Buyer's Guides

Best Filtered Water Bottles to Buy in 2021

Access to clean drinking water is one of the most essential needs that any person should have. If there’s one thing that we should be very picky about, it should be how we take our water. Oftentimes, we choose bottled water instead of tap water because we believe it’s way safer. But recent studies would say that not all brands are 100% safe. And so, we turn to the next secure solution, look for the best-filtered water bottles. 
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As the old saying goes, “prevention is better than cure.” If there’s anything we’ve learned in the past year, it’s that we have to be very careful and cautious with our health. That means being extra vigilant in whatever we intake, especially with water. Even if it’s from bottled water, there are still brands that contain free radicals that are above the regulated health limits.

Aside from saving yourself, you are also saving the environment. By opting for the best-filtered water bottles made available, you are one less person contributing to the world’s pollution level. That should be rewarding enough.

The market is already filled with many designs and unique systems for filtered water bottles. We picked seven (7) of the best filtered water bottles we’ve seen!

If you don’t have the time to read the full review, you can just click on the links below to skip to that filtered water bottle:

#1. pH ACTIVE Insulated Water Bottle

pH ACTIVE Insulated Water Bottle - Filtered Alkaline Water Bottl
  • NO MORE PLASTIC - with the brand new pH ACTIVE Insulated Stainless Steel...
  • HUGE FILTER CAPACITY - Each pH ON-THE-GO 1oz (30g) Filter Bag lasts an...

Weight: 657.7g | Dimensions: 7.49 x 7.49 x 28.49 cm

The pH ACTIVE Insulated Water Bottle aims to deliver high pH alkaline water anywhere and anytime. It has a multi-stage “pH on-the-go” Alkaline water filter which increases the water’s pH, adding healthy minerals like zinc, magnesium, selenium, and iron. The filter also eliminates the presence of heavy metals in the water like mercury, copper, and lead, and reduces the amount of chlorine, fluoride, and chloramine. This greatly improves the smell and taste of the water.

It’s definitely one of the best filtered water bottles as each filter will last you up to 98 liters or around 26 gallons of water before you need to replace it. On average, it will take about 30 days provided that you drink around 2 liters of water a day.

The water bottle itself sports a sleek and stylish metal design that comes with two lids. The main lid flaunts a bamboo design with a steel handle while the bonus lid is a one-hand operated sports lid with an optional straw and wide, fixed handle. This is a perfect use for going to the gym or other active events.

It has a double-walled vacuum insulation technology to keep your hot drink up for about 24 hours and your cold drinks for 48 hours.

  • Replaceable filter
  • Double-walled insulation
  • Comes with two lids to accommodate different uses
  • Special filter replacement might be hard to look for

#2. GRAYL Ultralight Water Purifier Bottle

GRAYL Ultralight Water Purifier Bottle
  • Provides global protection from waterborne pathogens (virus, bacteria,...
  • Compact - fits in most backpack pockets and cup holders.
  • OnePress Global Protection empowers travelers and adventurers to make the...
  • Removes waterborne pathogens (viruses, bacteria, protozoan cysts),...

Weight: 450 g | Dimensions: 26.5 cm (H) x 8.6 cm (D)

The GRAYL Ultralight Water Purifier Bottle is most definitely one of the best filtered water bottles in the market right now. It aims to provide purified water anywhere you are. This is the best gear to have when going camping, trekking, or biking. It ensures that you’ll be drinking safe water even if you got it from a lake or from an unknown fountain.

It takes pride in its motto which is as simple as “fill, press, drink.” Its filter design was independently tested by a certified laboratory to meet or exceed the NSF/ANSI protocol 42 and 34 for pathogen and chemical removal. It also met with the US Environmental Protection Agency’s Guide Standard and Protocol for testing microbiological water purifiers. This means that its award-winning filter system is fully certified by good authority, marking it safe to use.

The filter system has three active technologies working hand-in-hand inside which are generally the ion exchange, the ultra-powdered activated carbon, and of course, the two-layered non-woven ceramic fiber as the durable base. The purifier system removes waterborne pathogens, including Salmonella and E.Coli, and it filters out particulates, like microplastic and heavy metals.

