Best Water Flosser for 2018? Compare Oral Irrigator Features & Reviews

Which Water Flosser is Best for You? We Compare Top UK & US Brands.

If you want to keep your mouth as healthy as possible, you should be flossing every day. Statistics show, however, that only a quarter of British and American adults floss regularly. If this is something you struggle with, have you tried an electric water flosser?

Many people are put off using conventional string dental floss for a variety of reasons:

  • It hurts their gums
  • It gets stuck in their teeth
  • They find it too fiddly
  • It takes too long
  • They don’t know how to floss properly

Fortunately, water jet flossers (also known as oral irrigators) address all of these issues by making the process quicker, easier, and gentler on teeth. In this article you’ll discover how these devices work and the different features they come with.

We compare features and reviews of some of the best water flossers available in the UK and the US for 2018 so you can decide which one is right for you.

Can an oral irrigator replace regular floss?

Before we look at the different products on offer, there is one important question to answer: Is water flossing as good as traditional flossing? Can you use an electric flosser as a substitute for dental floss?

keep teeth clean

This may still be the best way to remove plaque

The answer depends on who you ask. One 2013 study showed that water flossing removed 29% more plaque than string floss, while other research has shown a greater reduction in gingivitis (gum disease) from using a water jet flosser.

In addition, oral care manufacturers usually conduct their own tests to show their product is the most effective at X, Y and Z.

Despite this, most dental professionals still advise patients to use string floss – as well as an oral irrigator if they wish. The reason for this is that dental floss physically scrapes plaque off the surface of the tooth, whereas a water jet just rinses it.

Not what you wanted to hear?

Well, a dental water flosser may still be more effective for people who:

  • Have dexterity problems which make it difficult to use normal floss
  • Have very sensitive gums and find traditional dental floss painful to use
  • Are wearing braces
  • Have dental bridges, crowns or implants
  • Just really dislike string floss and are never going to use it!

If you’re serious about good oral hygiene, you could use string floss to loosen any food particles and then rinse your teeth with an electric flosser. But if you can’t use string floss for whatever reason (or just don’t want to), a water flosser is definitely better than not flossing at all!

Traditional string flossElectric flosser
Pros Cheap; scrapes plaque off teeth Quick and easy to use; gentle on gums
Cons Fiddly and time-consuming; may damage sensitive gums Expensive; uses electricity; may not be as effective

Features to consider

Once you decide to purchase a water jet flosser, you still have to work out which brand and model will suit you best. This choice can be quite overwhelming, particularly if it is your first time purchasing one. Here are some of the main things you should consider:

cordless waterpik flosser

There are pros and cons to cordless flossers

  • Mains operated or rechargeable: You may be used to having a cordless electric toothbrush, but some flossers are connected to a base that holds the water reservoir. This unit is quite large, so not ideal for travelling. On the plus side, the larger reservoir means less frequent re-filling, while the flossers themselves tend to be more powerful than cordless versions.
  • Budget: You can spend up to £100 on a top-of-the-range flosser, but some lesser-known brands have basic models for around £25.
  • Settings: Some flossers have just one or two power settings while others have up to 10. Few people will make use of all 10, but it’s good to have options – especially if more than one person in your household will be using the device.
  • Tips: As well as the standard water jet tips, some models come with special tips for different purposes. These include tips for cleaning teeth implants, flossing around braces, and cleaning your tongue.
  • Electric toothbrush compatibility: If you’re short on bathroom shelf space or plug sockets, there are a couple of options. Firstly, you could buy a cordless water flosser that is compatible with the charging base you already have for your electric toothbrush. Secondly, you could purchase an all-in-one unit which incorporates both a toothbrush and flosser.
  • Plug type: Like electric toothbrushes, most flossers come with a 2-pin plug that fits standard bathroom sockets in the UK. However, some have a 3-pin plug which makes them less convenient for bathroom use, so this is something to check before you buy.

