Best Water Purifiers in 2021 – (Reviews & Buyer’s Guide)

Water is the most important element on the planet. We rely on it for so many things that compromising your water quality can have long effects on your health and happiness. Luckily for us, there are thousands of different systems on the market today that can effectively purify water.

Regardless of your budget, lifestyle, or space constraints, there will be a water purifier for you. Water purifier companies are engineering dozens of different styles of water purifiers that fit your personality and your lifestyle; you just need to know where to look!

In this guide, we will show you all the ins and outs of water purifiers. We will investigate the different types you can choose from, along with some key factors to look out for when searching for the best water purifier for you. Whether you are an adventurer trying to bring the water purifier with you or are simply looking to improve the quality of your drinking water at home, we have the know-how and guidance to find the water purifier for you.

Best water purifier Reviews

What is purified water?

Simply put, purified water is water that is clean and free of any contaminants or toxins that could be in it. Many water sources, including those that come from a municipal city supply, have a unique set of contaminants or toxins in them that can cause harm to your body and your appliances at home.

Purifying water is the process of removing these harmful elements from your water supply. This can be done in several ways using filters, reverse osmosis, water distillation, and many more proven and effective ways.


What is the difference between distilled and purified water? (Are they the same?)

It is important to understand the difference between distilled and purified water. The goal of each process is to create clean and purified water healthily and safely. The difference between water purification and water distillation is the process that the water goes through the achieve the end-goal of the cleanest water possible.

Distilling water uses a combination of a heating element and a simple carbon or charcoal filter. Water is heated in an internal stainless-steel tank, and the steam that is produced from the heat will travel upwards through a carbon activated filter and out the other side. After the steam/water has gone through the carbon filtering phase, it is then deposited into a glass pot that holds the distilled water until it is time to use it for drinking or any other use.

Many people rely on distilled water for medical devices. It is said that drinking distilled water helps blood flow throughout your body and delivers oxygen to the blood more efficiently. Distilling water usually takes much longer than most filtering processes, and you are limited to the capacity of the glass holding tank. Still, the benefits outweigh these things, according to most.

As was stated before, water purification has the same end-goal as water distillation; it just uses a different route to get there. The most common way to purify water is with a filtering device of some sort.

These systems will attach a filter or set of filters to the main water supply line in your home. They will bring the raw water through a rigorous set of filters and sometimes water-softening systems before the water is discharged throughout your home. Regardless of the filtering device, they all use the same technology to produce clean and pure water. They typically have a set of sediment, carbon, and Micron filters that each remove different contaminants from the water supply.

Which is better, purified, or Springwater?

Both purified and Springwater are great options for clean and great-tasting water. It is difficult to say which is better based on the water quality, but there are some benefits to purified water that should not be ignored.

One of the best things about purified water is that you can get it virtually anywhere. There are so many different water purifying styles that no matter where I am, I can have some sort of water purification system. Unless you have a natural Spring in your backyard, finding Spring water is virtually impossible unless you buy it every time. Springwater comes in a bottle that you must lug around all day, and then once it is gone, it is gone for good. With water purifiers, you can bring the filtration with you.

Another thing to consider when comparing Springwater to purified water is what you are doing for the environment. Springwater comes in a single-use plastic bottle that takes years to decompose. With a water purifying system, you are using water from an existing water line or a creek out in the mountains; there are no single-use aspects of most water purification systems. With filtering water pitchers, the lifetime of one single filter can reduce single-use plastic water bottles by over 300 per filter!

Lastly, Springwater is expensive! You would save hundreds of dollars over the span of a few months if you were to find the best water purifier for you rather than purchasing Springwater. Most water purifiers last for years, and the only additional cost is replacing filters and possible maintenance, which is extremely limited.


Is purified water good for you?

Absolutely! Many water supplies from a city or even from a well are riddled with heavy metals, toxins, fluoride, and chlorine. Nobody wants that in their water. Water purifiers are designed to remove these types of contaminants from your water supply and ensure you are drinking nothing but safe, great-tasting water.

Many water purifiers can add valuable minerals and other beneficial elements to your water. Water has tons of beneficial minerals and elements that make our body’s healthier and stronger. Many water purifiers do not remove these things from your water supply, and some even add valuable minerals like magnesium to the water.

pH level is an important metric with water. When water’s pH level is below 7, it is considered acidic, and when acidic water is ingested in large quantities, it can have harmful health effects. There are tons of water purifying systems available that increase your water’s pH level and make it even healthier than your standard water purifier.