As to how it works, you take the outer cartridge and fill it up with water then you take the inner cartridge where the filter is attached and you firmly but gently press the latter down until the filtered water slowly fills the most inner part of the 24 oz (710 ml) water bottle.

  • The filter has a long lifespan
  • Easy to use and carry
  • Independently tested by labs
  • The cartridge pressing may be difficult for some

#3. LifeStraw Go Water Filter Bottle with 2-Stage Integrated Filter Straw

LifeStraw Go Water Filter Bottle
  • Reusable LifeStraw Go BPA-free water bottle filters water while drinking;...
  • Award-winning LifeStraw hollow fiber membrane water filter removes bacteria...
  • 2-stage activated carbon filter reduces odor, chlorine and leaves zero...
  • Removes 99.9999% of waterborne bacteria, and 99.9% of waterborne protozoan...

Weight: 220 g | Dimensions: 7.97 x 7.97 x 23.49 cm

The LifeStraw Go Water Filter Bottle takes pride in its award-winning LifeStraw hollow fiber membrane water filter. It comes with a reusable BPA-free water bottle that’s great for traveling, especially when going backpacking or camping. This is because it can remove bacteria and protozoa from lakes and streams which will make the water lean and safe to drink.

Its filtering system has a 2-stage activated carbon filter which reduces the odor, chlorine and eliminates any aftertaste in the water. The microfiltration membrane can filter up to 4,000 L while the activated carbon filters can last you up to 100 L before they need replacing.

This makes the list of one of the best filtered water bottles because, for one, it comes in different sizes—available in 22oz and 1L, and it has been independently tested against international safe water testing standards.

  • The bottle comes with an integrated drinking straw
  • Comes with a carabiner for easy carrying
  • Filter lasts for a long time before needs replacement
  • Decreased in water flow due to due to the filtration system

#4. Platypus Meta Water Bottle Plus Microfilter

Platypus Meta Water Bottle Plus Microfilter, 1-Liter, Aquamarine Sports & Outdoors
  • Water bottle and integrated microfilter for hassle-free hydration
  • Enjoy up to 2 liters per minute of filtered water; filter lifetime is up to...
  • Microfilter is easy to clean with tool-free, shake-to-clean technique;...
  • Great drinking experience: Taste-free material ensures unwanted tastes...

Weight: 294.83 g | Dimensions: 12.7 x 30.48 x 10.16 inches

The Platypus Meta Water Bottle Plus Microfilter makes it to the list of the best filtered water bottles because of how portable and easy to use it is. It is highly recommendable for people going on light outdoor travels, like trekking, hiking, or mountaineering.

The lower half of the bottle is flexible. So you can compactly pack it inside your bag without having to worry about added weight and space. The filter is easy to attach as well. There’s no complicated installation needed. This filtered bottle makes use of the shake-to-clean technique and it filters as fast as 2L per minute.

  • Compact and very portable
  • The top half of the bottle is impact resistant
  • Filters up to 1,000 liters of water.
  • Microfilter is not dishwasher safe.

#5. Astrea ONE Filtering Water Bottle

Astrea ONE Filtering Water Bottle, Black with Tropic Lime Accent
  • GREAT-TASTING DRINKING WATER: astrea ONE Premium Filtered Water Bottle...
  • REDUCES LEAD, COPPER, MERCURY, AND MORE: The water bottle filter reduces...
  • GO GREEN & SAVE: Up to 80% cheaper than bottled water; every astrea ONE...
  • DESIGNED TO BE DIFFERENT: Refilling made easy with the flip-up lid, water...

Weight: 580.59g  | Dimensions: 24.76 x 10.16 x 10.16 cm

The Astrea ONE Filtering Water Bottle looks very fancy. At first glance, you’d think that it is just an ordinary double-walled vacuum container. Well, it is double-walled, but it offers quite more, like clean and safe water. It takes pride in being “the only water bottle certified to reduce over 20 contaminants”. It eliminates common tap water contaminants such as lead, chlorine, pesticides, hormones, and pharmaceuticals.

