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The Best Water Flossers

Five oral irrigators compared on how well they clean, how easy they are to use, and what they cost.

Last updated Jul 3, 2026

We compared five widely sold water flossers from Waterpik and Philips Sonicare, spanning countertop, cordless, and combination designs. Cleaning power carries the most weight, followed by ease of use, reservoir and battery, and value. Affiliate links help fund this site but never change the ranking or the scores.

  1. 1

    Waterpik Aquarius Professional (WP-660)

    Our pick

    Waterpik's best-selling countertop flosser with a large tank and 10 pressure settings.

    8.6
    / 10

    Pros

    • + Powerful stream with 10 pressure settings suits sensitive to firm preferences
    • + Large reservoir holds enough water for a full mouth without refilling
    • + Built-in timer and pacer help you cover every area

    Cons

    • − Countertop unit takes up space and needs a mains outlet
    • − Not portable, so it stays at home
    • − Reservoir and hose need occasional cleaning to avoid buildup
    From $80.00
    Visit Waterpik Aquarius Professional (WP-660)
  2. 2

    Waterpik Cordless Advanced (WP-580)

    A rechargeable cordless flosser that is waterproof and travel-friendly.

    8.1
    / 10

    Pros

    • + Fully cordless and waterproof, so you can floss in the shower
    • + Rechargeable battery avoids the disposable-battery hassle
    • + Compact enough to pack for travel

    Cons

    • − Smaller reservoir usually needs a refill to finish a full mouth
    • − Three pressure settings versus ten on the countertop models
    • − Slightly less powerful stream than a plugged-in unit
    From $70.00
    Visit Waterpik Cordless Advanced (WP-580)
  3. 3

    Philips Sonicare Cordless Power Flosser 3000

    A cordless flosser with an X-shaped Quad Stream tip and 40-day battery.

    8.1
    / 10

    Pros

    • + X-shaped Quad Stream tip spreads water wider so aiming is more forgiving
    • + Up to around 40 days of use per charge is excellent for a cordless unit
    • + IPX7 waterproof body with two modes and three pressure levels

    Cons

    • − The Quad Stream replacement tips are pricier than standard ones
    • − Onboard tank still needs refilling for a thorough session
    • − Costs more than an equivalent basic cordless flosser
    From $80.00
    Visit Philips Sonicare Cordless Power Flosser 3000
  4. 4

    Waterpik Sonic-Fusion 2.0

    A two-in-one that combines an electric toothbrush and a water flosser in one handle.

    7.6
    / 10

    Pros

    • + Brushes and flosses from one handle, saving counter space and a step
    • + Countertop reservoir and pressure settings match a standalone flosser
    • + Two speeds cover both brushing and flossing needs

    Cons

    • − Easily the most expensive option in this list
    • − The combined brush-and-flosser heads are costly to replace
    • − A do-everything design pleases fewer people than dedicated tools
    From $160.00
    Visit Waterpik Sonic-Fusion 2.0
  5. 5

    Waterpik Cordless Express (WF-02)

    Best value

    A budget battery-powered cordless flosser for occasional and travel use.

    7.7
    / 10

    Pros

    • + Lowest price here and a genuinely portable, lightweight body
    • + Simple two-pressure operation is easy to pick up
    • + Good for travel or trying water flossing before committing

    Cons

    • − Runs on replaceable batteries rather than a rechargeable pack
    • − Small reservoir means refills and shorter sessions
    • − Less powerful and fewer settings than pricier models
    From $40.00
    Visit Waterpik Cordless Express (WF-02)

Side-by-side

The Best Water Flossers — score by criterion for each product.
Product Cleaning Power Ease of Use Value Reservoir & Battery Overall
Waterpik Aquarius Professional (WP-660) 9.2 8.5 7.8 8.8 8.6
Waterpik Cordless Advanced (WP-580) 8.4 8.6 7.6 7.5 8.1
Philips Sonicare Cordless Power Flosser 3000 8.6 8.4 7.0 8.0 8.1
Waterpik Sonic-Fusion 2.0 8.2 8.0 6.2 8.2 7.6
Waterpik Cordless Express (WF-02) 7.4 7.8 8.6 6.5 7.7
How we scored this

Every flosser is scored 0-10 on four weighted criteria: cleaning power (weight 3), ease of use (weight 2), value (weight 2), and reservoir and battery (weight 1). Ranks are editorial and follow directly from those weighted scores; they are independent of any affiliate payout or brand relationship.