Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. We will send you an e-gift card for the purchase price of your covered product. In some instances, we will replace or repair it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. We will send you an e-gift card for the purchase price of your covered product. In some instances, we will replace or repair it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- Buy a lot of stuff on Amazon? Tons of items eligible for coverage, from the latest tech like Laptops, Game Consoles, TVs, Phones, and Cameras to major appliances, sporting goods, tools, toys, personal care, furniture, and more (not eligible for commercial or business use items).
- Accidents Happen. That’s why for your portable products we cover accidental damage from handling such as drops, spills and cracked screens. We also cover electrical and mechanical malfunctions, power surges, and wear and tear.
- Today's and Future Purchases covered. 30 days after you are enrolled, all eligible purchases today and eligible future purchases made on Amazon will be covered by your plan as long as you are enrolled.
- Fast, easy claims. Frustration-Free claims, with most filed in minutes. We will fix it, replace it, or reimburse you with an Amazon e-gift card for the purchase price of your product (excluding tax). File at Asurion.com/amazon.
- No Hidden Fees. For just $16.99 a month + tax you’re covered for up to 5,000 in claims per 12-month period. *THIS PROGRAM IS MONTH-TO-MONTH AND WILL CONTINUE UNTIL CANCELED* Coverage for all products ends 30 days after the plan is canceled. Cancel any time.
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
Buy new:
$80.08$80.08 $80.08 per Count ($80.08$80.08 / Count)
Ships from: Amazon.com Sold by: Amazon.com
Save with Open Box – Like New
$53.44$53.44 $53.44 per Count ($53.44$53.44 / Count)
Ships from: Amazon Sold by: Amazon Resale
-
-
-
-
-
-
-
7 VIDEOS
-

Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
Waterpik Aquarius Water Flosser Professional For Teeth, Gums, Braces, Dental Care, Electric Power With 10 Settings, 7 Tips For Multiple Users And Needs, ADA Accepted, Blue WP-663, Packaging May Vary
Learn more
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Learn more
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Bundles with this item
Purchase options and add-ons
Brand | Waterpik |
Power Source | Corded Electric |
Special Feature | Timer, Multiple Pressure Settings, Rotatable Tip, Multiple Operation Modes, Multiple Tips |
Product Benefits | Removes Plaque, ADA Accepted for Safety and Effectiveness, Gum Health |
Unit Count | 1 Count |
About this item
- ADVANCED WATER FLOSSING: Aquarius is a fully featured water flosser featuring enhanced pressure with 10 settings for a custom clean, massage mode for gum stimulation, plus a built-in timer/pacer pauses briefly at 30 secs and 1 min to track flossing time.
- EASY TO USE: Features a large reservoir for 90+ seconds of use, no refilling required. Small maneuverable flossing wand makes it easy to floss all areas including back teeth and includes a convenient water on/off switch.
- DENTIST RECOMMENDED: Waterpik is the #1 water flosser brand recommended by dental professionals and the first water flosser brand to earn the American Dental Association (ADA) Seal of Acceptance for safety and effectiveness.
- KEY FEATURES: 7 tips for multiple family members and needs, 10 safe and effective pressure settings, removable 22 oz reservoir (top-rack dishwasher safe for easy cleaning), 90+ secs floss time, 360 tip rotation, 120VAC/60Hz for use in North America only.
- PROVEN EFFECTIVE: Waterpik water flossers use PrecisionPulse technology to deliver a combination of water pressure and pulsations, removing up to 99.9 percent of plaque bacteria from treated areas that cause gingivitis, cavities, and bad breath.
- WARRANTY AND SUPPORT: Backed by a 3-year limited manufacturer’s warranty, see manual for details. Waterpik’s Colorado support team is available to help with any product questions or needs.
Buy it with

Frequently purchased items with fast delivery
From the brand

-
Not all water flossers are the same. Choose the Waterpik brand and take control of your oral health.
