If you are looking to kick plastic bottles and invest in a more sustainable way of drinking filtered water, then water filters are the way to go. Tap water filters are the solution to cleaner, clearer and better-tasting water, and it does not need to cost you a fortune. There are many types of water filters on the market that will protect you against potentially harmful contaminants in your water supply.
Before you look into buying a water filter, consider what your needs are. For example, if you are in the city, chances are you only need a filter to cleanse your water from contaminants such as chlorine, pesticides, and mercury. However, if your water has a bad odour or a hazy appearance, consider getting a filter with a 5 or 6-stage filtration system.
After careful research, here is our pick of the best tap water filters on the market in 2021.
The best tap water filters at a glance:
Best long-lasting water filter: WFM Water Filter System
Editor's pick: Deluxe FinerFilters Water Filter
Best value tap water filter: FinerFilters Water Tap Filter Kit_**_
The best budget water tap filter: Finest-Filters Water Tap Filter Kit
Best tap water filter with a 5-stage system: iSpring RCC7 NSF 5-Stage Filtration System
Best tap water filter with a 6-stage system: iSpring RCC7AK 6-Stage Filter System
Best water filter tap attachment: Waterdrop WD-FC-01 NSF
Best counter-top tap water filter dispenser: APEX Countertop Drinking Water Filter
Best water filter pitcher: Brita Everyday Filter Pitcher
The best water filter on the go: LifeStraw® Go Water Bottle with Filter
What type of water filter is best?
Different types of tap water filters work well for different uses depending on how much filtered water you require, what you need it for and how long you would like the filtration system to last. Here are the three main systems:
Under-the-sink water filter fixtures:
Under-the-sink water filtration systems are the best tap water filters for cleaning and purifying water compared to filter jugs and bottles. If you dislike the taste of your tap water or are looking to eliminate any contaminants, then these fixtures will be a good solution. There are budget options that last for up to six months or more long-lasting filter than can last up to three years. To fit these under-the-sink filters, some basic plumbing skills would be an asset.
Tap attachments:
A tap mount will allow you to dispense purified water straight from the tap. It attaches to your tap and is a durable option. One thing to note is that it can look quite clunky – so if you are looking for a sleek finish, an under-the-sink fixture or a water filter pitcher may be a better choice. On the other hand, if you are not concerned with the appearance of your sink, then these attachments will purify water more effectively than pitchers.
Water filter pitchers, bottles, and dispensers:
Perhaps the most simple and cost-effective option is a water filter pitcher, dispenser or bottle. These containers filter water from contaminants and can be placed in the fridge or countertop. Pitchers and dispensers are the best for pick for those who don't need lots of filtered water at a time. One thing to note is that these containers do not purify water, so it is not suitable for heavy-duty water filtering and is best for city water that doesn’t contain viruses or bacteria in it.
The best tap water filters UK :
Best long-lasting water filter:
This premium tap water filter will provide you with crystal-clear drinking water and comes with filters that will last up to three years at a time. The under-sink filter does a great job at eradicating harmful heavy metals due to the KDF filtration (the Kinetic Degradation Fluxion process). In addition, it filters out a high proportion of chlorine and composites from the water which in turn improves the taste and smell of your drinking water. This system boasts an impressive flow rate of up to 7 litres per minute which is ideal for filling up the kettle or pots. Much like many under the sink water filters, this system can be a little tricky to install. Ensure you check that everything is not damaged when you receive your package before you start to assemble, as there have been some reports of parts being broken in transit. However, if you are looking for a long-term, long-lasting investment, then the WFM water system would be your best pick.
| Pros | Cons |
|---|---|
| • It has a filter life of up to 3 yearstd> | • Tricky to install without practical plumbing expertise |
| • High flow rate 7 litres per minute | • Some parts have been reported to have been damaged in transit |
| • Complete system with all connections and fittings | td> |
| • Great high-level chlorine and composites filtering |
Review: “Our tap water is almost undrinkable due to awful taste and Having tried many different types of filters over many years with only limited success decided to give another one a try. this one is superb with crystal clear sparkling water and no awful taste whatsoever, also three years until change!”
Editor's pick
If you are looking for water that is free from chemicals and contaminants that does not cost a fortune, then this deluxe under-sink tap water filter from FinerFilters is a great pick. It is affordable, reasonably easy to install and will make your filtered water taste as good as it gets. This kit comes with a chrome tap and replacement filters that you will need to change after six months of use. The tap fixture has a 70mm stem and is designed to fit onto your sink; however, it should fit through most modern-day kitchen worktops and sink tops. FinerFilters states that the fixture is straightforward to install. However, they recommend that whoever fits the filter should have a general knowledge of plumbing. This kit is suitable for someone looking for an easy to manage water filter system with inexpensive filter replacements.
| Pros | Cons |
|---|---|
| •Comes with a chrome tap | • Complicated to install, basic plumbing knowledge required |
| • Simple twist installation | • Instructions not included with the kit |
| • DIY installation | • The filter needs to be changed every six months |
| • High quality |
Review: “Very easy to install once I believed that just pushing the pipes in was going to seal. The flow is as I hoped it would be or a little greater. Tastes about the same as ordinary bottled water but cheaper.”