The outside material used for this premium water bottle is an 18/8 kitchen-grade stainless steel, and the plastic is BPA-free. The filtration system is built-in and each filter will last you up to 3 months. Nevertheless, looking for filter replacement won’t be such a hassle as the brand offers them on their website.

  • Filtration system is NSF42 and NSF53 Certified
  • Premium design
  • Portable
  • The filter is only good for 3 months

#6. SawyerSelect S3 Water Purifier

Best Filtered Water Bottle with Advanced Filtration Process

Sawyer Select S3 Water Purifier
  • Advanced water purification made easy -- Select S3 purifies water of...
  • Innovative foam Membrane and 0. 1 micron filter reduce contaminant levels...
  • Squeeze to drink directly from bottle, or dispense water into other...
  • Ideal for hiking, camping, scouting, domestic and International travel,...

Weight: 285.76 g | Dimensions: 7.62 x 35.56 x 21.59 cm

The Select S3 Water Purifier is quite innovative. It offers two variants, the S1, and the S3. The latter variant is more expensive but it can remove two more contaminant types than the former—heavy metals and viruses. But the S3 only has 400 uses while the S1 has 1,600.

Both can remove bacteria, protozoa, chemicals, and pesticides and improve the taste and odor of the water. When looking for an everyday use filtered water bottle, you may want to opt for the S1 Purifier. The S3 Purifier is best for packing or preparedness for any area around the world, even including those near mining operations.

This innovation has an impressive advanced filtration system. The foam absorption technology used is combined with a 0.1 micron absolute Micro Squeeze filter which effectively strains even the minute particulates, pathogens, and microplastics.

  • Innovative filtering process
  • Portable and easy use
  • Can be used for international travels
  • Rigorous cleaning process

#7. Brita Premium Filtering Water Bottle

Brita Premium Filtering Water Bottle, 26 Ounce, Sea Glass .au Kitchen
  • Brita’s Premium Filtering stainless steel bottle holds 32oz of water, and...
  • Get great tasting water without the waste; by switching to Brita, you can...
  • This 32 oz Brita water bottle is made from durable, double-wall insulated...
  • The filter reduces chlorine (taste and odor) and more with every sip;...

Weight: 521.63 g | Dimensions: 9.67 x 9.67 x 27.15 cm

If you are on the lookout for the best filtered water bottles that’ll keep your water cold for a long period, you might want to consider the Brita Premium Filtering Water Bottle. During summer, you’ll always need to keep a bottle of water near and you’d prefer it to be cold to beat the heat. However, as already learned, tap water is not 100% safe and consuming water from plastic water bottles is wasteful and costly.

The Brita Premium water bottle provides a healthier solution for that dilemma. With its double-walled vacuum insulation, it can keep your cold drink up for about 24 hours. It’s bigger compared to other bottles of its kind as it can carry about 32oz of water inside. The filter is placed inside the straw. It contains a proprietary blend of activated carbon and a binder. It reduces the chlorine taste, odor, and particulates found, especially in tap water.

The filter can last you up to 2 months and you can order the Brita filters separately.

  • Simple yet effective filtration for tap water
  • Double-walled vacuum insulation
  • Bigger compared to regular-sized double-walled vacuum water bottles
  • Simple filtration not recommended for dirtier water

Filtered Water Bottles Buying Guide

It’s not easy to pick out the best filtered water bottle for you. There are, indeed, a lot of products to choose from. You’ll never know if what you choose will be enough or not. Nevertheless, here’s a comprehensive buyer’s guide to help you out in choosing the right one to serve your needs best:

Water filtration system/process

The main reason for getting a filtered water bottle is for the filtration system that’ll keep your water healthy despite where it came from. The best filtered water bottles should have a rigorous filtration system in place. The more it can filter out the better.

Brands will have their own twist and mechanism for their filtration process. Some will even have a patented one. What is important is that it has been officially tested and certified by the necessary departments and offices to ensure that the filtration system/process is effective and safe to use.

