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The best reusable water bottles for 2021

Buying a reusable water bottle is a quick and easy change that you can make to help protect the environment. Here's our pick of the best.

By Anna Cook | Last updated Sep 8, 2021

Reusable water bottles holding

Whether you're in the market for a sturdy yet lightweight bottle to accompany your child to school or you need something to keep you hydrated at your desk, a reusable water bottle is an eco-friendly must-have.

Here are the 10 best reusable water bottles to buy - as recommended by Mumsnetters.


1. Best overall water bottle: Ion8 Leak Proof Slim Water Bottle

ion8 water bottle

Price: From £9.99 | Buy now from Amazon

“Ion8 has been really good for us.” RMRM

“I swear by the Ion8 ones because they are leakproof and don't have a plastic straw so it can all go in the dishwasher if needed.” Thetrolleywitch

The popular Ion8 bottle is a great all-rounder. Durable and easy to use, it has a spout cover that flips open with one finger then locks to stop spills.

If you struggle to fit your water bottle in a cup holder, the Ion8  is a good choice as it’s the same width as a can. It also has a soft-touch textured grip and a handy carrying ring. 

There are 15 colours to choose from or, for £2 more, you’ll find more child-friendly designs like unicorns and dragons. The design of the bottles isn’t just about style though - the bottle also features a hydration indicator to show how much you’ve drunk.

The Ion8 is one of the few plastic bottles that are suitable for both cold and hot drinks and it’s dishwasher-safe, making it really easy to keep clean.


  • Lockable lid
  • For cold and hot drinks
  • Dishwasher-safe
  • As narrow as a can


  • A bit pricey

Key specs

  • Material: BPA-free plastic
  • Capacity: 500ml
  • Dishwasher-safe: Yes
  • Lid type: Flip spout

2. Best budget water bottle: Sistema Drink Bottle

Sistema water bottle

Price: £9.70 for three | Buy now on Amazon

“We use Sistema bottles and have never had a leak.” JennyOnAPlate

“Sistema also. Kids have got the 460ml ones (they are laid sideways in lunch boxes and never ever leak) and they do a bigger one which is also good.” alabasterangel

“Sistema are excellent. They do start to wear out and become a bit leaky eventually but we get probably a year of near everyday use out of them before that happens including being used as footballs and for bottle flipping.” Ineedamoreadultieradult

Colourful, affordable and leakproof,  Sistema bottles are a book bag staple. The twist cap is easy for small children to use and helps to keep any leaks at bay. You can get three for £9.70, which works out at just £3.20 each.

The Sistema Drink Bottle is a bargain when you consider it’s sculpted, making it easier to grip. It’s also dishwasher-safe and BPA-free.  Choose from blue, green, purple and pink. If these 330ml options are too small for your hydration needs then Sistema also does 640ml and one-litre options too.


  • Dishwasher-safe
  • Easy to use twist spout
  • Great value


  • Twist cap can become loose over time

Key specs

  • Material: BPA-free plastic
  • Capacity: 330ml
  • Dishwasher-safe: Yes
  • Lid type: Twist 

3. Best leakproof water bottle: Contigo Swish Autoseal Water Bottle

Cognito water bottle

Price: £15.28 | Buy now on Amazon

“We’ve used these Contigo ones for years as my DD could never remember to put the spout down. You have to press to have a drink then it closes when they stop pressing.” spoonyJoe

“I love my Contigo. I just dropped it and damaged the cap though so I need to replace it. Definitely worth the money.” NameChangeFamousFolk

Contigo bottles have a large 500ml capacity and are leak- and spill-proof thanks to the clever lid that only works when you push it in. Ideal if you - or your children - forget to put the spout down or put a lid back on, this also means that the bottle is  easy to operate one-handed when you’re exercising. Even better, the BPA-free plastic is designed not to retain odours and is completely dishwasher-safe to boot. 

There are six bright and fun colourways to choose from and, if more than one member of your household has one, you’ll always be able to tell them apart. 


  • Dishwasher-safe
  • Spill-proof


  • Not cheap

Key specs

  • Material: BPA-free plastic
  • Capacity: 500ml
  • Dishwasher-safe: Yes
  • Lid type: Push

4. Best stainless steel water bottle: Chilly’s Water Bottle

Chilly's water bottle

Price: From £15 | Buy now on Amazon

"I absolutely love mine. Everyone in the family has one and some even have two. Would definitely recommend!” Littlemissalwaystired

"I've had others, but my Chilly's one is amazing. We've all got them now - parents and in-laws included. Once they saw how cold they keep drinks, and for how long, they all wanted [one]!” DontStandSoCloseToMe 

Mumsnetters love these Chilly’s stainless steel water bottles. They come in lots of different colours and patterns so it’s easy to find one for every member of the family. They’re available in three sizes – 260ml, 500ml and 750ml – which makes them perfect for adults and kids alike. 

They can be used for hot and cold drinks and are one of the best insulated water bottles you can buy; Chilly's claims they'll keep hot drinks hot for 12 hours and cold drinks cold for up to 24. Plus, their lids are completely airtight so you don't need to worry about spills when you're on the go.

