Waterpik Aquarius Water Flosser WP-660 review: what the official page claims, checked against the evidence
The problem Waterpik Aquarius Water Flosser WP-660 is meant to help with
A lot of people struggle to clean between their teeth and along the gumline. String floss can be awkward, especially around back teeth, braces, bridges, crowns, or implants.
When those areas are hard to reach, plaque bacteria can build up. That can go along with bleeding gums, bad breath, and gums that do not feel as healthy as they should.
The Waterpik Aquarius Water Flosser WP-660 is sold as a countertop water flosser for those kinds of dental care needs. Below, we explain what the official page promises and what we could confirm from the page itself.
Summary
The Waterpik Aquarius Water Flosser WP-660 is a corded countertop water flosser with 10 pressure settings, 2 flossing modes, 7 included tips, and a 90+ second reservoir capacity, according to the official page. The page clearly backs its listed specifications, North America power compatibility, and a three-year limited warranty. It also says the product is accepted by the American Dental Association for safety and effectiveness. Claims about plaque removal and being more effective than string floss are seller claims on the page, not independent evidence we could verify here.
Opens the seller’s website. Check the current price and refund terms there.
At a glance
- What it is
- A corded countertop water flosser for oral care
- How it is used
- Used for water flossing with a rotating tip handle, 10 pressure settings, and 2 modes
- Main features or ingredients named
- 7 flossing tips, 360-degree rotating tip handle, 1-minute timer with 30-second pacer, 90+ seconds reservoir, Floss mode, Hydro-Pulse Massage mode
- Guarantee or warranty
- Three-year limited warranty, see Owners Manual for details
- Payment or price
- Check Amazon or the official Waterpik site for current price and purchase terms
- Where it is sold
- Amazon and the official Waterpik site
- Power
- Compatible with 120VAC/60Hz outlets, for use in North America only
- Our method
- Document research. We have not used Waterpik Aquarius Water Flosser WP-660 ourselves.
The claims, checked
Each claim below is quoted from the official page. See what each result means.
| What the seller says | What we checked | Result |
|---|---|---|
| “7 flossing tips” | We checked the product features and accessories list on the official page. The page lists 4 Precision Tips, 1 Orthodontic Tip, 1 Pik Pocket Tip, and 1 Plaque Seeker Tip, totaling 7. | Confirmed |
| “Reservoir capacity of 90+ seconds” | We checked the specifications table on the official page. It lists Capacity in Seconds as 90 and also states 90+ seconds in the features section. | Confirmed |
| “Compatible with 120VAC/60Hz outlets, for use In North America only” | We checked the power section of the specifications on the official page. It states North America only; 120VAC/60Hz. | Confirmed |
| “Three-year limited warranty, see Owners Manual for details” | We checked the product features and warranty section on the official page. It lists a three-year limited warranty and 36 months coverage, with details in the Owners Manual. | Confirmed |
| “Removes up to 99.9% of plaque bacteria from treated areas” | We looked for independent evidence on the official page and for the footnote tied to this statement. The page says *Laboratory study, data on file, but it does not provide the full study details here. | Not verified |
| “clinically proven up to 2X as effective as string floss” | We looked for the clinical study details on the official page, including what was compared against what and under which conditions. The page states the comparison to string floss, but does not provide the full independent evidence here. | Not verified |
| “accepted by the American Dental Association (ADA) for safety and effectiveness” | We checked that this statement appears on the official page. The page says the Aquarius water flosser is accepted by the ADA, but it does not show the acceptance document on this page. | Not verified |
See the full offer, guarantee and prices on the seller’s website.
What Waterpik Aquarius Water Flosser WP-660 is
The Waterpik Aquarius Water Flosser WP-660 is a countertop, corded electric water flosser. According to the official page, it is designed for use with 120VAC/60Hz outlets in North America only.
The page describes it as a compact professional model with Waterpik PrecisionPulse technology, 2 flossing modes, and a one-minute timer with a 30-second pacer. It also says the tip handle rotates 360 degrees to help reach the whole mouth, including back teeth.