How do I make purified water?

Luckily, water purification systems come in all shapes and sizes, and there are dozens of different filtering styles. Depending on your situation, you will need to look at which purifying style is right for you. Some of the most common purifying filters are designed to increase the quality of your drinking water.

There are filtering water pitchers, straws, water bottles, and many others to choose from. These are very affordable yet effective solutions to make purified water that will increase your drinking water’s safety and quality. Another good option is filtering the faucet. These systems re-route water through a device attached to your faucet and purify water before dispersing clean and healthy water.

Some people are looking for a solution that handles all their drinking, cooking and cleaning water needs. Fear not, there are dozens of solutions for this as well! One of the most common water filtering and purifying methods in the under-sink filtering system. This device is installed underneath your kitchen sink and is attached to your cold-water line that leads to your faucet. The under-sink system will redirect water through a series of sediment, charcoal, and other filters to remove as many impurities as possible from the water.

Once water is finished going through the filters, it will flow out your existing faucet (or a dedicated included faucet), and you can use this cleaned and purified water for all your needs! One nice thing about inline, under-sink water filters is that they can be adapted to any existing water line installed. For example, if your ice maker in your refrigerator is producing bad tasting, sour ice, this filter type can be installed on that water line to increase ice quality!

If you want to enhance your water quality across the board, installing a whole-home water purifier is the play. These are becoming more and more common throughout homes, and their benefits are endless. By simply installing a whole-home water purifier to your main water line, you will have all the benefits of purified, clean water in every single room in your house.

Many people struggle with dry, itchy skin from taking a shower in untreated water. With a whole-home water purifier, your shower water will be healthy and leave your hair, skin, and nails in the best shape they can be! This whole-home solution will also work your everyday cleaning, cooking, and drinking water needs, making it a great option for all families.


1.Aquagear Water Filter Pitcher – Fluoride, Lead, Chloramine Filter

Aquagear-Water-FilterHighlighted Features

  • The pitcher is constructed of 100% FDA-approved good grade plastic and is 100% BPA-Free.
  • The filters exceeded NSF standards 42 and 53.
  • Each filter will last for at least 150 gallons of water usage.
  • While the filter removes thousands of contaminants, it leaves healthy minerals like calcium and magnesium in your water.

The most economical way to get clean drinking water is a water filtering pitcher. A few years ago, there are few options, but now thanks to Aquagear, we have another filtering pitcher! I love that these pitchers are so simple and easy. Just pop the filter into place, fill it up and let gravity (and the filter do their thing)

Aquagear prides themselves on their filters ability to remove over 2000% more contaminants than its competition.

Combining these facts, along with the company’s overall mission of a more sustainable planet, makes this Aquagear filtering pitcher a great option. Small enough to hide in the corner of the fridge unnoticed, this water filtering pitcher does not take up space but still holds enough water to keep you hydrated all day.

What We Like:

  • The filter is small enough to easily fit into the refrigerator without taking up a lot of space.
  • The installation of the filters was fast and simple.
  • Water testing showed that after filtration, fluoride and other trace elements were greatly reduced.
  • The filter life is MUCH longer than other water pitches that are like the Aquagear.
  • For every purchase someone makes, Aquagear provides six months of clean water to a family in need.

What We Didn’t Like:

  • After a few weeks, the filter takes a very long time to complete the process.


2.HQUA-OWS-12 Ultraviolet Water Purifier Sterilizer Filter

Highlighted Features

  • The system uses UV light and a stainless-steel chamber to sterilize water.
  • This water sterilizing system can remove 99.99% of bacteria and microbes.
  • There is an included quartz sleeve that helps transmit the UV light.
  • There is no water requirement for the water flow direction.

If you are looking to take your whole house water supply to the next level, this UV light sterilizer will bring you there. Designed to work best with another water filtration system, this sterilizer will remove anything that finds its way through the filtering process. There is virtually no additional maintenance with this sterilizer, which provides homeowners with peace of mind.

Bacteria and microbes are difficult for many water filters to remove, but it is proven that a UV light filter and sterilizer can remove that pesky bacterium. The power chord is over 3 feet long, making it easy to fit into any space. The smart controller will allow the homeowner to have full visibility of their system status and lets you know with a loud beep when there is a fault.