The only downside is they’re not dishwasher-safe so are trickier than some to keep clean and it’s not recommended to leave them to soak. 


  • Keeps cold drinks cold and hot ones hot
  • Made from hygienic and hard-wearing stainless steel


  • Not dishwasher-safe

Key specs

  • Material: BPA-free stainless steel
  • Capacity: From 260ml to 750ml
  • Dishwasher-safe: No
  • Lid type: Screw top

5. Best infusing water bottle: Bobble Infuse Fruit Water Bottle

Bobble bottle

Price: from £9.99 | Buy now on Amazon

"Bobble bottles are great. A bit pricey, but great. Provided you close them they never leak. I trust them in my handbag.” LibrariesGaveUsPower

“Another Bobble bottle lover here. Daughter has had one for ages with no problems at all.” Heifer

Ever tried infusing your water with delicious fruit? With these BPA-free Bobble Infuse water bottles, you’ll certainly want to. You can quench your thirst and enjoy a fruitful tang at the same time. 

If you don’t want your water to taste fruity then you can add in Bobble’s carbon filter and it will filter your water as you drink - it provides the equivalent of 300 single-serve filtered plastic water bottles, so it’s good for the environment too.

Each bottle holds 590ml and comes in six shades including peacock, sugar plum and citrus. They are reusable, resilient, dishwasher-safe and stylish too.


  • Works as an infuser as well as a regular water bottle
  • Carbon filter is optional


  • Pricey

Key specs

  • Material: BPA-free plastic
  • Capacity: 590ml
  • Dishwasher-safe: Yes
  • Lid type: Straw

6. Best glass water bottle: Black & Blum Glass Water Bottle

Black and Blum water bottle

Price: From £14.75 | Buy now on Amazon

“I use the Black & Blum one-litre glass bottles with the charcoal filters. A bit expensive for the initial layout but the charcoal last six  months and the water does taste really nice (and I’m in London where the tap water is rank IMO).” JemimaTab

“I much prefer the tactile experience of handling a glass bottle. Also, glass has been used for centuries for food storage and I find this reassuring.” Arabicabean

This Black & Blum glass water bottle with a charcoal filter has a  cork and silicone stopper, which is held in place with a stainless steel ring and comes with a fabric finger loop for easy carrying. The bottle’s luxurious curved shape fits ergonomically in the hand. Plus, you get to choose from nine pretty shades.

The charcoal filter stick comes ready to use but you should allow at least one hour - and up to eight - so that minerals like calcium, iron and magnesium can be added while chemicals, like chlorine, are removed. Each filter lasts for around six months after which you can then use it as a deodoriser to remove unwanted smells or break it and use it as a soil fertiliser so that nothing goes to waste.

The resilient glass is shatter-resistant and leakproof but you may still find that it’s not suitable for younger children.


  • Great for the environment
  • Filters the water as you drink


  • Made from glass so could shatter

Key specs

  • Material: Glass, wood and silicone
  • Capacity: 800ml
  • Dishwasher safe: No
  • Lid type: Cork

7. Best plastic water bottle: CamelBak Eddy+ Oxford Water Bottle

Camelbak bottle

Price: £17.99 | Buy now on Amazon

“We are currently using a Camelbak Eddy'bottle. It has a rubbery spout that resists chewing. My son drinks more from it because you suck it like a straw rather than tipping and he prefers that.” MuddlePuddle

“We have Camelbaks too. They don't last forever but they are heads above everything else we have tried. “ PatriciaHolm

It’s easy to see why Mumsnetters like these 750ml water bottles from CamelBak so much. The redesigned cap and 'bite valve' make it easy to sip (no tipping necessary), while the integrated loop handle means it can be carried around comfortably. 

The design of the bite valve means that over time this bottle  can lose its leakproof properties, but if you look after it well it’ll last at least two years.

There are 17 different colours to choose from and other sizes too. You can clean it easily in the dishwasher - just separate the lid, bite valve and bottle to ensure all three elements are thoroughly cleaned. 


  • Bite valve makes them easy to use
  • Dishwasher-safe


  • Can leak over time

Key specs

  • Material: BPA free plastic
  • Capacity:  750ml
  • Dishwasher safe: Yes
  • Lid type: Bite valve

8. Best wide-necked water bottle: Nalgene Leak Proof Everyday Water Bottle

Naglene water bottle

Price: From £13.31 | Buy now from Amazon

“Nalgene bottles are the best ever - bit pricey, but indestructible and leakproof! Plus they are clear but in nice colours and different sizes and tops.” MadisonMontgomery

If you’re after a water bottle that’s guaranteed not to leak all over your things, this one by Nalgene will fit the bill. Mumsnetters recommend it because it comes in 11 colours, is dishwasher-safe, BPA-free and can stand temperatures ranging up to 100 degrees.

The loop top cap makes it easy to carry and it even has a scale on the bottle that lets you monitor your fluid intake throughout the day -  the wide top design makes it particularly easy to stay hydrated.


