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Waterpik Ultra Professional WP-100E4 Review

The Waterpik Ultra Professional WP-100E4 is a professional-grade water flosser designed for optimal oral care. It features an advanced pressure control system that allows you to select from three different pressure settings and customize your flossing experience. The Waterpik also offers a patented pulsating stream of water that has been clinically proven to remove up to 99.9% of plaque from treated areas, making it one of the most effective ways to achieve healthier gums and brighter teeth.

The device features an adjustable pressure control dial for customizing the flow of water according to your own oral care needs. It also has 10 cleaning tips included with the unit, including the orthodontic tip and plaque seeker tip.

When using this product, you can be sure that each and every time you floss, it will effectively remove 30% more plaque than regular string flossing. This makes it a great choice for those who don’t have the time or patience to use traditional string flossing methods. In addition, its ergonomic handle makes it easy to use , even for those who are just learning how to floss properly.

One of the unique features offered by the Waterpik Ultra Professional WP-100E4 is its advanced pulse modulation technology. This technology helps to ensure that you get an even and thorough clean each time you use it. It also allows for optimal cleaning power when using the various tips included in the package. In addition, this product is quiet and relatively lightweight, making it perfect for travel or storage in a small space.

Overall, the Waterpik Ultra Professional WP-100E4 is an excellent choice for people looking for a powerful and effective water flosser with plenty of convenience features built into it. Its adjustable pressure control dial, advanced pulse-modulation technology, and ergonomic handle make it a great choice for anyone looking to improve their oral hygiene routine. With its superior performance, this product is sure to be beneficial for many users.

Mouthwashers are a good alternative to clean interdental spaces without flossing.

  • Many users prefer the ease of use and good results to the use of regular floss.
  • One of the most popular models in recent years is the WP-100 oral irrigator from the manufacturer Waterpik.

Since this oral irrigator has been on the market for some time, I will additionally go into user reviews from the Internet as well as other independent test reports, in addition to my personal experiences.

The most important data at a glance:

This oral irrigator cleans the interdental spaces very thoroughly & conveniently. It offers comprehensive functions and is an absolute sales classic for nothing. Since there are now successor models you can get the WP100 at very interesting offer prices. I can recommend this oral irrigator all around.

If you are currently thinking about buying an oral irrigator, you should definitely also consider the Waterpik WP-100 oral irrigator.

In the following chapters, I will go over both the general advantages of an oral irrigator and the specific advantages and disadvantages of the Waterpik 100 Oral Irrigator.

Use the links to jump directly from the table of contents to the chapters that are of particular interest to you:

Read on to find out what functions and features the device offers.

Why an oral irrigator is recommended

Statistics prove time and time again that most Germans find flossing too much of a hassle and therefore do not practice it.

While flossing, the space between the teeth is extremely susceptible to plaque buildup and the resulting gingivitis and tooth decay.

floss teeth

Reaching for dental floss is actually mandatory – but many find it too much effort to use.

A mouth shower can help here to clean the interdental spaces gently and thoroughly. Via a jet of water or a mixture of water and air, the interdental spaces are freed from food residues and deposits.

If you regularly clean your oral cavity with an oral irrigator in addition to brushing your teeth, you can avoid problems such as bad breath or gum inflammation.

The common disease periodontitis is often a direct result of bacteria buildup between the teeth.

Note: Even the best oral irrigator cannot replace dental floss. Even if you use an oral irrigator in your daily dental care routine, you may need to floss stuck food debris from time to time.

But that does not happen too often, at least for me – which is why such a device saves a lot of time in dental care.

Interesting to know: Even if the Waterpik brand is not as well known in Europe as Braun or Philips, it is, for example, in the US the absolute measure of things. This company, which invented the oral irrigator, is the absolute market leader there (and rightly so, I think)

First impression

Very well solved is the compact design of the Waterpik WP-100 oral irrigator. The attachments can be stowed in the lid of the water tank and the handheld unit of the oral irrigator is stationed directly in a holder on the housing.

So you have everything you need directly at hand. The water tank holds 650 ml, sufficient to be able to complete even a longer cleaning time.

waterpik comparison

The WP-100’s design certainly won’t win any beauty awards (especially compared to its successor, the WP-660, but it’s purposeful & durable.

At first glance, the only thing that seems a bit tricky is the hose that connects the handpiece to the water tank. Here you must be careful to find the right distance and always wrap the hose carefully to avoid damage.

Tip: The successor model WP-660 improves the already convincing WP-100 still something & is available in different colors*.

Cleaning Performance

For an oral irrigator to work it should meet certain technical requirements. Here is an overview of the performance range of the Waterpik WP-100:

  • Water pressure settings: 10
  • Attachments: 7
  • Suitable for braces, implants and crowns: Yes
  • Water tank: 650 ml
  • Power supply: Mains operation

To help you better understand what these benefits are good for, I will introduce them in more detail below.

The pressure settings of the Waterpik WP-100 oral irrigator

The individual adjustment of water pressure is one of the most important features of an oral irrigator

wp100 pressure levels

You can easily adjust the pressure levels of the WP-100 on this wheel.

Only when the water pressure is adjustable so that you can set it for your usage needs does an oral irrigator make sense. Too little pressure can prevent cleaning success, and too much pressure can hurt your gums.

