

💦 Elevate your floss game — because your smile deserves the VIP treatment!
The Waterpik Aquarius Water Flosser WP-660 is a professional-grade oral care device featuring 10 pressure settings, a 360° rotating tip, and a large 22 oz reservoir for over 90 seconds of continuous flossing. ADA accepted and recommended by dental professionals, it removes up to 99.9% of plaque bacteria using patented PrecisionPulse technology. Designed for multiple users with 7 interchangeable tips, it combines advanced functionality with ease of use, backed by a 3-year warranty.



























| ASIN | B00HFQQ0VU |
| ASIN | B00HFQQ0VU |
| Additional Features | Multiple Operation Modes, Multiple Pressure Settings, Multiple Tips, Rotatable Tip, Timer |
| Best Sellers Rank | #443 in Health & Household ( See Top 100 in Health & Household ) #3 in Power Dental Flossers |
| Brand Name | Waterpik |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (153,582) |
| Date First Available | December 20, 2013 |
| Department | unisex-adult |
| Global Trade Identification Number | 00056310179752 |
| Included Components | 1 Orthodontic Tip (OD-100E), 1 Pik Pocket Tip (PP-100E), 1 Plaque Seeker TIp (PS-100E), 1 Stationary Toothbrush (TB-100E), 3 Classic Jet Tips (JT-100E), Waterpik Aquarius Water Flosser |
| Is Discontinued By Manufacturer | No |
| Item Dimensions | 3.8 x 4.7 x 10.3 inches |
| Item Nype Name | Waterpik Performance Water Flosser |
| Item Weight | 1.5 Pounds |
| Item model number | WP-660/660C |
| Manufacturer | Water Pik, Inc. |
| Manufacturer | Water Pik, Inc. |
| Manufacturer Warranty Description | 3 Year Limited Manufacturer's Warranty, see manual for details |
| Material Type | Plastic |
| Model Name | Aquarius Water Flosser |
| Model Number | WP-660/660C |
| Power Source | Corded Electric |
| Product Benefits | ADA Accepted for Safety and Effectiveness, Gum Health, Prevents Bad Breath, Prevents Cavities, Removes Plaque |
| Product Dimensions | 3.8 x 4.7 x 10.3 inches; 1.46 Pounds |
| Recommended Uses For Product | Daily Cleaning, Daily Plaque Removal, Deep Cleaning, Gum Health |
| Specification Met | ADA |
| Tank Volume | 22 Fluid Ounces |
| Target Use Body Part | Teeth |
| UPC | 056310179752 |
| Unit Count | 1 Count |
M**N
Fantastic Waterpik Flosser!
This is a great little machine! It does an amazing job getting into the crevices between my teeth. I love that it gives you so many pressure options as well as all the different picks. So what if it makes a little noise! I saw complaints about the noise in other reviews. What’s important is that it does an amazing job!!! I would most definitely recommend this waterpik flosser.
C**S
Worthwhile long term purchase.
I bought this back in 2019 and it’s still working effectively today. My oral hygiene journey has been sporadic at best but lately I’ve been trying to be better and I can say that the claims that it reduces gum bleeding are true accurate. I tried traditional flossing for the first time in a while recently and did not bleed at all. Independent studies show that the claims that it’s 2x more effective than string flossing are overblown but they do hold that water pic flossers(approved by the ADA) are at least AS effective as string flossing when used properly, if not marginally better. Pros: It’s easier, more comfortable, and faster(for me) to use than traditional flossing. It does reduce gum bleeding, and the product has lasted for at least 6 full years without a noticeable decline in pressure /functionality. All these mean that I actually remember to use it which is the biggest benefit for me. Cons: it leaks. I don’t know from where but if I keep water in the reservoir it creates a puddle now. It’s manageable if you fully empty it each time but it is somewhat annoying. I don’t recall if this has always been an issue. It’s louder than I would like it to be. Also an important consideration when using is how you plan to keep the machine sanitary because this can be way less sanitary than string flossing if you don’t clean it regularly. All in all, a worthwhile long term purchase for me.
T**E
Great Product
Excellent product. My dentist asked that I get a water flosser - but did not say which brand. I purchased this based on the reviews and I am very glad that I did - it works well, cleans my teeth in the hard to get spaces, great water capacity - size is perfect for my sink area. I love this product.
M**D
Great Value with Plenty of Features
I’m very happy with the Waterpik Aquarius Water Flosser for Teeth. It’s reasonably priced for what you get and feels like a solid countertop unit. The reservoir is a nice size and holds enough water to get through a full flossing session without constantly refilling. I also like that it comes with multiple tips and adjustable pressure settings, so you can tailor it to your comfort level. It does a great job keeping our teeth and gums feeling clean, especially along the gumline and around harder-to-reach areas. After using it consistently, everything just feels fresher. If I had one small critique, it’s that it could be a bit more powerful. The cordless model we previously owned seemed to spray with a bit more force. That said, this one is still effective and gives you more capacity and features overall. Overall, a dependable water flosser that gets the job done and is a good value for the price.
J**E
This great old classic still is essential for dental health - buy it - use it!