What We Like:

  • This system will sterilize pre-treated water and make it even healthier, which will produce some of the best water possible.
  • There is an LED light that allows you to know the system’s status and ensures all is working correctly.
  • There is very little maintenance with this sterilizer. The quartz sleeve needs to be cleaned a few times per year and replaced every two years.
  • The installation time is super quick; there is nothing tricky about it.
  • All the materials are built solidly, and I do not think there will be a durability issue.

What We Didn’t Like:

  • To get the most out of the sterilizer, there are many requirements that the water must obtain that require a separate filter.


3.Woder WD-S-8K-DC Water Filtration System – WQA Certified

Woder-WD-S-8K-DCHighlighted Features

  • It is designed to be used in conjunction with pretreated water from a municipal supply.
  • There is no plumbing required; the 3/8-inch hose is designed to connect directly to the existing water supply.
  • It is certified by WQA for chlorine removal and lead-free compliance rules.
  • The flow rate is 2 gallons per minute (GPM) when water pressure is set at 65 PSIG.

One of my favorite things about this filter is that the faucet’s flow rate is not affected at all! That trait alone is worth its weight in gold for me. The Wonder under-sink filtering system is a small, sleek system that fits under your sink without taking away any precious storage space. Installation was simple, and filter changes will not provide any headaches down the road either.

Combine the system’s simplicity with the fact that it is a WQA certified system for lead removal, and you have the total package! We trust the WQA, but since we run independent testing, we had to check the lead levels ourselves. Sure enough, there was a noticeable reduction in the lead, other heavy metals, and chlorine.

What We Like:

  • One of the simplest units I have ever seen, it is truly maintenance-free after installation.
  • The Wonder model claims to remove harmful contaminants but leaves healthy minerals, and according to my water testing, this was true.
  • The small size was easy to install under the sink and is not noticeable at all.
  • Water testing revealed a decrease in several different water-based contaminants, including lead!
  • The taste of my municipal water supply improved dramatically within minutes of installation.

What We Didn’t Like:

  • It does not work well with water supplies that are coming from a well.
  • It is not as effective on warm water; water should be cold to see the best effect.


4.Engdenton Faucet Water Purifier Reduce Chlorine

Highlighted Features

  • All stainless-steel housing is constructed of food-grade 304.
  • It can produce 8 cups of water per minute, which is around 0.5 gallons-per-minute.
  • The filter life is 320 gallons, which is around 6 months of normal usage.
  • There is an activated carbon fiber filter that removes sediment and inhibits bacterial growth.

The first thing I noticed about this faucet filter was the quality of the materials. It is constructed entirely of stainless steel and looks great in your kitchen.

When it comes to performance, the 320-gallon filter life is near the top of the spectrum regarding filtering longevity. The activated carbon filter is a nice feature. It is there to inhibit bacteria growth around the filter and remove metals and sediments from your water supply.

Another feature that I liked was the 360-degree rotating faucet head that you can move with ease. It makes it easy to clean any dish you need, or my favorite part, fill a large water bottle that would not fit underneath it otherwise. There is a lot to like about the Engdenton filter; it does a great job of removing the water’s toxins and looks good doing it.

What We Like:

  • The filter life one of the longest on our list, which saves money in the long run.
  • The construction of the filter is strong and sturdy, unlike many others made of plastic.
  • Tastes and odors associated with chlorine are removed from the water.
  • The filter can rotate 360 degrees for help with cleaning, drinking, and anything else.
  • You can choose between filtered water and non-filtered water by using a solid valve built-into the filtering mount.

What We Didn’t Like:

  • There is a lack of information from the company about specific contaminants that this filter removes. I wish they provided more.


5.Brita Ultra Max Filtering Dispenser

Highlighted Features

  • The maximum capacity is 18 cups of the filtered filter.
  • This filter is designed to stay in your refrigerator and includes a spigot to dispense water directly into your glass.
  • You can choose from two color options: clear body with a black cap or clear body with a grey cap
  • The filter will last for 40 gallons of water, usually around two months.

Brita is a worldwide leader in water purifiers, and this in-refrigerator model is exactly why. The first thing you notice is the water capacity it can hold. This is the perfect solution for large families that go through a lot of drinking water every day. The spigot at the bottom is solid and does not leak, which is a huge concern with spigots on water tanks.

