Black Aquarius Water Flosser WP-662 Review: Style Meets Function
By Waterpik™ Oral Health - Water Flossers, Electric Toothbrushes | Published: 2026-08-02
Category: Product Reviews
Explore the Black Aquarius Water Flosser WP-662 in our detailed review. Discover its features, pros, cons, and how it compares to other Waterpik models.
When it comes to oral hygiene, a water flosser can be a game-changer, and the Waterpik Aquarius series has long been a favorite among dental professionals and home users alike. The Black Aquarius Water Flosser WP-662 brings a sleek, modern aesthetic to this proven technology, making it a stylish addition to any bathroom counter. In this review, we'll dive deep into the WP-662's design, performance, and overall value, helping you decide if this is the right water flosser for your needs.
We'll cover everything from its key features and ease of use to its pros and cons, and we'll also compare it to other popular Waterpik models so you can make an informed choice. Whether you're new to water flossing or looking to upgrade your current device, this review will give you the insights you need.
Design and Build Quality
The Black Aquarius Water Flosser WP-662 immediately stands out with its all-black finish, which is both elegant and practical—it hides water spots and fingerprints better than lighter colors. The unit has a solid, sturdy feel, with a stable base that won't tip over during use. The reservoir is generously sized at 22 ounces, meaning you can floss for over 90 seconds without needing a refill, which is perfect for a thorough clean.
The control panel is intuitive, featuring a large on/off switch and a pressure dial with 10 settings, ranging from gentle to high pressure. The handle is ergonomically designed, and the 3-foot hose provides ample reach. The included tips are color-coded for easy identification, and the tip storage compartment on the unit keeps everything organized. Overall, the design is both functional and attractive, making it a great fit for modern bathrooms.
- 22-ounce reservoir for extended flossing sessions
- 10 adjustable pressure settings for personalized comfort
- Color-coded tips and built-in tip storage for convenience
Performance and Cleaning Effectiveness
When it comes to performance, the WP-662 delivers the reliable, effective cleaning that Waterpik is known for. The pulsating water stream removes plaque and food particles from between teeth and below the gumline, significantly improving gum health. In clinical studies, Waterpik water flossers have been shown to be up to 29% more effective at removing plaque than string floss, and the WP-662 is no exception.
The 10 pressure settings allow you to customize the intensity, making it suitable for users with sensitive gums or those who prefer a more vigorous clean. The motor is quiet, and the unit operates smoothly without vibration. The 360-degree rotating tip lets you reach all areas of your mouth with ease, and the on/off switch on the handle gives you control over the water flow. Whether you're targeting specific problem areas or just maintaining your daily routine, the WP-662 performs admirably.
- Pulsating water stream for deep cleaning between teeth and along the gumline
- 10 pressure settings to suit all comfort levels
- 360-degree rotating tip for complete mouth coverage
Ease of Use and Maintenance
Using the Black Aquarius is straightforward. Simply fill the reservoir with warm water, select your pressure setting, and lean over the sink while guiding the tip along your gumline. The unit comes with a convenient pause button on the handle, so you can stop the flow without turning off the motor. Cleaning the device is also simple—the reservoir is removable and dishwasher-safe, and the tips can be soaked in a vinegar solution to remove mineral deposits.
Maintenance is minimal but important for longevity. Waterpik recommends cleaning the unit every 1-3 months, depending on your water hardness. The WP-662 includes a 3-year warranty, giving you peace of mind. Compared to other models like the Classic Blue Aquarius Water Flosser – Blue (WP-663), the WP-662 offers the same core features but with a more modern color option. If you prefer a more traditional look, the WP-663 is also a great choice, but the black finish of the WP-662 is undoubtedly a standout.

- Removable, dishwasher-safe reservoir for easy cleaning
- Pause button on the handle for convenient control
- Includes 3-year warranty for peace of mind
Pros and Cons
Like any product, the WP-662 has its strengths and potential drawbacks. Understanding these can help you decide if it's the right fit for your oral care routine. Below, we break down the key pros and cons based on our hands-on experience and user feedback.
One of the biggest advantages is its effectiveness—water flossing is proven to improve gum health, and the WP-662 does this efficiently. The adjustable pressure settings make it versatile for all users, and the sleek black design is a bonus. On the downside, the unit is countertop-sized, so it takes up space, and it requires access to a power outlet. Some users may also find the initial learning curve a bit steep, but most get the hang of it within a few uses.
- Pros: Excellent cleaning performance, customizable pressure, stylish design, durable build
- Cons: Requires counter space and power outlet, not portable, slightly higher price point than basic models
Comparison with Other Waterpik Models
To help you see where the WP-662 stands in the Waterpik lineup, we've compared it with a few other popular models. The Classic Blue Aquarius Water Flosser – Blue (WP-663) is essentially the same unit in a different color, so if you prefer blue over black, that might be your pick. The Modern Gray Aquarius Water Flosser – Gray (WP-667) offers another color option with similar features.

If you're looking for a more portable solution, the White Cordless Plus 5000 Water Flosser – White (WF-26W010) is a cordless option that's great for travel. However, it has a smaller reservoir and fewer pressure settings. For a budget-friendly countertop option, the White Ultra Water Flosser – White (WF-100) is a solid choice, but it lacks the advanced features of the Aquarius series. Ultimately, the WP-662 strikes a great balance between performance, features, and aesthetics.
- WP-662 vs WP-663: Same features, different color (black vs blue)
- WP-662 vs WF-26W010: Countertop vs cordless, larger reservoir vs portability
- WP-662 vs WF-100: More pressure settings and design vs budget-friendly
In conclusion, the Black Aquarius Water Flosser WP-662 is a top-tier water flosser that combines effective cleaning with a sleek, modern design. Its adjustable pressure settings, ease of use, and durable build make it a worthwhile investment for anyone serious about their oral health. If you're ready to elevate your daily routine, consider adding the Black Aquarius to your bathroom—you won't be disappointed.



