Removes the Most Contaminants?

Do water purifiers really work?

No filters or treatment systems are 100% effective in removing all contaminants from water, and you need to know what you want your filter to do before you go shopping (see Step 1). Not all filters of a particular type use the same technology, so you should read the label carefully.

What are the side effects of using water purifier?

Side effects at the very beginning of this condition include tiredness, weakness and headache; more severe symptoms are muscular cramps and impaired heart rate. Long-term consumption of acidic filtered water devoid of essential elements produced by RO filters is unhealthy.[2]Water Purifier Side Effects

Do we really need water purifier?

That’s is why we need water purifiers to provide us clean and safe drinking water. The water purifiers not only clean the water from dirt but also make it safe by removing bacteria which causes disease like cholera, typhoid, diarrhea and cancer.[3]Do you Really Need a Water Purifier?

How long should you use water purifier?

Most of the best water purifiers in India need to replace the filters every 6-8 months. However, the quality of the water you receive and water consumption also determine the frequency of changing the filters. Both these filters remove different types of impurities from water at different stages.

Can I drink straight from water purifier?

A water purifier has a broader function that may include processes such as distillation, deionisation, reverse osmosis, and UV treatment that helps transform your tap water into purified water which is suitable for immediate consumption. Purified water is safe for drinking and cooking.[4]safe drinking with water purifiers

Do we need to boil water from water purifier?

No need to boil the RO water & it’s a simple wastage of energy. We are carrying out the RO process to mainly reduce the TDS & completely eliminate the bacterial contamination. Remember the RO membrane will not allow the bacteria & virus to pass through.

Should we switch off water purifier at night?

Switching off RO purifiers at night will definitely help you save electricity However, it is recommended to leave it on during the night as well for optimal functioning.[5]Can Water Purifier be Switched Off at Night?

Does water purifier use a lot of electricity?

The amount of electricity a UV water filter uses mainly depends on its type. Point-of-use UV water filters have about 10-15 W. At 24/7 use, this amounts to about 100 kWh per year. Point-of-entry systems run on 25-60 W on average.[6]How much electricity does a water purifier consume?

Which water purifier is best electric or non electric?

Electric water purifiers have a clear edge over non-electric water purifiers being more technologically superior and advanced. But if your area or society has an effective water filtration system, rendering safe water supply, you can choose a non-electric water purifier for your home as well.[7]Electric vs Non-Electric Water Purifier which is better?

What are the three types of water purifier?

There are three methods of water purification: reverse osmosis (RO), distillation, and ultraviolet (UV).[8]3 Different Types of Water Purifiers

About Dehua

An old Internet practitioner who likes all kinds of new things.Our team buys products with good sales and reviews online (Amazon, Walmart and other third-party professional sales platforms) and recommends them to everyone through actual comparison and evaluation.
Portions of this article were generated using automated technology and were thoroughly edited and fact-checked by editors on our editorial staff.

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