- #1 water flosser brand recommended by dental professionals*
- Accepted by the ADA for safety and effectiveness
- Backed by 80+ clinical studies
*Professional AAU, 400 dental professionals, October 2023
-
-
-
Shop Water Flossers
-
-
-
Shop Cordless Water Flossers
-
-
-
Shop Sonic-Fusion
-
-
-
Shop Complete Care
From the manufacturer

How to Water Floss in 3 Easy Steps
Fill reservoir with warm water
Fill reservoir with warm water and click a flossing tip into the handle.
Lean over sink
Lean over the sink and place flossing tip in mouth.
Turn unit on
Turn unit on, aim the tip along your gumline, and let water flow from your mouth into sink.
Smart Features - Aquarius Water Flosser
Optimal Control
- Customize your cleaning power with 10 settings ranging from extra low to extra high
- Floss Mode provides maximum plaque removal and Hydro-Pulse Massage Mode offers enhanced gum stimulation
- 1-minute timer pauses briefly at 30 seconds to help track your flossing time
High Volume Reservoir
- Removable reservoir holds 22 ounces for 90+ seconds of flossing time
- Add a splash of your favorite mouthwash for an even fresher clean
- Top-rack dishwasher safe - air drying recommended
Precision Flossing Wand
- Small, slim handle provides easy access to all areas
- 360-degree rotating tip reaches your whole mouth, even back teeth
- Easily stop and start water flow with convenient on/off switch
Compact Design
Height: 10.35 inches (with tip)
Width: 4.7 inches
Depth: 3.8 inches

The Aquarius water flosser comes with 7 tips for a variety of dental needs:
- 4 Precision (Classic) Tips (JT-100E)
- 1 Plaque Seeker Tip (PS-100E)
- 1 Orthodontic Tip (OD-100E)
- 1 Pik Pocket Tip (PP-100E)
(Additional genuine Waterpik brand flossing tips available separately)
![]()
Waterpik Sonic-Fusion 2.0 Professional Flossing Toothbrush
|
![]()
Waterpik Sensonic Complete Care Electric Toothbrush + Water Flosser
|
![]()
Waterpik Aquarius Water Flosser
|
![]()
Waterpik ION Professional Cordless Water Flosser
|
![]()
Waterpik Sidekick Water Flosser
|
![]()
Waterpik Nano Plus Water Flosser
|
|
---|---|---|---|---|---|---|
Customer Reviews |
4.5 out of 5 stars 17,958
|
4.5 out of 5 stars 435
|
4.6 out of 5 stars 145,798
|
4.2 out of 5 stars 6,378
|
4.4 out of 5 stars 1,586
|
4.4 out of 5 stars 7,020
|
Price | $176.77$176.77 | $197.90$197.90 | $79.99$79.99 | $99.99$99.99 | $127.45$127.45 | $59.99$59.99 |
Floss Settings | 10: Ranging from Extra Low to Extra High | 10: Ranging from Extra Low to Extra High | 10: Ranging from Extra Low to Extra High | 10: Ranging from Extra Low to Extra High | 5: Ranging from Low to High | 5: Ranging from Low to High |
Removable Water Reservoir | Yes, 60+ seconds flossing time, hinged lid | Yes, 90+ seconds flossing time, hinged lid | Yes, 90+ seconds flossing time, hinged lid | Yes, 90+ seconds flossing time, hinged lid | Yes, 60+ seconds flossing time, inverts over unit | Yes, 60+ seconds flossing time, inverts over unit |
# of Tips/Brush Heads | 2 Flossing Brush Heads | 5 Tips, 2 Brush Heads | 7 Tips | 7 Tips | 1 Stylus Tip | 4 Tips |
Flossing Tips | 1 Compact Flossing Brush Head, 1 Full Size Flossing Brush Head | 2 Precision (Classic), 1 Orthodontic, 1 Plaque Seeker, 1 Implant Denture | 4 Precision (Classic), 1 Orthodontic, 1 Pik Pocket, 1 Plaque Seeker | 2 Precision (Classic), 1 Orthodontic, 1 Plaque Seeker, 1 Pik Pocket, 1 Tongue Cleaner, 1 Implant Denture | 1 Flossing Stylus | 2 Precision (Classic), 1 Orthodontic, 1 Plaque Seeker |
Electric Toothbrush Included | Yes, combined with water flosser | Yes, separate from water flosser | No | No | No | No |
Water On/Off on Handle | ✓ | ✓ | ✓ | ✓ | No | ✓ |
Rechargeable | Toothbrush only; water flossing uses electric power | Toothbrush only; water flossing uses electric power | No | ✓ | No | No |
Accessories | Toothbrush travel case | Toothbrush travel case | no data | Tip storage case | Travel bag | no data |