Although, the more rigorous the filtration process is, the product will highly likely be more expensive. But nothing is more expensive than buying tens to thousands of plastic water bottles in a month or so, and the price you pay for contributing to the Earth’s pollution level.

When looking into the water bottles’ filtration device, see to it that it’ll be able to deal with and eliminate as many contaminations there are present in water.

Filter lifespan

Another factor to look into in a filter is its lifespan. Some are only effective after filtering a certain good amount of liters. Brands will give you an average estimation based on the ideal water consumption per day, which can be displayed in the number of months. The longer the filter lifespan, the longer you’ll have to replace it.

However, there are instances wherein the filter had already accumulated quite a heavy load of dirt and particulates in only a span of days or weeks—less than what the brand had estimated. So you have to be prepared when that happens and check for the availability of the filter replacement and the budget you want to set.


The main purpose of purchasing the best filtered water bottles in the market is to securely drink clean water constantly. Therefore—obviously—the bottle is for everyday use. But that is not always the case as many who purchase filtered water bottles are those who travel constantly either internationally, domestically, or recreationally like on camping trips and the like.

Your purpose for purchasing a filtered water bottle will decide what kind of filtration system you’ll opt for. You may only be using this special kind of water bottle to filter tap water for everyday use. For travels, you’d want to securely drink water even from places you’re not sure of. In the case of camping, it is to ensure you’ll be drinking safely from lakes or other forms of water in the wilderness.

Of course, there are water bottles with rigorous filtering processes for travels and camping to ensure that you are safe from the particulates, heavy metals, and the likes found in uncultivated water. The filter process for tap water is simpler than the former and so they are most likely cheaper.

Therefore, you will need to identify the purpose of your purchase to be able to narrow down the kind of filtering process and even the filter lifespan you will need in a filtered water bottle.

Material Quality

For any kind of reusable water bottle, especially with plastic, you need to ensure that the material used is BPA-free. This means that the industrial chemical, Bisphenol A, is not used to make the product. This chemical was widely found in Polycarbonate plastics which are often used for containers. Researchers found that BPA would seep into food or beverages from containers made with this chemical.

Brands will most often mix BPA-free plastic with stainless steel or other similar material. Make sure the added material used is high-quality to assure that you’ll be able to use the water bottle for a long time.

Size and Portability

Many will be looking for the best filtered water bottles that can be easily carried and/or stored in the bag; most especially when the purpose for the purchase is for traveling. Some products are flexible when it comes to being stored while others will come in a smaller size for a lighter carry load.

When choosing depending on the size and portability, you may also need to consider the availability of water. When going on a hiking trip, the water supply might be scarce; so you will need to scoop up as much water as you can when you find a source.

Cleaning maintenance 

Like any filtering device, cleaning and maintaining the filtration system of a water bottle won’t be easy. Those that are built for a longer lifespan will offer a cleaning maintenance feature but, most often, they can be rigorous. Nonetheless, it beats paying for filter replacements. However, incorrect cleaning may lead your filtration to be ineffective or even ruined.

With that, you may have to weigh in as to whether or not you’ll be able to effectively clean your filtered water bottle from time to time or will you be best off with filter replacements?

Final Thoughts

We hoped that the article gave you a clearer perspective on purchasing the best filtered water bottles. Opting for a more environmentally-friendly lifestyle will not only immensely benefit you but the Earth itself too.

It is also the safer way to go in drinking water. If there’s anything we’ve learned from 2020 is that we have to be very careful with what we intake. We have to ensure the safety of our health, ergo our body, as we will soon pay the price if we won’t. It might not be immediate but it’ll definitely be painful to experience.

It might seem like a hassle now but the advantages clearly outweigh the negative impression we may have with filtered water bottles. Make sure to choose the best filtered water bottles for you to feel that you got your money’s worth and to ensure your safety when drinking water.

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Last update on 2021-09-21 / Affiliate links / Images from Amazon Product Advertising API


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