Now, let’s take a look at some of the most popular water tooth flossers available in the UK and US markets. We’ll begin with the UK but you can jump straight to the section on water flossers in the US by clicking here.

Comparison of electric flossers in the UK

The following table shows a summary of the features of some of the best water flossers in the UK. Below this you’ll find detailed descriptions and information that we have compiled from real water flosser reviews.
Model Waterpik Ultra Waterpik Cordless Plus Philips Sonicare AirFloss Panasonic EW-DJ10 Travel Flosser Oral-B Oxyjet
Number of tips 6 different 4 different 2 x standard 1 x standard 4 x standard
Cost of standard replacement tip £3.50 £3.50 £4.50 £3.75 £2.50
Number of settings 10 power settings 2 power settings 1 2 power settings 2 modes; 5 power settings
Cordless? No Yes Yes AA battery powered No
Other features 90 second capacity 45 second capacity Auto-burst feature; low water usage Compact design for travel; 40 second capacity Wall-mountable
Warranty 3 years 2 years 2 years 1 year 2 years


The name Waterpik is synonymous with oral irrigators and they have a range of products to suit different needs and budgets. Using a combination of water pressure and pulse technology, their flossers remove up to 99.9% of plaque when applied to an area for just 3 seconds.

Waterpik Ultra (WP-120UK)

Waterpik Ultra WP-120

The Waterpik Ultra has 10 power settings

The Waterpik Ultra water flosser has 10 power settings which range from 10 to 100 PSI. Its six different tips let you clean your teeth and mouth thoroughly even if you have braces, dental prostheses or gum problems.

“It is so easy to use and my mouth feels so much cleaner and healthier” is a comment from one Amazon reviewer, although not everyone agrees. “Fiddly, time consuming and water goes everywhere” says another. But with a 4.5 star rating overall, the feedback is generally positive.

It’s one of the pricier flossers on the market, but it comes with a 3-year warranty for peace of mind.

View the Waterpik Ultra flosser on Amazon

Waterpik Cordless Plus (WP-450UK)


Waterpik’s cordless flosser

If you want a flosser that’s easy to take with you when you travel, you’ll need a cordless model with a built-in water reservoir. Waterpik’s Cordless Plus has two pressure settings offering 45 and 75 PSI of pressure – lower than the full-sized units but still enough to deliver an efficient clean.

It comes with four different tips including a tongue cleaner, and its easy-fill reservoir holds enough water for 45 seconds of use.

Some reviewers found it quite messy to use – at least at first. But since the cordless models are waterproof, it’s possible to use them in the shower where any splashes are not an issue!

In this short video clip you can see the cordless version in use. The user says he loves using it (and it only made that much of a mess because he was trying to talk while using it!).

Quite a few people have had an issue with the battery on the unit, but have been able to get a replacement product quite easily if the fault occurs within the 2-year warranty period.

It’s not that much cheaper than the plug-in version, despite it offering less power and fewer tips. Because of this, you’d probably only choose this model if you wanted to save space travelling.

View the Waterpik Cordless Plus on Amazon



The other big name in the electric flossing market is Philips Sonicare AirFloss. These flossers use a different kind of technology which combines bursts of air and water. Since they don’t have a continuous flow of water they use much less, and so don’t require a bulky reservoir.

This design also makes the Philips water flosser less messy to use, as you don’t have to lean over a sink while water dribbles out of your mouth. Its tips have a thin nozzle which makes it easier to find the correct position between each tooth.

Philips Sonicare AirFloss Pro

Airfloss Pro

Use with mouthwash for a fresher clean

There are two models available: the standard and Pro flossers. Both come in a range of colour options. A single tap of the button delivers one burst, but both models have an auto-burst feature which delivers a burst every second when you hold the button down.

The AirFloss Pro costs around £15 – £25 more than the standard model and comes with the following extra features:

  • Larger reservoir
  • Single, double and triple burst settings
  • A high-performance nozzle which delivers extra power

Both AirFloss models are available to buy in high street stores like Argos and Boots, but you may find more competitive prices online.