  • On the Waterpik WP-100 oral irrigator, you will find ten setting options for water pressure.
  • These start at 0.7 bar and range up to a remarkable 6.2 bar. You can change the pressure levels via a rotary control on the housing.

Note:Always start with the weakest setting first and slowly increase the pressure until you achieve a cleaning process that is comfortable for you and efficient at the same time.

Tip: For stubborn food residues, you can also temporarily and selectively increase the pressure. However, it would be more advisable to reach for the dental floss in such cases.

The included attachments of the Waterpik WP-100 oral irrigator

In the package of the Waterpik WP-100 oral irrigator, you will find seven different attachments that perform different functions.

Even with high-end devices among oral irrigators, you will hardly find more attachments.

The individual attachments of the oral irrigator at a glance:

Conclusion: For a device in this price range, the equipment is really very comprehensive. Not all attachments are necessary in daily use, but especially if you use your oral irrigator for a longer period, the variations make sense to increase and vary the cleaning performance.

Special attachments for braces wearers make this oral irrigator versatile.

The Waterpik WP-100’s water tank

What I particularly like is the lid of the water tank of this oral irrigator, which holds the attachments at the same time

wp100 water tank

The water tank holds enough liquid for several passes.

I have seen other oral irrigators that do not have a lid for the water tank.

To me, this has always made a rather unhygienic impression, even if you change the water regularly.

  • The size of 650 ml is absolutely sufficient to perform even an intensive cleaning of the oral cavity, without having to refill water in between.
  • Practical is that you can remove the entire water tank for filling. So you do not need a second vessel to fill the tank.

The water tank is also suitable to hold additional liquids such as special mouthwash for oral irrigators. Try this to give your oral cavity an additional protection against bacterial infestation in addition to cleaning.

The power supply of the Waterpik WP-100 oral irrigator

For the water pump to work, you must always plug the station into the mains

  • The operating noise is not exactly quiet, but it is within the acceptable range for oral irrigators.
  • Who uses an oral irrigator for the first time, however, should be prepared for a rather loud operating noise.

Because the Waterpik WP-100 oral irrigator is a stationary oral irrigator, it is relatively difficult to take it with you when traveling.

The Sonicare Airfloss

The Sonicare Airfloss has slightly less power, but is compact & portable.

Here, alternatives like the Philips Sonicare Airfloss reviewed here are more suitable, as these oral irrigators are portable.

The operability of the Waterpik WP-100 oral irrigator

Negative is noticeable that there is no instruction manual in German. However, those who know little English can very easily find out about the operation on the Internet or simply use the device quite intuitively.

It is important to set the water pressure to a low level when using the device for the first time. The attachments are relatively easy to change by pressing a small button. Some users also advise cleaning the oral irrigator with vinegar from time to time to prevent possible limescale buildup.

The design

I personally like the compact design of this oral irrigator. Everything has its place and everything has been thought of. Judging by the price-performance ratio, you get a well thought-out and coherent device here.

Whoever attaches importance to a better and more stable workmanship must reach for an alternative that is significantly higher in price.

Useful data

Here I have summarized some more of the most important data of this oral irrigator for all those who are interested in the technology:

  • Weight: 1.16 kg
  • Maximum water pressure: 6.2 bar
  • Water tank: 650 ml
  • Pumping frequency: 1,200 pulses per minute
  • Material: plastic
  • Pause button on the handle

The advantages and disadvantages at a glance

The main advantages of this popular oral irrigator are

  • Very good value for money
  • Adjustable water pressure
  • 7 attachments included
  • Can also be used for braces and crowns

There are also small drawbacks, but they are minor

  • Little length of the water hose
  • No German operating instructions


Honestly speaking, there is little that can be done better.

Mouthwash for sensitive gums

The WP-660 successor is a bit more sophisticated, but it also costs more.

Some oral irrigators come with even more attachments or can vary the pressure directly via the handset. However, this does not make much difference in my opinion.

Very convincing – but also significantly more expensive – is the big and new brother of the Waterpik WP-100, the Waterpik 660*.

In a similar vein is the special version Waterpik WF-05EU, which has some extras such as fillable tablets for teeth whitening.

In addition, you will find there an even better workmanship, a more elaborate control in the hand element and a massage function for the gums.

However, this variant is hard to find, which is why I advise them to go with the 660. And if you want to whiten your teeth, you’d better reach for special whitening strips for at home.

Tip: Since the new Waterpik 660/WF-05EU are on the market, there are the Waterpik WP-100 sometimes at very reasonable offer prices.

More information about oral irrigators and a test of various current models

If you want to know how the Waterpik WP-100 compares to other oral irrigators and what advantages and disadvantages mobile oral irrigators have, I can recommend this post titled “Oral irrigators in test: these devices replace dental floss”

Summary on the Waterpik Ultra WP-100E4

The WP-100 is a very thorough oral irrigator at a very affordable price

For the price charged, this oral irrigator provides enough pressure to thoroughly clean your teeth and interdental spaces. In addition, the station is conveniently designed, easy to use and clean.

Check out the current prices for the Waterpik WP-100 oral irrigator, it’s not for nothing that this model is one of the most popular and still tops the bestseller lists.