Waterpik Aquarius WP-660
The Waterpik Aquarius Water Flosser is a highly effective tool for enhancing oral hygiene, offering superior cleaning performance and ADA acceptance. It may be noisier and bulkier than desired, and users should ensure proper maintenance to avoid leaking or mold issues. If you prefer a more portable option, consider the Waterpik Cordless Advanced 2.0 Water Flosser that still delivers a powerful clean with a more compact design.
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
D Dentist.net | $0.99 | Jan 18, 2025, may have changed | Buy Now |
M My Store | $14.59 | May 11, 2025, may have changed | Buy Now |
M My Store | $14.59 | Oct 1, 2026 | Buy Now |
M My Store | $14.59 | May 11, 2025, may have changed | Buy Now |
M My Store | $14.59 | May 11, 2025, may have changed | Buy Now |
Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026 to May 2026). Some products and categories have different terms, so check with the store before you buy.
Used & Refurbished
✨ See 7 used & refurbished prices with ShopSavvy ProGet the app →Price history summary
Lowest new price we recorded at major retailers (Amazon, Walmart, Best Buy, Target, The Home Depot and Lowes) in the last 90 days: $59.99 at Amazon on Sep 27, 2026.
Range over the last 12 months: $49.99 (retailers/amazon, Jun 23, 2026) to $99.99 (retailers/amazon, Jul 24, 2026). Based on 112 recorded prices since Nov 20, 2025 for offers sold by these retailers themselves (not marketplace sellers). Summary as of Oct 14, 2026.
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Pros
- •Provides strong and customizable water pressure with 10 settings for an effective and thorough clean.
- •Impressively improves gum health and removes up to 99.9% of plaque, delivering results that users and dentists notice quickly.
- •User-friendly features such as a one-minute timer with 30-second pacer and a convenient on/off button enhance ease of use.
- •Includes 7 different flossing tips to cater to various dental needs, including braces and multiple users.
- •The 360-degree rotating tip handle reaches all areas of the mouth comfortably, even back teeth.
- •The design feels more compact and lighter compared to older models, fitting better on bathroom countertops and in cabinets.
- •The water reservoir is easy to fill and detach, with improved leak resistance and a drip-free design.
- •Durable construction holds up well under frequent use and cleaning is straightforward.
- •Leaves teeth feeling noticeably cleaner by effectively removing food particles and plaque.
- •ADA accepted and recommended by dental professionals for superior oral care.
Cons
- •Operates at a noisy level that some users find distracting compared to handheld or cordless alternatives.
- •Bulky overall design may feel cumbersome in smaller bathrooms or tight spaces.
- •Occasional leaking from the water reservoir reported, requiring careful maintenance and drying to prevent mold buildup.
- •Plastic tubing can break after extended use and replacing it is inconvenient, sometimes making replacement units more practical.
- •Storage for the included mouth tips is awkward and unhygienic, often requiring removal of the water tank to access them.
- •Sharing the device between users can be tricky due to the design of the mouth piece switching mechanism.
- •The water control button on the handheld piece can be hard to operate quickly and may be confused with the tip release button.
- •Some users feel the product’s design and functionality could be improved despite solid cleaning performance.
Bottom Line
The Waterpik Aquarius WP-660 is a powerhouse for at-home oral care—delivering excellent plaque removal, gum health improvement, and customizable pressure settings, all backed by ADA acceptance. While it is a bit noisy and bulky, and requires some care to avoid leaks or mold, it's generally a durable and reliable device that many users call their best Waterpik yet. If you want similar performance but crave quieter operation or more portability, check out the Waterpik Cordless Advanced 2.0 Water Flosser—still powerful but with a sleeker, more compact design.
What Reviewers Are Saying
Customer Ratings
Based on 141,110 reviews from Amazon
Professional Reviews
Common Questions
Is the Waterpik Aquarius WP-660 easy to travel with?Published 2 years ago
If you're thinking about traveling with the Waterpik Aquarius WP-660, there are some things you'll want to keep in mind. Based on what we've found from our research and the manufacturer's details, thi...
Read full answerHow many pressure settings does the Waterpik Aquarius WP-660 have?Published 2 years ago
The Waterpik Aquarius WP-660 has 10 pressure settings, so you've got quite a bit of flexibility for your water flossing. The manufacturer describes these settings as a way to adjust the water pressure...
Read full answerDoes the Waterpik Aquarius WP-660 develop mold issues?Published 2 years ago
Hey! So, you're curious about whether the Waterpik Aquarius WP-660 has mold issues. Based on what we've found, mold isn't typically flagged as a big concern with this model. Of course, since it involv...
Read full answerHow long does the water reservoir last on the Waterpik Aquarius WP-660?Published 2 years ago
The Waterpik Aquarius WP-660 has a water reservoir that usually lasts around 90 seconds when you're flossing, depending on the pressure setting you choose. The manufacturer mentions that the reservoir...
Read full answerHow loud is the Waterpik Aquarius WP-660 water flosser?Published 2 years ago
Wondering about the noise level of the Waterpik Aquarius WP-660 water flosser? It's a valid concern because no one wants a loud disruption during their oral hygiene routine. Here's what we found out: ...
Read full answer📚More About Waterpik Aquarius WP-660
Discussion
ShopSavvy compares prices across thousands of retailers so you always get the best deal. Prices are collected from retailer listings, and each one shows the date we last saw it. Our expert reviews and community discussion help you make informed buying decisions.