Voltage | Global | Global | North America Only | Global Voltage Compatible | Global | North America Only |
Dimensions with tip/brush head (inches) H x W x D | 10.88 x 5.25 x 6.0 | 10.50 x 5.25 x 5.5 | 10.35 x 4.70 x 3.8 | 7.56 x 6.2 x 6.13 | 4.84 x 5.70 x 5.5 | 8.50 x 5.0 x 4.5 |
Product Description
The Waterpik Aquarius water flosser features a compact, contemporary design and advanced water flossing technology for maximum performance. It comes with 7 flossing tips for a variety of dental needs and multiple users, a convenient one-minute timer with 30-second pacer to ensure thorough water flossing of all areas, and a removable water reservoir with 90+ seconds of flossing time. The special 360-degree rotating tip handle easily reaches your whole mouth, even back teeth. The Waterpik Aquarius water flosser removes up to 99.9% of plaque bacteria that causes gingivitis, cavities, and bad breath from treated areas and is clinically proven up to 2X as effective as string floss for removing bacterial plaque and improving gum health. Waterpik is the #1 water flosser brand recommended by dental professionals, and the Waterpik Aquarius water flosser is accepted by the American Dental Association (ADA) for safety and effectiveness. Backed by a 3-year manufacturer's limited warranty, see product manual for details.
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 3.8 x 4.7 x 10.3 inches; 1.46 Pounds
- Item model number : WP-663
- UPC : 073950236591
- Manufacturer : Water Pik, Inc.
- ASIN : B072JFVXSY
- Country of Origin : China
- Best Sellers Rank: #296 in Health & Household (See Top 100 in Health & Household)
- #2 in Power Dental Flossers
- Customer Reviews:
Videos
Videos for this product
3:52
Click to play video
2 Things you MUST know before buying!! Full Review❇️ Chad Brown ❇️
Videos for this product
0:38
Click to play video
DETAILED REVIEW- How well does it work?Rachel Holtzapfel
Videos for this product
1:35
Click to play video
Turewell vs Waterpik Water Flosser Comparison!David
Videos for this product
2:21
Click to play video
Waterpik Water Flosser Comparison (HEAD to HEAD!)David
Videos for this product
0:56
Click to play video
6 Months of Use *Update*...HONEST REVIEW✅MikeyReviews✅
Videos for this product
1:14
Click to play video
Very thorough review- water pik for the win!Hornbaker House Reviews ✅
Videos for this product
7:40
Click to play video
DON'T BUY UNTIL YOU WATCH! Waterpik Water Flosser ProOur New Beginning
Important information
Safety Information
[Presence of safety warnings, not explicitly specified, but potential contents include: 'Keep out of reach of children', 'Avoid contact with skin and eyes']
Directions
1. Fill the reservoir with warm water, place the tip in your mouth, and start flossing. 2. Use one of the 10 pressure settings for a custom clean. 3. Use the massage mode for gum stimulation. 4. The built-in timer/pacer pauses briefly at 30 seconds and 1 minute to help track flossing time. 5. After use, clean the flosser by emptying the reservoir and rinsing the tip. 6. For best results, use daily. 7. Refer to the user manual for maintenance and troubleshooting information.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the water flosser effective and powerful, delivering professional-level cleaning at home and improving teeth and gum health. They appreciate its ease of use, with good instructions provided, and consider it worth the price as it helps save on dental bills. The size receives mixed feedback - while the reservoir is the right size, customers note it requires space in the bathroom. The noise level is also mixed, with some finding it quieter than the original while others describe it as annoyingly loud.
AI-generated from the text of customer reviews
Customers find the water flosser effective, with one customer noting it works better than traditional flossing and another mentioning it performs like a dental office machine.