Best value tap water filter:
If you are on the hunt for an affordable water filter that is not a lifelong investment, then the Finerfilters under sink drinking water filtration kit is an ideal pick. Pricing under £20, this water filtration system filters out contaminants, odours and other potentially harmful substances for better tasting and cleaner water. This kit is a short-term investment and will need to be replaced every six months. In addition, the water connection fitting is only suitable for use on a standard copper mains water pipe, and some basic plumbing skills are required to fit this filter. As this system is a budget option, it will not have to be the same quality as other high-end tap water filters on the market, so it is an ideal fit for those wanting to test out a filtration system or if you are planning on moving properties.
| Pros | Cons |
|---|---|
| • High-quality filtered water on tap | • Tricky installation |
| • High-quality tap included | • It needs to be replaced every 6-months |
| • Good carbon filter performance td> | • The filter does not remove limescale. |
Review: “This is one of the jobs I would not have done if it wasn’t for the lockdown. I’m so glad I bought this water tap. It was really easy to install and works a treat and will take two people to fit because if you put it on the sink someone will have to fit it through the hole for you while you tighten it under the sink apart from that, it was a really easy job to do just make sure you turn the water off first and set up the little stopcock and tap first.”
The best budget water tap filter:
If you are looking for an alternative to filtration jugs, then this budget under the sink water filter delivers high-quality clear water straight from your tap for under £20. This kit includes a chrome tap fixture and extra fittings, mounting clips and accessories just in case. This high-quality water filter system features a high-quality carbon filter, which removes chlorine, contaminants, odours, and toxins from your water u2013 giving you great tasting clear drinking water on tap. One thing to look out for is that some of the parts can be easily damaged during transit. So, make sure you check all the features and the filter cartridge components before you start to assemble the system.
| Pros | Cons |
|---|---|
| • Easy fit with minimal tools and basic plumbing skills | • Reviews have mentioned that some parts were damaged in transit |
| • High-quality carbon filter system which removes chlorine and contaminants | • You might need extra help assembling |
| • Has all the essential fittings including a tap td> |
Review: “A great bit of kit, I didn’t use the tap as I had a three-way tap already, but buying the kit worked out as cheap and a lot less hassle than buying individual parts, the filter element definitely works well, as we have heavily chlorinated water and this removes the taste, I will be buying more of these filters from fine filters as future replacements as I have had excellent service so far.”
Best tap water filter with a 5-Stage System
This economical, 5-stage, reverse osmosis-based filtration system by iSpring provides optimum protection against contaminants in your drinking water and will filter out 1000 different types of pollutants such as arsenic, lead, chlorine, asbestos, fluoride, mercury, and sodium. The five-stage system is designed to progressively eliminate impurities and improve water quality, leaving you with clear, clean water. The system comes with a brushed nickel tap fitting and is made with premium quality components for long-term use. Like other under-sink filters, this water filter fixture will require some basic domestic plumbing skills to build yourself. However, the system fits under a standard kitchen sink. All parts are included with the products, and clear, organised instructions and videos tutorial to help you assemble your filtration system. It is good to note that this system may not work as well with all kinds of water, so ensure you have the proper water system beforehand.
| Pros | Cons |
|---|---|
| • Certified by the NSF (National Sanitation Foundation) | • Not for low water pressure systems |
| • High-capacity reverse osmosis water filtration for safer water | • Complicated to install, basic plumbing knowledge is required |
| • Removes over 1000 contaminants and keeps the healthy minerals in the filtered water | |
| • High quality | |
| • Brushed nickel all-metal tap included |
Review: “I am not too bad with DIY tasks, and I found it easy to fit, no problems, no leaks; it has now been working for six months delivering fresh, clean filtered water reliably to my family. I have had water filter systems in the past, but this is my first R.O. system, and I could tell the difference straight away. I am very happy with this filter system, and I would be happy to recommend it.”