View the Philips Airfloss Pro on Amazon


Compared to the Waterpik, the AirFloss doesn’t have as many bells and whistles (no adjustable power settings and only one kind of tip). However, some people find the AirFloss easier and less messy to use because of the way it emits water.


Another brand of oral irrigator stocked in many high street shops and online outlets is Panasonic. They have three models which are all cordless. One, marketed as a ‘travel’ flosser, uses AA batteries while the other two have a charging dock.

EW-DJ10 travel flosser

travel flosser

The compact design is ideal for travel

The travel model, the EW-DJ10, is a cheaper alternative to some other brands while still being a well-known name. Its 165ml reservoir lasts for about 40 seconds, and it has two pressure settings which emit a jet of water.

It’s not just its portability which makes it suitable for travel; the water reservoir doubles up as a travel case to store the nozzle safely and reduce the amount of space it takes up.

It’s slightly less powerful than the rechargeable models and you’ll need to replace the batteries when they run down. Reviews suggest this is about once a month with normal usage. So, if you don’t specifically need this irrigator for its travel features, you may be better off with a rechargeable model.

Read more about this travel flosser


Rechargeable oral irrigators

Panasonic oral irrigatorPanasonic has two rechargeable models which both have variable pressure settings. You can choose between a water jet or water mixed with air, which is recommended for periodontal cleaning. Neither models have pulse action though, which sets them back from Waterpik and Philips models.

The compact design is handy if you’re short on space but it comes with one big downside: it only provides a 35 second capacity. This means you’ll have to refill it at least once – if not more – during each use. Although this is not a big hassle, it’s something that many reviewers found annoying, with one calling it an “oral irritator”.

The price of the basic model is similar to some other models with more features, so might feel you’re getting less for your money than with other brands.

View Panasonic rechargeable irrigators on Amazon



Oral-B Oxyjet

The Oxyjet is wall-mountable and comes with 4 standard tips

Oral-B also has a range of electric teeth flossers but these are not widely marketed in the UK so your best bet is to buy online.

The Oral-B Oxyjet is one of the more expensive flossers on the market. Its unique design emits spiralling water jets filled with micro air bubbles to dislodge plaque, although it also has a straight jet mode. As well as this it has five power settings and is wall-mountable – a handy space-saving feature.

View Oral-B Oxyjet on Amazon


The general consensus from online reviews is that it does the job but the quality and design don’t really justify the price tag. If you’re a big fan of Oral-B toothbrushes, however, a unit which incorporates both devices is generally cheaper (and more compact) than buying both separately.

Summary of UK water flossers

The Waterpik water flosser range offers effective cleaning with variable power settings. People with braces, implants, bridges, etc. may benefit from the different tips designed for these purposes.

Others, however, prefer the simple function of the Philips AirFloss range which uses much less water. The compact, cordless design also makes for easier storage when travelling.

If you want an oral irrigator that’s specifically designed to be compact for travelling, the Panasonic EW-DJ10 is a good, affordable option. Otherwise, you’ll get the best value for money from Waterpik and Philips.

If you’re unsure whether an electric flosser will suit you or you need advice on any specific features, speak to your dentist for their recommendations.


Comparison of electric flossers in the US

This section is about the best water flossers in the US but you can return to the section on UK products here.

Countertop flosser models

We’ll begin by comparing corded countertop models, i.e. those that need to be plugged in to operate. In the table below you can view a summary of the products we have selected as the best products on the market. Following this you’ll find more detailed descriptions and useful information gathered from real reviews of these water flossers.