"...The on/off switch on the handle is a convenient feature. This unit comes with four "personal" color coded tips so the family can all use this...." Read more
"...But other than those two issues, my Ultra worked flawlessly, I never had to replace the hose or the handle as some owners had to, the on-off switch..." Read more
"...Highly recommend if you’re looking for a more effective and satisfying way to floss — especially if you hate string floss or have dental work." Read more
"...using it, and going from my annual checkup at the dentist, the results were amazing...." Read more
Customers praise the water flosser's cleaning ability, noting it effectively removes food particles and leaves their teeth feeling clean and refreshed, with the tubing being easy to clean.
"...There are also 3 specialized tips for specific cleaning needs. These would need to be cleaned and sanitized after use to allow sharing...." Read more
"...at 30 seconds of use and another at 60 seconds, this is good to pace your cleaning as it should take about 30 seconds to clean each part of the mouth..." Read more
"...noticed a difference immediately after using it as to how clean my teeth were and now it’s part of my daily routine...." Read more
"...It’s easy to use, powerful, and leaves my mouth feeling cleaner than regular floss ever has...." Read more
Customers find the water flosser easy to use and set up, with one customer noting that it comes with good instructions.
"...The adjustable flow rate allows easy setting to just the right pressure for your particular gum heath needs...." Read more
"...It’s easy to use, powerful, and leaves my mouth feeling cleaner than regular floss ever has...." Read more
"...Again it was easy to use, and starting with a low pressure number, I quickly got used to the pulsating action and within a week was at the highest..." Read more
"...In my opinion, it does not take up much counter space. Some tips are provided to start with. Satisfied with this unit." Read more
Customers find the water flosser well worth the cost.
"...doing a lot of research I have found that Amazon gives the absolute best price for the WaterPik...." Read more
"...Learn from my mistake, this machine is worth every penny." Read more
"Yeah this purchase was worth it. Ease to use and has a bunch of head to use. All of which are great...." Read more
"...flaw of the WP-100, its reservoir valve consist of a rubber piece, very cheap in my opinion, which eventually gives up and start leaking after a few..." Read more
Customers are satisfied with the water flosser's performance, with one customer noting the adjustable water strength settings and another mentioning the pleasant pulsating water flow.
"This is a great water flossing the container holds a lot of water so you can really use it a long time...." Read more
"...If you don't mind the noise, though, this is a solid Waterpik that does it's job well." Read more
"...on/off toggle switch so that once you toggle it on, it keeps flowing without finger pressure, until you toggle it off;..." Read more
"...But if these are the tradeoffs you need for high power and great water flow, it's worth it. But it's noisy...." Read more
Customers report that the water flosser improves their teeth and gum health, enhances their dental care routine, and is perfect for maintaining oral health on the go.
"...Water Flosser for a bit now, and overall, it's a great addition to my oral care routine...." Read more
"...idea how much I’d end up loving this Waterpik, and how it enhances my dental care routine...." Read more
"...34;Removes bacteria and debris from hard to reach areas around dental restorations."..." Read more
"Just got home from cleaning. Hygienist said A+ on gums and teeth. I have had this waterpik for nearly 3 years now...." Read more
Customers have mixed opinions about the size of the water flosser: while some appreciate that the reservoir is just the right size and it fits easily into carry-ons, others find it not quite big enough and struggle to find counter space.
"This is a great water flossing the container holds a lot of water so you can really use it a long time...." Read more
"...multiple pressure settings are a huge plus - you can adjust it to whatever feels comfortable, whether you want a gentle clean or something more..." Read more
"...Using it is a bit clunky. The unit is large making it awkward to fill near shallow sinks, it takes up a lot of space, and it needs to be close to an..." Read more
"...timer to guide you through a full cleaning cycle, and the water reservoir is large enough that I don’t need to refill it mid-use...." Read more
Customers have mixed opinions about the water flosser's noise level, with some finding it quieter than previous models while others report that it is extremely noisy.
