What Is the Waterpik Ultra Professional Water Flosser?

The waterpik ultra professional water flosser — officially the Aquarius WP-660 — is a countertop oral irrigator built for thorough plaque removal and gum health. It's the most powerful unit in Waterpik's current range, and honestly, after using one for over two years now, I can tell you it earns that reputation.

This isn't some gimmicky gadget. The WP-660 delivers 10 pressure settings ranging from 10 to 100 PSI, comes with 5 specialist tips, and features a 650ml reservoir that gives you roughly 90 seconds of continuous use. That's enough for a full mouth clean without refilling. The unit runs on mains power via a UK 2-pin bathroom socket, so you won't be messing about with batteries dying mid-floss.

I picked mine up after my dentist flagged early gum recession — something the NHS notes affects most adults at some point. Within a fortnight, the bleeding during brushing had stopped. That's not unusual either; Waterpik's own clinical data shows up to 99.9% plaque removal from treated areas.

So what makes it "professional" grade? Mainly the pressure range and tip variety. You get a Classic Jet Tip, an Orthodontic Tip, a Plaque Seeker, a Pik Pocket for periodontal pockets, and a Toothbrush Tip. That covers braces, implants, crowns, and general maintenance — all from one device sitting on your bathroom shelf.

Countertop vs Cordless Waterpik Models: Which Suits You?

The countertop WP-660 isn't your only option. Waterpik's cordless advanced range offers genuine portability, but there are trade-offs you should know about before spending.

The Case for Countertop (WP-660)

Raw power. That's the short answer. With 10 pressure settings and a large reservoir, the Aquarius handles deep cleaning that cordless units simply can't match. If you've got periodontal issues, braces, or implants, this is the one. It sits permanently in your bathroom — plug in, fill up, done.

The downside? It takes up counter space (roughly 15cm x 12cm footprint) and you can't take it travelling without a bulky bag. For my small bathroom off Madrid Street, I had to reorganise a shelf. Worth it, but worth mentioning.

The Case for Cordless

Portability and simplicity. The Waterpik Cordless Advanced (WP-560) weighs around 350g, runs on rechargeable batteries, and fits in a wash bag. You get 3 pressure settings instead of 10, and the reservoir holds about 210ml — enough for roughly 45 seconds before refilling., a favourite among Britain’s tradespeople

Look, if you travel regularly for work (I'm on the road most days doing deliveries across Belfast), a cordless model in the glovebox is brilliant for freshening up. But it won't replace a proper countertop session at home. My mate swears by using both — cordless for travel, WP-660 at home. Honestly, that's the ideal setup if budget allows.

Who Should Choose What?

Got braces or gum disease? WP-660, no question. Healthy gums and you just want maintenance on the go? Cordless is decent. Want both worlds? Budget around £100-£120 total for the pair.

Waterpik Ultra Professional Water Flosser vs Cordless: Full Specs

Here's the direct comparison. Numbers don't lie, and these specs should make your decision straightforward.

The WP-660 wins on every performance metric. The cordless models win on portability and price. That's the trade-off, plain and simple.

UK Pricing and Where to Buy Your Waterpik Ultra Professional Water Flosser

Prices fluctuate, but here's what we've tracked across major UK retailers as of spring 2026. The waterpik ultra professional water flosser typically sits between £65 and £85 depending on promotions.

Amazon at £71.71 is currently the best deal with Prime delivery. That said, if you want it today, Argos click-and-collect is sorted within hours. I grabbed mine from Argos because I'm impatient — paid a few quid more but had it that evening.

It's also worth checking Which? reviews for their latest testing verdicts. They regularly update their oral care recommendations and it's useful for cross-referencing value.

For those weighing up the best water flosser options across brands, we've got a broader comparison covering Philips Sonicare and Oral-B alternatives as well., meeting British quality expectations

How to Use the Waterpik Ultra Professional: Step-by-Step Guide

First time using a water flosser can be... messy. I'll be honest, my bathroom mirror looked like a crime scene the first go. Here's how to avoid that.

Initial Setup (5 minutes)

1. Unbox and assemble. Place the base unit on a flat surface near your bathroom shaver socket (UK 2-pin). The reservoir lifts off for filling.
2. Fill the reservoir with lukewarm water. Cold works but warm is more comfortable on sensitive gums. Don't use mouthwash in the tank — it can damage seals over time.
3. Select your tip. For general use, start with the Classic Jet Tip. Push it into the handle until it clicks.
4. Set pressure to 1 or 2. Seriously. Start low. You can increase over the first week as your gums adapt.

The Flossing Routine (2 minutes)

1. Lean over the sink. Keep your mouth slightly open so water flows out — this prevents the splash-back disaster I mentioned.
2. Place the tip in your mouth before switching on. Aim at the gumline at a 90-degree angle.
3. Work systematically. Start at the back molars on one side, trace along the gumline to the front, then continue to the other side. Do the outer surfaces, then inner.
4. Pause briefly between teeth. The 30-second pacer will buzz to prompt you to move to the next quadrant.
5. Switch off before removing from mouth. Trust me on this one.

The whole process takes about 60-90 seconds once you've got the rhythm. I do it after brushing, before bed. Some people prefer morning — doesn't matter much, consistency is what counts.

Pressure Guide for Different Needs

Settings 1-3: sensitive gums, children, first-time users. Settings 4-7: daily maintenance for healthy gums. Settings 8-10: deep cleaning around braces, bridges, or implants. Even with implants, though, I'd start at 6 and work up. No need to blast your gums into submission.

Maintenance Tips to Keep Your Waterpik Running for Years

These units last 3-5 years with proper care. Here's what I've learned keeping mine in good nick.

Empty the reservoir after each use. Standing water breeds bacteria and can cause mould in the tank. Takes 10 seconds to tip out.

Clean the reservoir weekly. Warm soapy water, quick rinse, done. Once a month, run a solution of white vinegar (half-and-half with water) through the system to descale internal components. This matters especially in hard water areas — and Belfast water isn't the softest.

Replace tips every 3-6 months. The Classic Jet Tip lasts about 6 months; specialist tips like the Plaque Seeker should be swapped every 3 months as bristles wear. Replacement tips run about £5-£8 for a two-pack.

Check the valve and seals annually. If you notice reduced pressure or leaking from the base, the internal valve may need replacing. Waterpik sells replacement parts, and it's a 5-minute job with no tools required., popular across England

The 2-year warranty covers manufacturing defects, but keeping your receipt is essential. UK consumer rights under the Consumer Rights Act 2015 give you additional protections beyond the manufacturer warranty if the product develops faults within a reasonable timeframe.

Key Takeaways

• The waterpik ultra professional water flosser (WP-660) costs £71.71 on Amazon UK — the best current price among major retailers as of June 2026.
• 10 pressure settings (10-100 PSI) and 5 specialist tips make the WP-660 suitable for braces, implants, periodontal pockets, and general maintenance.
• Cordless models offer portability but sacrifice power — maxing at 75 PSI with smaller reservoirs that need refilling mid-clean.
• Start on pressure setting 1-2 for your first week, regardless of gum health. Increase gradually to avoid soreness.
• Replace tips every 3-6 months (£5-£8 per two-pack) and descale monthly with white vinegar solution for longevity.
• Argos click-and-collect is your fastest option for same-day pickup at £74.99; Amazon Prime delivers next day at the lower price.
• The unit requires a UK 2-pin bathroom shaver socket — check you have one before purchasing.