The filtering quality is what you would expect from a Brita device. It excels at removing those pesky tap water contaminants like chlorine and lead. If your city water supply is high in chlorine and fluoride, this may be the water purifier for you. Refilling this filter is a breeze, thanks to the flip-top lid that is simple to open and close.

What We Like:

  • We love that you can choose the color of your filter.
  • This thing holds a ton of water; you do not need to worry about constantly refilling it.
  • Each filter replaces 300 single-use plastic water bottles, which is great for the environment.
  • The activated carbon stage of the filter does a great job removing odors from water.
  • The lid on the top is easy to flip open when it comes time to refill the filter.

What We Didn’t Like:

  • After a few refills, the time it takes for the water to get through the filter is very long.


6.BWT Premium Water Filter Pitcher & 3 Filters

Highlighted Features

  • The filters (3) are designed to remove tap water contaminants and re-mineralize your drinking water.
  • There is a magnesium boosting filter that increases magnesium to a healthy level.
  • It comes in 6 different color options.
  • The filter will last four weeks on average, but it can last up to 8 weeks with normal use.

Coming in 6 unique colors, the BWT Premium pitcher looks great while it is turning your water into crisp, clean water. This pitcher is different than most.

Usually, you will find a single filter in most pitchers, but the BWT has three separate filters to ensure no bacteria or lead is sneaking through and into your drinking water. There is an additional magnesium filter that adds valuable elements to your water, making it even healthier.

The pitcher is made from a strong and durable plastic that you would have to try and break. The handle is perfectly shaped, and it is by far the most comfortable water purifier pitcher handle we have tested to this date.

The design is also nice because it is skinny enough to fit in your refrigerator with no problems. The filters will last up 1-month with heavy use, but we have been able to get nearly eight weeks out of them!

What We Like:

  • The handle is nice; it is ergonomically the best handle we have seen thus far.
  • There is hardly any wait time involved for the water to go through the filter.
  • The three filters do a great job of removing lead and chlorine.
  • It does not take up a lot of space in your refrigerator. It has a sleek design.
  • The plastic is sturdy, and I am not worried about it breaking or having any durability issues.

What We Didn’t Like:

  • This is not the largest water capacity filter; I must refill it a few times per day.


7.GRAYL Ultralight Water Purifier [+ Filter] Bottle

Highlighted Features

  • Push-button technology activates the filter from the bottom, requiring no straws.
  • Removes 99.99% of bacteria, viruses, and protozoan cysts.
  • It takes 15 seconds to filter a full 16-ounce bottle.
  • 1% of all purchases go to environmental non-profit charities.

GRAYL has changed the game with its simple push-button filtering design. In a mere 15 seconds, you can filter 16 ounces of water for drinking or cooking quickly. Using virtually any water source on the planet, this GRAYL model is considered by many to be the best self-filtering water bottle on the market.

There are so many different places that this portable water filter bottle can come in handy. Whether it is the mountain creeks, fly-fishing streams, or rainforest pools, the GRAYL water filtering bottle can remove up to 99.99% of viruses, bacteria, and protozoan cysts. It will also remove sediment and heavy metals from the water supply, a sporadic feature for a self-filtering water bottle.

If you are a traveler and spend time on airplanes, this is a great option for you. Every year, travelers throw away millions of plastic water bottles. With the GRAYL self-filtering water bottle, you get the equivalent of 300 single user water bottles. The 3-stage filter lasts for about 40 gallons and is easily replaceable.

What We Like:

  • The long-lasting cartridge will last for 40 gallons before needing to be changed.
  • Straws can be difficult with these purifying bottles, and this purifying bottle works like a normal cup.
  • Zero flow rate lost due to all the filtering taking place before water being available.
  • Filters are light and small, making replaceable ones easy to pack on your next trip.
  • The push-button technology is truly ahead of its time. It is so simple to use.

What We Didn’t Like:

  • Pushing down on the button proved to be difficult and took a lot of strength.


8.New Wave Enviro 10 Stage Plus Water Filter System

New-Wave-EnviroHighlighted Features

  • It features ten unique filtering stages, which is the most of any countertop system we have investigated.
  • There is an included faucet diverter attached to any standard faucet.
  • It has a dedicated chrome faucet with a rubberized endcap.
  • NSF/ANSI has certified this system for bacteriostatic removing properties.

We love simple water filtration systems, and the New Wave system checks that box. It was a breeze to install, and the water faucet diverter that is included seems solid, and I do not see any leaks coming from it. It is hard to ignore the fact that the water will run through 10 unique stages of filtration. That is a high number for a countertop system, and that cannot be ignored.