Model Waterpik Cordless Advanced h2ofloss hf-8 Premium THZY
Number of tips 2 standard + 4 specialist 4 standard + 8 specialist 3 standard + 4 specialist
Cost of standard replacement tip $4.50 $2.50 $3.50 each (in a pack of 7)
Number of settings 10 power settings 5 pressure settings 5 pressure settings
Reservoir capacity 90+ seconds 150+ seconds 90+ seconds
Other features Tip storage in lid, pause button on handle Waterproof, water pressure control on handle UV sterilizer, on/off control on handle, waterproof
Warranty 3 years 2 years 1 year

Waterpik Ultra (WP-100)

waterpik flosserThe Waterpik Ultra Water Flosser is the newest of the many Waterpik models to hit the market. It has a relatively compact design and a low-noise motor (although some users question whether it’s really that quiet). There is also a convenient pause button right on the handle.

This flosser has 10 different water pressure settings, the highest offering 1,400 pulses per minute. Having this many options can be useful if several people with different needs and preferences are using the same device.  The reservoir holds enough water for 90+ seconds of use, depending on the setting you use.

It’s well-equipped with five different tips. You get two standard tips as well as ones suitable for implants & crowns, braces, and periodontal issues.

One reviewer comments on how much easier and more pleasant it is to use than string floss: “I used to dread flossing, but I actually ENJOY using my Waterpik.”

It’s one of the more expensive flossers of this type, but it’s also well equipped and it comes from a trusted name with a generous 3-year warranty.

View this Waterpik on Amazon now


Waterpik also have a unit which incorporates an electric toothbrush as well as a flosser. If you have limited space or don’t want the hassle of charging two separate devices, this could be a good choice for you.

h2ofloss hf-8 Premium

h2ofloss oral irrigatorA product that many reviewers recommend as an alternative to the Waterpik is the h2ofloss hf-8 Premium. At around half the price, it presents great value for money while still providing an effective clean. Not only is the unit price very competitive, but replacement tips also cost around half the price of most other brands – so you’ll be saving money in the long run too.

Its 1,200 pulses per minute is lower than some other models, but many reviewers say they never needed to use it on the highest of the five pressure settings anyway.

The flosser is waterproof with a quiet motor and the reservoir holds enough water for 150+ seconds of use, which should be more than enough for one person to floss without needing to refill it.

You’ll get 12 tips included with your purchase, including 4 color-coded standard tips and additional ones for cleaning the tongue, periodontal pockets, and braces. There are even two types of nasal spray!

A handful of negative reviews mention problems with leaking, but any issues like this are covered by the 2-year guarantee. Overall, people rate it as a good product for a good price.

View this h2ofloss water flosser on Amazon



THZY oral irrigatorThe THZY oral irrigator emits water at 1,250 – 1,700 pulses per minute with five different speed settings. It comes well equipped with three standard tips as well as four others including a tongue cleaner and ones for use with braces, implants, bridges and crowns. You can buy a full set of seven replacement tips but not, it seems, just individual types. This is fine if you use them all equally but could turn out expensive in the long run if you need to replace one sooner than others.

The feature that makes this flosser different is its built-in UV sterilizer. After flossing, you place the tips in the holder at the side and the sterilizer runs for a set time to help keep the nozzles clean.

Reviewers comment on its good design, including suction cups to stop the unit from slipping during use. It seems many people choose this flosser over the Waterpik because of its comparative value for money and the fact it is still well-equipped with different tips.

“Wow, this water floss or does an awesome job! I have a permanent brace on the back of my bottom teeth and this cleans it extremely well. I also love the UV sterilizer, which is why I chose this over the comparable WaterPik model.” is the comment from one user.

Read more about the THZY flosser here


Cordless flosser models

Now let’s take a look at the best cordless water flossers available. Below this summary table you’ll find more information and product reviews of each flosser.

Model Waterpik Cordless Advanced Poseidon Oral Irrigator Panasonic EW1211A Cordless
Number of tips 2 standard + 1 implants + 1 orthodontic 2 standard 2 standard
Cost of standard replacement tip $4.50 $5.00 $5.00
Number of settings 3 power settings 3 modes 3 modes
Reservoir capacity 45 seconds 60-80 seconds 35 seconds
Other features Waterproof, ADA accepted, fast charging Water-resistant, auto shut-off Waterproof
Warranty 2 years 1 year 2 years

Waterpik Cordless Advanced (WP-563)

There are a number of cordless Waterpik flossers available, including one which uses AA batteries – handy if you’re travelling and don’t want the hassle of carrying a charger and finding a plug socket.