"...The only real downside? It's pretty loud, and the tube vibrates quite a bit while in use, which can be a little annoying...." Read more
"...It is a bit loud though, but you’re using it for 5 minutes at most so it’s bearable...." Read more
"...as or more powerful than the WP-100 but it runs better, it sounds less stressed. Same or better results with less noise...." Read more
"...But it's noisy...." Read more
Reviews with images

After every meal since January 2021
Top reviews from the United States
There was a problem filtering reviews. Please reload the page.
- Reviewed in the United States on January 30, 2025Color: BlueVerified PurchaseAs a long time fan of Water Pik, this unit is as good as expected. Ample size reservoir holds just enough water for a full cleaning. The adjustable flow rate allows easy setting to just the right pressure for your particular gum heath needs. The on/off switch on the handle is a convenient feature.
This unit comes with four "personal" color coded tips so the family can all use this. There are also 3 specialized tips for specific cleaning needs. These would need to be cleaned and sanitized after use to allow sharing.
One minor negative for me: the button to release the water tip is situated on the handle such that it is somewhat easy to inadvertently release the tip while flossing. This, of course, causes excess water spillage around the handle. One needs to learn how to grasp the handle so that this release is not triggered. I did not deduct for this issue, as I was able to (quickly) figure out what I was doing and how to prevent it.
5 STARS AND I DO RECOMMEND THIS ITEM
I write honest reviews based on real life experience with each item to help others make informed purchases. I read reviews too, and appreciate how helpful they can be. I hope that you find this review helpful!
- Reviewed in the United States on February 10, 2015Color: WhiteVerified PurchaseLooking at the reviews, there seems to be a consistent effort by what I take are some owners of the venerable Waterpik WP-100 Ultra to trash this new model and portrait it as inferior to the WP-100. I don't think this is the case, the WP-660 is an improvement over the WP-100 in many ways and I'll tell you why later. The funny thing is that when I bought my WP-100 about six years ago, there were some reviews from what I take were owners of the revered WP-60 Classic trashing the WP-100. I take some people prefer the old to the new and that's OK. But I think some reviewers are being unfair to the Aquarius
I owned a WP-100 that lasted for little over six years, used almost every day by two people, those are a lot of days so the WP-100 is an outstanding product. I did have to replace the water reservoir once due to the cheap rubber valve mechanism -improved on the Aquarius as you will see- that failed after three years of use and started leaking. Also, the hook for the handle broke -also improved on the Aquarius- and it was very difficult if not impossible to hang the handle onto the Waterpik body, I had to makeshift a Velcro handle that looked terrible. Googleing around I was surprised to find that this is a common issue with the WP-100, some owners have replaced the entire unit just because of a broken handle as there is no spare part available from Waterpik. Boomer
But other than those two issues, my Ultra worked flawlessly, I never had to replace the hose or the handle as some owners had to, the on-off switch never failed and it worked the same way it was when new until an accident damaged the power-cord and it stopped working. Given its state with the handle hook and its age, I thought about self-repairing it but then I decided it was time for a new unit. At first and reading all those pro-WP-100 anti-WP-660 reviews I was tempted to get another WP-100, but the price of the Aquarius was about the same as the Ultra so I decided to give it a try
I'm glad I did. The first thing you notice with the Aquarius is its modern look and high quality materials, all white and clear, and gorgeous, a significant design improvement over the WP-100. It is also lighter, which some can argue is a good thing -like me- and some can argue it is a bad thing because it "feels" cheap, which is also a valid point. The important thing is that its weight doesn't compromise its operation in any way, it won't tip-off when used nor will slide or be unstable, it is just lighter. It might be due to the use of cheaper materials on the pump as some have argued here, or just lighter materials, an overall technological improvement rather than cheapening the unit off. I guess time will tell which one is more durable, or we will have to open both units and compare its guts to get a final answer. So, why is the Aquarius better than the WP-100, other than it looks?
-The WP-660 is less noisy and runs smother than the WP-100, you notice this right away. This with no compromise to the water pressure, the pressure is steady, as or more powerful than the WP-100 but it runs better, it sounds less stressed. Same or better results with less noise.