Main features
This product is a device, so there are no ingredients to list. The official page focuses on hardware features, settings, and the included tips.
- 7 flossing tips included
- 360-degree rotating tip handle
- Advanced pressure control system with 10 settings
- Reservoir capacity of 90+ seconds
- On/Off water control on handle
- 2 flossing modes: Floss and Hydro-Pulse Massage
- 1-minute timer with 30-second pacer
- LED information panel
- Flow rate per minute: 13 ounces (384 ml)
- Pulses per minute: 1400
What the evidence actually is
The official page makes several benefit claims. These include removing up to 99.9% of plaque bacteria from treated areas, being up to 2X as effective as string floss for removing bacterial plaque and improving gum health, being up to 2X as effective around implants with the Plaque Seeker tip, and up to 3X as effective around braces with the Orthodontic tip.
On the page, the plaque-bacteria statement is tied to this note: Laboratory study, data on file. The page does not provide the full study report, methods, or results there.
The page also says the product is accepted by the American Dental Association for safety and effectiveness. That is a meaningful seller statement, but this page does not include the acceptance document itself. So the listed product specs are easy to confirm from the page, while the performance claims are not independently verified here.
Buying, shipping and refunds
Because this product is sold through Amazon, current price and buying terms should be checked on Amazon. The official Waterpik site also lists the product page.
The official page states a three-year limited warranty and says to see the Owners Manual for details. We did not find a separate money-back guarantee on the provided page text.
For upkeep, the FAQ says to clean the water flosser monthly and replace tips every 3 to 6 months.
Who might consider it, and who should not start here
This product may fit adults who want a countertop water flosser with multiple tips, pressure settings, and a built-in timer. According to the official page, it may be especially relevant for people with braces, implants, crowns, bridges, or veneers.
This should not be the first stop for someone with severe mouth pain, major bleeding, swelling, or a loose dental appliance. In those cases, a dentist or other qualified professional is a better place to start.
See a doctor or qualified professional first if you notice
- Gums that bleed often or heavily
- Mouth pain, swelling, or signs of infection
- Loose teeth or sudden changes in your bite
- Problems around braces, implants, crowns, or bridges
- Bad breath or gum irritation that does not improve
Our take
Based on the official page, this looks like a fully specified water flosser with useful convenience features and a stated 3-year limited warranty. The hardest claims to check are the performance claims, because the page does not provide full independent evidence here. The most practical next step is to compare its features, included tips, and warranty with other water flossers before buying on Amazon or the official site.
Opens the seller’s website. ClearPick is independent and not affiliated with the seller. Check the current price and refund terms there before buying.
Questions
Is Waterpik Aquarius Water Flosser WP-660 legit?
It is a real product with a detailed official product page, listed specifications, and a stated three-year limited warranty. That said, benefit claims on the page are still seller claims unless you review the underlying evidence yourself.
Does Waterpik Aquarius Water Flosser WP-660 really remove plaque better than string floss?
According to the official page, it is clinically proven up to 2X as effective as string floss for removing bacterial plaque and improving gum health. In this review, that claim is unverified because the page does not provide the full independent evidence here.
How is Waterpik Aquarius Water Flosser WP-660 used?
According to the official page, it uses a rotating tip handle, 10 pressure settings, and 2 modes called Floss and Hydro-Pulse Massage. It also has a one-minute timer with a 30-second pacer.
Where can you buy Waterpik Aquarius Water Flosser WP-660?
You can check Amazon and the official Waterpik site for current buying options.
What is the warranty for Waterpik Aquarius Water Flosser WP-660?
The official page states a three-year limited warranty and says to see the Owners Manual for details.
Did ClearPick test Waterpik Aquarius Water Flosser WP-660?
No. This review is based on document research of the official page. We have not used Waterpik Aquarius Water Flosser WP-660 ourselves.
Sources
- Waterpik Aquarius Water Flosser WP-660 official website. https://waterpik.com/products/dental-water-flosser/WP-660. Checked September 30, 2026.
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