Waterpik cordless advanced

You’ll find the best features with the Waterpik Cordless Advanced

However, the Waterpik Cordless Advanced is by far the best cordless flosser in terms of features and ease of use. It has a number of features which make it stand out from other cordless models, including:

  • Waterproof design
  • 3 types of tip for standard use, implants, and braces
  • Rapid 4-hour charge
  • 3 pressure settings
  • Travel bag
  • ADA Seal of Acceptance
  • 45-second reservoir capacity

At almost double the price of the other cordless models we mention here, though, you’ll need to decide whether these features are worth the extra money. The fact that it is waterproof is certainly handy if you find flossing over the sink too messy and want to use it in the shower. Cheaper models also don’t have the special tips for use with braces and implants.

“Great for travel. Not as powerful as a home unit but gets the job done on a long trip.” says one reviewer, and this sentiment is echoed among many users. The power isn’t the same as the corded version but if you want a cordless model this does the job and has some of the best features.

View the Waterpik Cordless Advanced on Amazon



poseidon water flosserThe Poseidon Oral Irrigator is another feature-packed flosser with three spray modes, a quiet motor, and a two-minute automatic shutoff. It comes with two standard tips which are color-coded so you can easily see whose is whose. Replacement tips are available directly from the manufacturer.

It sprays an ultra-fine 0.6mm water jet, and you can choose between normal and soft continuous modes or a pulse mode. The water reservoir last between 60 and 80 seconds, depending on the mode. It takes around 8 hours to charge but this charge should last 1-2 weeks.

If you have limited shelf space in your bathroom, this flosser could be a good choice as its base is smaller than some other cordless ones. It’s also water-resistant so can be used in the shower.

The only downside seems to be some reviewers complaining about the unit breaking after just a few months. However, others say it has lasted them two years or more. The manufacturer offers a 1-year guarantee so this should offer some peace of mind.

Read more about the Poseidon Oral Irrigator


Panasonic EW1211A

panasonic oral irrigatorThe Panasonic EW1211A’s water jet delivers 1,500 pulses per minute to dislodge food debris from teeth and gum pockets. There are two speed settings for the pulse mode, as well as a stronger continuous jet mode. The soft mode is suitable for children and people with sensitive gums.

You get two tips included with the unit, and these have colored bands so you can easily tell them apart. Its waterproof design means it’s easy to clean and you can use it in the shower.

This flosser comes with a charging stand, which makes the footprint larger than some others, but also allows for tidy storage of the unit and one spare tip.

The main downsides of this flosser are the capacity and charging time. It only holds enough water for 35 seconds of use and takes 15 hours to charge. Both these factors make it less user-friendly than the other brands we have included. One reviewer says he has to refill it five times each use, which is quite inconvenient.

People seem generally happy with the performance of the product, though. If you can put up with the small reservoir, it’s an affordable choice from a well-known brand name.

View this Panasonic cordless flosser on Amazon


Summary of US water flossers

Despite Waterpik being the name that dominates the market, there are plenty of other lesser-known brands offering efficient and affordable products. In choosing the best water flosser for you, you’ll need to decide which features you’re willing to pay more for and which are not necessary. Also think about the amount of space you have available in your bathroom, as some take up a lot more space than others.

When it comes to cordless flossers, the Waterpik Cordless Advanced offers the best features if you’re willing to pay a bit extra. In the countertop flosser market, however, there are several other brands offering similar (or better) features for a lower price. In this case, it could be worth giving a lesser-known brand a try.

We recommend you speak to your dentist if you’re unsure whether an electric flosser is right for you. They may also be able to recommend a model that’s suitable for your personal needs.