-The hook for the handle was replaced by a sturdier piece and a different design to hold the handle, which reduces the pressure on the piece. With the WP-100, it was very easy to push the handle all the way down the hook, either by accident or just because of its design, stressing the hook and eventually breaking it; there was nothing to stop the handle to slide all the way down. As said, mine broke. That was a poor design, fixed on the Aquarius; now you just put the handle on the holder, it cannot be pushed all the way down. Some have argued that makes it difficult to handle the hose, but I didn't find any issues, the hose juts hang there by simple gravity, it doesn't tangle or interfere with the unit in any way
-The reservoir valve was replaced by a metal spring mechanism. This was a another design flaw of the WP-100, its reservoir valve consist of a rubber piece, very cheap in my opinion, which eventually gives up and start leaking after a few years. As said before, the only way to fix it is by buying an entire new reservoir as the little rubber piece is not available alone, which means not only paying way more but also a waste of resources. In contrast, the WP-660 has a stainless steel spring with a plastic cap, that appears way more durable and also a much better and higher quality solution. Only time will tell but it seems it will last longer than the one in the WP-100
-The knob to graduate the pressure is easier to operate. The WP-100 has a hole to put both fingers in, on the Aquarius is a protruding knob, very easy to reach and to manipulate, way better I think, easier to find when in use if needed. And also more ergonomic
-The Aquarius handle has an on-off switch that actually works. The WP-100 has that dreadful push button on the handle that you need to press constantly to stop the flow of water, doesn't stop it completely and also causes the Waterpik to make a noise like the pump is being damaged while the pressure is reverted. Not good at all, it was a poor solution at best, a useless feature at worst, it just didn't work. On the WP-660, there is an actual on-off button; in fact the correct way to operate this new Waterpik is to turn it on the base first, then turn it on via the handle when you already have the tip inside your mouth ready to go, the water doesn't come out unless you turn the handle on. This is much better than having to reach the switch on the base unit with the tip in your mouth or having to hold into the appalling pressure cutting button on the handle and then release it. All this while water was still coming out of the tip as the button didn't cut the water flow completely.
-The pace timer. This feature is non-existent on the Ultra, and I realized it is very helpful. I use the Waterpik first on the upper section of the mouth, outside-inside and then move to the lower section, in-out and I'm done. At a pressure level of 8, the water in the reservoir, at full capacity, should last little less than 90 seconds. The Aquarius will give you a very short flow pause at 30 seconds of use and another at 60 seconds, this is good to pace your cleaning as it should take about 30 seconds to clean each part of the mouth, up and down, and then you have an extra 20 seconds to touch-up. This avoids you having to be periodically peaking over to the reservoir to see how much water is left and instead allow you to concentrate on the cleaning and doing the job properly
-The reservoir cover is now part of the unit. If you are like my mother in law that misplaces everything - sorry mom, I still love you-, chances are you have misplaced the reservoir cover of the WP-100 (as my mother in law did). This cover also contains the tips so it can be kind of an inconvenience to lose it. On the WP-660, the cover is attached with a hinge mechanism to the body of the Waterpik, no way to lose it. The tips are now stored on the unit itself, behind the reservoir
The rest is about the same as the WP-100, it comes with a bunch of tips from which you will probably only use the classic jet, and a 3 years warranty. It also includes a gum massaging mode which is pointless as you can achieve the same results by regulating the pressure knob. One disadvantage to the WP-100 is that you can only store two tips on the unit and not four, but again if you are like me that use only one, this is not an issue. But it might be for some users, if you have braces for example or like to regularly use the one designed for root canal maintenance (the Pik Pocket). One thing that was bad on the WP-100 and remain as bad on the WP-660 is cable management, there is no place to wrap the cable or at least a Velcro band included to deal with the cable, this lack of cable management is in part responsible for the damage to my WP-100 power cord, the cord is just hanging there. A needed improvement for the next design, please take note Waterpik
Overall, I see no disadvantages when compared with the WP-100 and instead see many advantages. Until the unit has more years in the market, speculating about its durability without real facts is pointless at this time, so far the Aquarius works the same or better than the Ultra so it's higher price is justifiable. And you can even get a good deal and get it at the same price or a little cheaper than the Ultra, which is a real bargain
- Reviewed in the United States on March 19, 2025Color: GrayVerified PurchaseThis is a great water flossing the container holds a lot of water so you can really use it a long time. Once you get used to how to hold it you can get all of your teeth without water going all over your sink. I definitely noticed a difference immediately after using it as to how clean my teeth were and now it’s part of my daily routine. Highly recommend for everybody and even my Dentist said this is the product to use.