Any water system with certifications from both NSF/ANSI and the Gold Seal Association can be trusted to provide you with a safe and reliable recommendation. Filter changes are easy with the New Wave system, and the long-lasting filter life of 1,500 gallons saves you money in new filters in the long run.

What We Like:

  • This is a straightforward system to install with your current faucet.
  • Ten stages of filtering are massive for a countertop unit; this system removes thousands of contaminants.
  • Chlorine taste and odor were removed right after installation.
  • At less than $100, this system is priced right for what you get.
  • The filter life is 1,500 gallons, which is great for a true countertop unit.

What We Didn’t Like:

  • I was hoping that total dissolved solids would be reduced more, given all the filtering stages.


9.CO-Z 110V Brushed Stainless Steel Water Distiller

Highlighted Features

  • This system is a water distiller that uses a 750W heating element to remove bacteria and other contaminants.
  • It combines a heating treatment with an activated carbon filter.
  • The water distilling system can distill up to 6 gallons per day.
  • There is an automatic shut-off valve that will shut the machine down when it reaches 320 degrees Fahrenheit.
  • The holding tank is made from shatter-resistant glass and can hold 4 liters of distilled water.

The health benefits of drinking distilled water are well documented. Research shows that you are helping your blood transport oxygen and nutrients throughout the body by drinking distilled water. If you are looking to reap these distilled water benefits and save money on water in the long run, then you will want to investigate this system.

Water distillers are notoriously slow; some can take up to 8 hours to produce 1 gallon of purified water. The CO-Z distiller is one of the faster ones on the market, but you are not sacrificing any water quality because of that fact. By combining the heating elements of the distilling process with an activated carbon stage’s filtering capability, you are getting the best of both worlds with this system.

What We Like:

  • The holding tank is made from tough glass that will not break.
  • This distiller is faster than many comparable water distilling systems.
  • The activated carbon filter level is a nice addition that will help remove odors and bad water tastes.
  • We liked the built-in safety features. The machine will shut-off when it reaches a temperature that could be considered dangerous.
  • After running water through the distilling machine, we immediately noticed how much better tasting the water was.

What We Didn’t Like:

  • The installation and set-up manual were very unclear and lacked detail.


10.LifeStraw Family 1.0 Portable Gravity Powered Water Purifier

Highlighted Features

  • This gravity filtering straw surpasses EPA standards for viruses, bacteria, and protozoa removal.
  • The flow rate of the straw is 9-12 liters per hour.
  • LifeStraw is designed to be used with any water supply, even from rivers and creeks!
  • There is a sealed bag that holds the water while gravity allows it to flow to the straw.

LifeStraw is one of the most popular water purifying solutions for adventurers and those who love to spend time outdoors. They are designed to be used in survival situations or have no other source for clean water than that dirty river flowing through the mountains. The company has an amazing “Green Environment” initiative that encourages people to reduce single-use plastic water bottles and utilize a filter like this.

When you are camping, hiking, or exploring, space in your pack is at a premium. With the LifeStraw portable gravity system, you do not have to worry. It is fully collapsible and weighs less than a pound. The gravity bag is nice and sturdy, too.

All you need to do is fill the bag from any water source available and hang it up in a high space to allow gravity to do its job. As water flows down through the filtering straw, it is purified and cleaned before it makes its way to you.

What We Like:

  • The size of this gravity straw is perfect. You can pack it just about anywhere.
  • There is a filter in the straw that lasts for up to 3 years of average usage.
  • The water holding bag is made from a secure, durable material that is leak-proof.
  • LifeStraw donates drinking water to one child in need with every single purchase of their products.
  • The system’s weight is less than a pound, making it easy to carry on backpacking trips or an adventure.

What We Didn’t Like:

  • It can take a while for the water to flow through the straw from the gravity bag.



How to Purify Well Water for Drinking

Well, water systems are one of the biggest headaches for water purifying professionals. They often have high levels of heavy metals, total dissolved solids, and viruses that make it very difficult to purify water and get the best water possible. When it comes to combatting iron and other well water contaminants, we now have a few different options to choose from.

Many companies are now focusing on handling well water with their products, and we are starting to see several good options. The best purification method for drinking well water is to find a filter that handles metals like rust and iron better than most.

