Water flossers · Best overall

Waterpik Aquarius WP-660

87
Highly rated
Average of 6 professional reviews
6 of 6 recommend it · broad agreement
Where the 6 reviews landedRange 83–100
Score printed by the outlet Estimated from the verdict

Exact average 87.2 · 1 printed, 5 estimated

Waterpik Aquarius WP-660Image: Waterpik

6 professional reviewers tested the Waterpik Aquarius WP-660, and 6 recommend it. Most praised: attachments and ease of use. Most common complaint: price.

Reviewed by Electric Teeth, Reviewed, The Strategist and 3 more

The catch: Large unit that takes up counter space.

5 of these 6 outlets print no score. We estimated theirs from the review text, then adjusted the estimates against the ratings outlets actually print (ours ran slightly low). An estimate is never higher than 92.

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What 6 critics said

Highest score first · all converted to 0–100
  1. 100
    Electric TeethHands-on review · 2024

    Electric Teeth names it the best countertop water flosser, with all the essentials, plentiful tips and ten pressure settings.

    Read Electric Teeth review
  2. 89est.
    ReviewedNo printed score · Hands-on review · 2018

    The writer, who has gum disease, found this water flosser compact, easy to use and effective, with useful tips and a timer, and cites a periodontist's endorsement.

    Read Reviewed review
  3. 85est.
    The StrategistNo printed score · Buying guide · 2026

    The writer tested it and calls it the clear best overall, backed by six dentists.

    Read The Strategist review
  4. 83est.
    SlashGearNo printed score · Hands-on review · 2026

    One of ten bathroom gadgets the writer's family uses, praised for clearing stubborn food.

    Read SlashGear review
  5. 83est.
    Good HousekeepingNo printed score · Buying guide

    Named best for tip variety after lab and consumer-panel testing, with one tester saying it felt like a professional cleaning.

    Read Good Housekeeping review
  6. 83est.
    CNETNo printed score · Buying guide · 2026

    Tested in a roundup of ten flossers, the Aquarius is named the best choice for braces wearers.

    Read CNET review

"Est." means the outlet printed no score, so we estimated one from its verdict and checked our estimates against ratings outlets print. How we check estimates

What critics praise most

Attachments6 of 6
Ease of use2 of 6

What critics dislike most

Price2 of 6

Compare the Waterpik Aquarius WP-660 with another product →

Also reviewed, not yet scored

Common questions

Is the Waterpik Aquarius WP-660 worth it?

Most critics think so: 6 of 6 recommend it. Large unit that takes up counter space.

Do critics agree about the Waterpik Aquarius WP-660?

Broad agreement: scores range from 83 (SlashGear) to 100 (Electric Teeth), a spread of 17 points across 6 reviews. Most reviewers land fairly close together.

What do critics dislike about the Waterpik Aquarius WP-660?

Price (2 of 6 reviews).