- Reviewed in the United States on April 1, 2025Color: WhiteVerified PurchaseI've been using the Waterpik Aquarius Water Flosser for a bit now, and overall, it's a great addition to my oral care routine. The multiple pressure settings are a huge plus - you can adjust it to whatever feels comfortable, whether you want a gentle clean or something more powerful. The rotating tip makes it super easy to reach the back of your teeth, which is a big win.
The 22 oz reservoir is just the right size to get through a full flossing session without needing a refill, which I really appreciate. It also has a massage mode, but to be honest, I don't see myself using that feature much.
I also have a very small single sink vanity and the size of this is just right to fit on the counter along with my toothbrush.
The only real downside? It's pretty loud, and the tube vibrates quite a bit while in use, which can be a little annoying. If you don't mind the noise, though, this is a solid Waterpik that does it's job well.
- Reviewed in the United States on March 30, 2025Color: WhiteVerified PurchaseThe Waterpik Aquarius Water Flosser has completely elevated my oral hygiene routine. It’s easy to use, powerful, and leaves my mouth feeling cleaner than regular floss ever has. The 10 pressure settings are great — I started low and gradually increased to find the level that works best for me.
The variety of 7 included tips is a nice touch, especially if you have braces or other dental needs in the household. It’s also really helpful for reaching those hard-to-floss areas and doesn’t cause any gum irritation.
I love that it has a built-in timer to guide you through a full cleaning cycle, and the water reservoir is large enough that I don’t need to refill it mid-use. It feels sturdy, looks clean on the counter, and the ADA acceptance gives me extra confidence that it’s doing its job.
Highly recommend if you’re looking for a more effective and satisfying way to floss — especially if you hate string floss or have dental work.
Top reviews from other countries
- JosephReviewed in Canada on August 4, 2024
5.0 out of 5 stars I use it everyday
Color: GrayVerified PurchaseI am not a big fan of traditional flossing. One day my hygienist recommended to use this product. I was skeptical as I wasn't sure how effective it is. After several use, I can see great results. Now after every meal I use this to see what comes out after every use. I love using
this machine to floss. However, I find that it doesn't get rid of all food particles but it is still more convenient to use.
- yousufdReviewed in the United Kingdom on July 2, 2022
4.0 out of 5 stars Waterpik
Color: BlueVerified PurchaseNot suitable for travel as it works on dc
-
EdgarReviewed in Mexico on February 19, 2025
5.0 out of 5 stars Limpia muy bien
Color: BlueVerified PurchaseYa tenemos más de un año con el aparato y sigue funcionando, lo recomendamos
- Let Me Say This:Reviewed in Canada on January 3, 2025
5.0 out of 5 stars Fantastic gadget for the whole family.
Color: BlueVerified PurchaseThe Waterpik Aquarius Water Flosser has been such a helpful addition to our family’s dental routine. With 10 pressure settings, everyone from my husband to the kids can find their perfect level - no more complaints about flossing being too hard or annoying!
I also love that it comes with seven different tips, so we can each have our own, and it works great for different needs. Whether it’s braces, sensitive gums, or just a good deep clean, this flosser handles it all. The tank is a good size and lasts long enough for a full session without needing a refill.
It’s not the quietest gadget in the world, but honestly, that’s a small price to pay for how clean my teeth feel after using it. It’s so much easier than regular floss, and it feels like a little mini spa treatment for your gums. Definitely worth it for the whole family!
-
Jean-YvesReviewed in France on November 2, 2021
2.0 out of 5 stars Mauvaise surprise.
Color: BlueVerified PurchasePrise américaine. Pas de prise européenne dans le colis.
En 120 volts.
Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.