This can be done with an under-sink filter or a faucet filter as well. Some self-filtering water bottles will be helpful as well, but you want to have as much available to you as possible when it comes to drinking water. I suggest investigating an under-sink filter specializing in heavy metals, the 3rd product on our review list is a great choice for removing many contaminants from your water supply.

If you are looking to have an on-the-go option, The GRAYL filtering water bottle or the LifeStraw Portable Gravity filter are great options. Both are adventurer or survivalist filters designed to turn even the grossest water supplies into healthy drinking water. If they can turn swamp water into healthy drinking water, they can turn your home water into quality purified water as well.


How to Choose Water Purifier for Your Home

What Water Purifying Style Do I Need?

As we begin searching for the best water purifier for you, we must first determine exactly what you are trying to get out of your water purifier. There are several different options to choose from, and once we have narrowed down the style, the more technical details come into play.


If you are looking to improve your drinking water at home for the entire family, you can do that with a quality self-filtering water pitcher. These are extremely affordable yet effective filters that are very common across houses all over the world. If you want to bring purified drinking water on the go, a self-filtering water bottle is a great choice as well.

These have the filters built-into the water bottle and will filter any water you put into the bottle. Keep in mind; if you are looking for more applications for your purified water than drinking water, a pitcher may not be the best option.

A whole-home system and many under-sink systems will provide you with quality drinking water, too. But if you are not planning on using any of the other benefits you get from these systems, then it is a large financial commitment for just one benefit you get from the system. One thing to remember with whole-home and under-sink systems is that they are more expensive, but you will not be limited to the amount of clean water you have access to. Water bottles and pitchers can only hold so much water.

Kitchen Uses (Cooking, Cleaning, and Drinking)

One of the most popular filter styles is the under-sink filter. It attaches easily to your existing cold-water line under your kitchen sink (or any sink) and results in an endless supply of purified water. You can use this water for anything you would like, and unlike static pitchers and water bottles, you will not have to worry about refilling the filter or be limited to a certain amount of water. Under-sink units will require more in-depth installations, but nearly all are designed to be installed by the homeowner.

A whole-home water purifier will provide you with clean kitchen sink water, too. It sends clean water to every single faucet in your home so that you can utilize the purified water anywhere. If you are not worried about your showers’ quality and sink water within your bathrooms, then a whole-home system is a large investment for those just wanting fresher water for cooking, cleaning, and drinking.

Purified Water For Everything

If you are looking for the best water experience throughout your entire home, then a whole-home water filter is the best choice for you. You will have a wide array of options that range from several hundred dollars all the way up into the thousands.

You will reap the benefits of healthy drinking, cooking, and cleaning water, along with the best showers you can ask for. The benefits of a whole-home system should not be ignored; you will have healthier hair, skin, and nails from your bathing water, which is invaluable over time.

My Water Quality

Once you have determined the best style of water purifier for you, you will now turn your attention to a device that fits you and your lifestyle the best. The first thing you must do is perform a water quality test. They are available worldwide and are cheap, affordable ways to know exactly what is in your water supply.

By performing a water quality test, you will know the exact toxins and amounts of those toxins that you are dealing with. Now, you can find the best filtration type and system that will remove your specific water contaminants.

Some filters are better than others at removing specific contaminants like lead and chlorine, while others can remove total dissolved solids and rusts better than others. The water test will point you in the right direction.

Filter Capacity & Water Usage

When it comes to saving money and keeping your system as maintenance-free as possible, you will want to investigate the filters’ life capacity. Some are designed to last for years, while others can last mere months.

The more you must change the filter, the more the dollar signs will add to replacement filter costs. Based on the number of people in your home and the amount of water you use, make sure to find a suitable filter that can handle a long enough time period where you are not constantly changing filters.

Another thing to look out for is water production capacity. Some filters have a maximum amount of water that they can purify in a day. For example, if you are looking into a water distiller, make sure you know the amount of water it can produce each day. Many are capped at just a few gallons, which is plenty for some people and not enough for many others.

Meets NSF/ANSI Standards?

Be on the lookout for products that are certified by NSF/ANSI. These are proven to be quality products that are independently tested. The NSF is a 3rd-party testing company that will thoroughly test products like water filters and purifiers to ensure that they receive a quality product.

The NSF has different standards for different qualities within a filter or softening system. For example, if a product is labeled as NSF certified for standard 42, this means that the NSF has tested and proven that the product can remove chlorine effectively. The more certifications and standards a system has, the more peace of mind you should have about buying it.