  • Attached cap so you won’t lose it
  • Scale lets you know how much you’ve drunk 


  • The wide top makes spills more likely

Key specs

  • Material: BPA-free plastic
  • Capacity: 1 litre
  • Dishwasher safe: Yes
  • Lid type: Wide top, screw cap

9. Best sports water bottle: One Greene Bottle

One greene water bottle

Price: £16 | Buy now on Amazon

This 800ml stainless-steel water bottle from One Green Bottle is highly recommended by Mumsnetters as one of the most eco-friendly and easily recyclable water bottles you can buy. For extra eco points, for every bottle sold One Greene will reclaim 25 plastic bottles from the ocean. Even better, it comes with zero plastic packaging.

The bottle is free of BPA  and BPS, and it's also made from high-grade 304 stainless steel for safety-conscious drinking that doesn’t leave a metallic taste in your mouth. Plus, this particular model is designed to be lightweight, which is great if you want to use it on the go.

The sports top is ideal for drinking while you’re exercising to avoid spills. But if you’d prefer a different top it will fit any Classic Canteen Cap, including quench or stainless steel designs, as they are interchangeable and available to buy separately. 


  • Plastic-free packaging
  • Great eco-credentials
  • Stainless steel is hygienic


  • Pricey

Key specs

  • Material: Stainless steel
  • Capacity: 800ml
  • Dishwasher-safe: Yes
  • Lid type: Sports lid

10. Best insulated water bottle: Sho Bottle

Sho water bottles

Price: From £12.77 | Buy now from Amazon

"Mine’s a Sho bottle. I've had it for years and it keeps water cold and coffee hot for hours. Bought smaller versions for the kids. We love them!” Beautiful3

“I’ve been using a Sho bottle for around a year and it’s great. It doesn’t leak and keeps water icy cold for hours. In the heatwave last year the outer of the bottle got quite warm when I was out and about for hours but it didn’t affect the temperature of the water. There’s a great selection of colours, and the bottle has a really nice texture too. It’s not smooth and slippery to hold.” MadisonAvenue

Made from premium grade stainless steel, Sho bottles keep cold drinks cold for 24 hours and hot drinks hot for up to 12. 

One of the biggest selling points is the range of styles. They even do exclusive limited-edition artist collaborations. The powder-coated stainless steel means it’s easy to hold and it’s also scratch-resistant. The manufacturers claim it’s 100% leakproof too.

Profits go to Mart’s Meals, helping to feed and educate children and to the SeaLife Centre in Norfolk - close to where they were invented - to sponsor a seal pen.


  • Keeps cold drinks cold and warm ones hot
  • Comes in a range of styles
  • Durable


  • Lid can be tricky to clean

Key specs

  • Material: Powder-coated stainless steel
  • Capacity: From 260ml to 1 litre
  • Dishwasher-safe: Yes
  • Lid type: Screw top

Are reusable water bottles hygienic?

Reusable bottles are completely hygienic as long as you wash them. One study found that unwashed bottles can contain more bacteria than a loo seat or a dog’s toy. 

If you wash your bottle regularly they can be a great on-the-go alternative to one-use bottles, which are bad for the environment. Currently, 7.7 billion plastic bottles per year end up in landfill in the UK alone. That's an average of 117 bottles per person, per year.

What kind of reusable water bottle is best? The most hygienic material for water bottles is food-grade stainless steel. It’s safe at any temperature and won't leak chemicals into your water if it gets scratched, dented or old.

Studies also show that the most hygienic lid is a straw top but you still need to clean them as often as possible or they risk having 10 times the bacteria found on a loo seat.

Slide-top bottles and screw-top bottles, however, have 80,000 times the bacteria of a loo seat if not washed properly. 

How often should I clean my water bottle?

You should clean your water bottle at least once a day or, ideally, after each use. If your bottle is dishwasher-safe then this will help to properly sterilise it. If not then use warm soapy water every and rinse thoroughly. For a more intensive clean, try bi-carbonate (baking soda) or vinegar mixed with water. Leave to soak overnight and then wash with warm water in the morning. Some people recommend bleach but be wary as it’s not safe to consume and can leave some plastics smelling of a strong odour. 

Which reusable water bottle is best?

The Ion8 Leakproof Slim Water Bottle is the best reusable water bottle. It’s dishwasher-safe, leakproof, and can hold both hot and cold drinks. 

If you’re looking for a bargain then the Sistema Drink Bottle is colourful, durable and great value at under £10 for three. 

The best stainless steel water bottle is Chilly’s Water Bottle, which is one of the best insulated reusable water bottles around.

How we chose our recommendations

All of our recommendations for water bottles came from Mumsnet users themselves. We searched the Mumsnet forums for posts about which bottles, including plastic, stainless steel and glass, that Mumsnetters really loved. We also looked at other reviews to see which water bottles performed well across the board.


Why you should trust us

We work hard to provide unbiased, independent advice you can trust. We do sometimes earn revenue through affiliate (click-to-buy) links in our articles. This helps us fund more helpful articles like this one.