Best tap water filter with a 6-Stage System
This premium under-the-counter water filter removes not only harmful pollutants but also ensures that the most helpful minerals remain in your drinking water. The 6th stage of this system (the Alkaline Remineralization filter) restores healthy minerals and produces a balanced alkalinity, providing the water with a better taste. It comes with a trendy European-style kitchen tap fixture and is designed for do-it-yourself installation backed with clear written instructions instructional videos tutorials. One thing to note is if your water pressure is under 45 PSI, you will need a different kit, so bear that in mind when if you are considering purchasing this 6-stage under-counter water filter. In addition, the iSpring 6-Stage water filter comes with a 1-year guarantee to make sure you get the most out of your investment.
| Pros | Cons |
|---|---|
| • Reverse osmosis water sifter and water softener | • Quite challenging to install |
| • Natural taste | • Not suitable for people with less than 45 PSI water pressure |
| • Maintains healthy minerals | • Some fittings may be American parts |
| • Removes up to 99% of more than 1000 contaminants | • May need to invest in additional fittings |
| • High-quality premium fixtures |
Review: “It’s only been operating 24 hours, but we love it already. Tea and coffee taste much better, and no chlorine taste in the drinking water. No more plastic bottles of water, it will pay for itself, including running costs, in under three years. We selected this one as it is one of very few in the UK that offer the remineralisation stage. Even though it’s of USA origin, the supplied inlet water fittings fit UK metric 15mm plumbing parts. In the end, I didn't use them, as in my installation, the isolator valve would have been located behind the kitchen sink bowl at the base of the cold tap.”
The best water filter tap attachment
If you are looking for the convenience of an easy installation, then this tap attachment from WaterDrop is an easy way to get filtered water. The upgraded filtration technology is designed to further reduce chlorine, contaminants, and odours for highly efficient filtration. The water filter system is designed with a 0.5 GPM strong and steady flow rate, so there will be no sad trickles or waiting for the water to flow. The system also offers three months or 320 gallons (1211 litres) of clear filtered water, which is more cost-effective than buying bottled water. Additionally, reviews have mentioned that this fixture is easy to install and gives a consistent water flow.
| Pros | Cons |
|---|---|
| • Tested and certified by NSF International | • Not as good at purifying as some other high-end water filters |
| • 3 months of typical use or 320 gallons of filtered water | • Reviews have mentioned the design looks clunky. |
| • Switch between filtered water and regular tap water | • Does not come with a tap fixture |
| • Easy to install |
Review: “This reduces chlorine to a non-detectable level for my water supply - southeast England. So, I’m very happy. Just ensure that the water flow rate is not too high - water needs to flow through the filter slowly that it has enough contact time to filter out whatever shouldn't be in there!”
The best dispenser, pitcher and bottle water filters:
Best counter-top tap water filter dispenser
If you donu2019t want an under-the-sink water filter, then this counter-top filter sits on your worktop and attaches to most standard kitchen tap fixtures. This APEX filter adds healthy minerals like calcium, magnesium, and potassium into your water and balances pH levels u2013 leaving your filtered water with a better taste. It has a slim, portable, and compact design and can filter up to 750 gallons (2939 litres) of water or and six to eight monthsu2019 supply. So if you are looking for something sleek and efficient, then this counter-top filter would be an excellent pick.
Best water filter pitcher
BRITA is one of the most well-known water filtration companies in the game, and this filtering pitcher jug is the perfect easy solution to clean and better-tasting water. This BPA-free, affordable and basic option reduces chlorine, copper, cadmium, and mercury levels and can go through 150 litres of water before itu2019s the filter needs to be replaced. Leave it in the fridge for ultra clean and clear water.
Review: “This is one nice looking pitcher, comes with one filter. After cleaning it, I filled it for the first time and dumped it multiple times according to the instructions. Others have stated there is a problem with the handle design. I do see where if you fill it up, then the unfiltered water can overflow into the handle and drip all over the place. My solution was either don't fill it up all the way or place the back end on something to tilt the reservoir level.”
The best water filter on the go
If you are looking for a portable tap water filter to take to work, travelling, or camping, this water bottle from LifeStraw would be an excellent match. The straw filter removes any bacteria and parasites, microplastics, or chemicals like chlorine, pesticides, and herbicides. This water bottle conveniently holds 0.65 litres, comes in various colours, and includes a carabiner for easy carrying. The bottle is durable, and BPA-free so you can access clean filtered water at any time.
Review: “Keeps me away from any single-use plastics! This bottle is really durable, and I love the filter, especially if you like to travel or do anything outdoors - just knowing that you can dip it in the lake and feel confident you're drinking clean water. It's a kind of reassurance that I appreciate and a value that goes beyond its filtration. The 1L bottle is plenty of water for a good hike and not too overbearing; it comes with a carabiner which is appreciated. 10/10 would recommend, and I would recommend getting extra filter pieces; you'll probably go through them faster than you think.”
Should you filter tap water?
It depends on your preference and needs. If your tap water tastes like chlorine or has a taste you do not like, then a water filter will solve that issue. On the other hand, if you live in an area that has compromised water supplies, then yes – you should definitely filter your tap water. Filtering your tap water will only give you a positive outcome as it filters out any contaminants or bacteria that may be in the water supply.
What to read next:
Ellen Kinsey is a Commercial Content Writer for WhatsTheBest, and also writes for Yours, Mother&Baby, Heat, Closer and Empire. She has a passion for cooking, media, and women’s health.
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