Flow Rate & Water Pressure

Many people worry that a water purifying system will slow their flow rates and water down. Years ago, this was the case, but as technology has evolved, so has the purifying world. There are a few things to ensure when selecting the best water purifier. Flow rates will still fluctuate, and if you are choosing a whole-home purifier, make sure you get one that can handle the number of faucets and bathrooms in the home.

When it comes to under-sink systems, they will also have different flow rates. Many will be above 0.5 gallons-per-minute, and this is a nice and steady rate. If you see something lower than that, you may want to consider going in another direction.

Installation & Maintenance

Many people are turned off by the idea of installing any sort of plumbing device, and if this is a worry for you, do not worry; we have a solution for you. Water bottles, water pitchers, and straws require virtually no installation or maintenance. Just pop the filter in, and you are good to go! But it is when we get to the other systems where installation typically becomes a worry.

Under-sink units do require a little bit of plumbing. You do not need any prior experience, though! Nearly all these systems are now designed with the homeowner in mind, and they are doing everything they can to remove any additional installation costs. Lookout for any systems that have online instructional videos and 24/7 support. These are great tools when installing an under-sink water purifier.

Whole-home systems require the most installation, but they are still straightforward for a lot of people. This will require some more heavy lifting because they usually involve tanks and other larger equipment, but it can be done with ease with another set of hands. One thing to be aware of is warranty rules when it comes to installation. Some companies are sneaky and will advertise that the system is self-install, but they will not tell you that if a licensed plumber does not install the system, it voids the warranty.


You should always investigate the warranty policy of any system you buy. When it comes to water purification, they are typically perfect. With pitchers, bottles, and other mobile filters, they will usually have a minimum of a 1-year warranty. This is standard and covers nearly everything.

When it comes to whole-home systems and under-sink systems, you want to take a look at the fine print. Some will advertise a 5-year or even lifetime warranty but ensure that this covers the entire machine and not just the valves. This is a widespread practice with these systems. Ensure the device you choose has a warranty that covers all aspects of the system.


Frequently Asked Questions and Answered


Does purified water have fluoride?

Contrary to popular belief, some fluoride is actually good for you! It is when you consume too much that it becomes problematic. Purified water will not have high levels of fluoride but will leave traces of it in most cases. This is good for your teeth to consume small amounts.

Does purified water have minerals?

By definition, purified water does not necessarily mean it has minerals or not. When we refer to purified water, we state that the specific water supply is free from harmful contaminants. But luckily for us, almost all water purifying solutions will leave the good minerals, and some systems will even add them back into the water supply in larger amounts.

Can I use purified water in my CPAP machine?

You certainly can do that if you wish. But is most common to use distilled water for CPAP and other sleep apnea machines. Distilled water has qualities that will oxygenize blood and therefore oxygenize the body. Using this with a CPAP machine, you will see these benefits along with your machine’s mask and straps staying cleaner for longer.

Does copper purify water?

Yes, it does! Copper has natural water purification qualities that will kill microorganisms, mold, fungi, bacteria, and other water-based harmful elements. Copper is becoming a trendy choice for people who want a more natural approach to their water filtration needs.

Does boiling your water purify it?

To some extent, boiling water will remove bacteria and other harmful contaminants from your water supply. It is proven that when you have no other option, boiling water is the best solution to purify natural water supplies like lakes and rivers.

Is reverse osmosis (RO) water purifier good for your health?

RO systems are extremely popular because of their multi-stage filtering ability that can trap and remove thousands of different contaminants. It is extremely healthy for you, and many believe that RO water is the best you can find.



We know a TON of different water purification styles and products on the market, and choosing one seems like a daunting task. Do not let this get in your way of improving your water quality throughout your home and seeing the benefits that great-tasting, healthy water can provide to you and your family. The peace of mind knowing that every time you turn on a faucet or grab a glass of water that your water is the best possible quality is invaluable.

By following this guide and reviewing our favorite water purifying products, we are confident that the best water purifier for you is hiding in these pages. We sincerely thank you for reading this article, and we wish you nothing but health and happiness in the future.

Bob Allen
About Bob Allen

Bob has been a plumber for 15 years and loves it! He has always been interested in Plumbing from an early age and has the cuts and bruises to prove it as he set out to work with fix leaks, replace faucets, and make home improvements.