In this throwaway society where appliances, especially electronics, are considered obsolete sometimes before the batteries need recharging, it’s amazing to find one product that is still virtually unchanged after over 50 years on the market. It hasn’t needed any upgrades, and is still basically the exact same function and design as it was way back when. I particularly find this gratifying when I just learned, for example, that Apple will be issuing an upgrade on their OS system for their IPhone, which will basically make any of their phones from the 4S and below obsolete, so that, even though yours may work perfectly, technically, you would have to throw it away and spend many hundreds of dollars for a new one! This appliance that has stood the test of time is the WaterPik. I remember my father buying one of the first ones, per his dentist’s recommendation back in the 1960s. In those days there was something about it that seemed almost futuristic. Like something you would see someone using in outer space in a SCI Fi flick. However it’s simple design and function was enormously easy to master, which is a big deal for me back then as little kid! It is also quite uncommon, when it came to devices that supposedly promised some kind of improved health, to find that everything they say about the produce… is true. I remember year after using it, and going from my annual checkup at the dentist, the results were amazing. I stopped using the WaterPik years ago, and just depended on regular brushing and flossing. However now that I’m not such a young kid, even with diligent dental hygiene, you’re gums will begin to do some receding on their own, purely by the evil tyrant known as “aging”. My scores for my gums receding were getting a bit worrisome, in the last few dental checkups, and again my dentist recommended that I should also use a WaterPik. To be honest I was surprised they still made them. I felt, like most everything in the world, these had fallen out of style or favor and we’re no longer used. My dentist however told me they were perhaps one of the best dental hygiene Home Devices ever invented and he was sorry to see that most people didn’t use them anymore. I told him that I flossed religiously, but he told me that the WaterPik gives an extra much needed work-out to the gums keeping them healthy and strong and reducing gum receding. So of course I went right onto Amazon, and found this unit. It was basically the same as I remembered, though they have streamlined the device a bit. 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 level (yes, as “Spinal Tap” guitarist Nigel Tufnel would say: “it goes to eleven!”). The unit is actually a bit quieter than the original with an easier water reservoir system and a coiled hose which makes placement back on its “holster” a lot easier. It also has several holders for each individual pick if more than one of you is using it. Since I’m the only one who uses it, I simply keep the pick itself on the hose unit which fits easily on the hose-holster. Putting it back in its little holder which is situated behind the water reservoir is a little awkward, and frankly if you’re the only one using it there’s no reason to just keep it attached. So on to the punch line. After only six months of use, I went back for my dental checkup, and went through the rating test for gum receding, and found that all my numbers went up 50 to 70%! My dental hygienist, who does the tests, was so excited that she literally ran into the hall to show others, like a proud mother showing off her son’s report card. I feel like a little boy again, and was just a little upset that they no longer give out lollipops as rewards! One thing my dentist and dental hygienist did tell me is that if you use the WaterPik, you should continue to floss, since there are things that the actual floss does between your teeth which a WaterPik cannot. And of course things that the WaterPik can do that flossing doesn’t. So the combination of the two is extremely important. I’m at the age where friends are beginning to tell me about real trouble with their teeth, and how many are getting bridges and implants, and in one case even dentures, since their gums have receded so badly that their original teeth had to be removed (and we’re talking about folks in their late 40’s to early 60’s here, not ancient people). So I cannot stress hard enough how important something like a WaterPik is. And also, how important it is to start this kind of dental hygiene when you are young. For me, especially as you get older, there is nothing more constantly prevalent than when you have bad teeth. I don’t think anything else destroys your quality of life more than trouble with your teeth and the consequences it causes. By the way, after doing a lot of research I have found that Amazon gives the absolute best price for the WaterPik. Of course it arrived within days and like all other products has a great return policy.
L**S
Great flosser, great size and does a great job for such a small unit.
This is a really great water flosser, It is my second order of this brand and it works wonderfully for getting those hard to reach places in the mouth. Leaves a nice, clean sparkling feel and does a good job of it. It is a small unit but I have not discovered any water leakage while using it. It comes with several different tips for different usage, like with braces or orthodontics. I have a small bathroom and it doesn't take up much counter space. This unit is quieter than some brands I have owned in the past and I recommend it,
E**R
A good addition to your arsenal of tools to address gum disease
I am cursed with bad teeth and the dreaded receding gums. My hygienist recommended using the water flosser, and specifically the Pik Pocket tip. Reluctantly, I bought the product and began using it religiously every night. That was about 10 years ago, and I am on my second or third Waterpik. I put half mouthwash and half water in the reservoir and shoot that stuff between my teeth and gums. My anecdotal experience is that this thing works to at least slow, if not stop or reverse, gum recession. Some of my pockets have actually become smaller (e.g., 5 to 4, or 4 to 3). None of them have gotten deeper. This device is easy to use and relatively sturdy. I think using mouthwash might shorten the unit's life, but I'm OK replacing it every few years to avoid progressing gum disease. If your hygienist nags at you about your gum pockets or bleeding gums (um, yes, you just poked me with your pick for an hour), give this a shot. It adds time to the whole nightly dental routine, but it's worth it.
C**N
Make no Mistake - This is a Better Waterpik
Looking 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
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