Your filter died months ago. It never told you.

Every jug and tap filter on the market has the same design flaw: it gives you no feedback. The carbon saturates silently — and past that point you’re drinking unfiltered water while believing you’re protected. So you either change cartridges too early (money binned) or too late (pointless). That’s blind filtering — and it’s why most filters end up in a drawer.

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The taste creeps back

Chlorine tang after heavy rain, a film on your tea, a kettle furring up again — the only “filter change reminder” you get is your water getting worse.

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The cartridge lottery

“Change every 4 months” — but your water hardness isn’t their average. Heavy tea drinkers saturate a cartridge far sooner. You’re guessing with your money either way.

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Saturated = worse than nothing

A spent carbon block isn’t neutral — it can stop holding what it’s already trapped. Filtering blind means you never know which side of that line you’re on.

Close-up of the PureFlow self-powered display showing filter lifespan and water temperature

A filter without a screen is a smoke alarm without a light

You wouldn’t trust a smoke alarm with no indicator — you’d find out it was dead on the day it mattered. Yet that’s exactly how every water filter you’ve ever owned works.

PureFlow puts the missing light on the front: a live display showing filter life from 100% down to 0%, plus your water temperature. You change the cartridge exactly when it needs changing — not when the packet guesses, not when the tea tastes wrong again.

Tap on, screen on. That’s the whole promise.

The Self-Powered Smart Core — the water does the work

A micro-turbine inside turns your own water flow into electricity. That one idea unlocks everything the category couldn’t do: a live screen and a UV stage, with no battery to die and no plug by the sink. Tap off, it sleeps. Tap on, it’s working — and showing you.

Turbine powers the screen

Filter life % and temperature, live, powered by the flow itself. Nothing to charge, nothing to replace, ever — the display physically can’t run out of battery.

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Activated carbon does the taste

The proven stage: helps reduce chlorine taste & odour, limescale build-up and microplastics — the things that ruin tea and fur up kettles in hard-water Britain.

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UV — the treatment-works stage

Water companies have used UV treatment for decades — it needed mains power, so it never reached your tap. The turbine changes that. Same principle, now at the point you actually drink.

PureFlow purifier filling a glass of filtered water in a UK kitchen

Still lugging bottled water? It’s not the refuge you think

A 2024 study in PNAS found roughly 240,000 plastic particles per litre in bottled water — several times more nanoplastics than treated tap water. Add £300+ a year, the boot-load carry, and the recycling guilt.

Filtered tap flips the whole equation: better-tasting water on demand, a cartridge instead of a bin bag of bottles, and — with PureFlow — a screen that tells you it’s actually still doing its job.

One month of bottled water costs about half a PureFlow. Then the bottles keep costing you.

Will it fit your tap?

The #1 reason on-tap filters get returned is “doesn’t fit my tap.” So here’s the straight answer before you buy: 6 adapters are included, covering 99% of standard round-spout taps — and some taps genuinely won’t work.

Your tapHow to tellFits
Round spout, removable aeratorThe standard UK mixer — the metal mesh tip unscrewsmost kitchen taps
Male or female thread, 22–24 mmAny thread once the aerator is offcovered by the 6 adapters
Pull-out / spray-head tapThe head lifts out on a hoseno fixed spout to mount on
Sensor or square designer spoutTouch-free taps and non-round spoutsno thread to grip

Not sure? Unscrew your aerator and message us a photo — we’ll tell you straight. And if it doesn’t fit when it arrives: full refund, 30 days, no quibble.

Hand-tightening PureFlow onto a kitchen tap with the six included adapters

Fitted in 5 minutes. No plumber, no tools.

Unscrew your tap’s aerator, pick the matching adapter from the six in the box, and hand-tighten PureFlow on. Run the water for two minutes to prime the cartridge — done. The screen lights up with the flow, already counting.

One lever gives you purified water for drinking and cooking, and full-flow unfiltered for washing up — so your cartridge works only when it should, and lasts as long as it can.

If anything leaks or won’t fit, that’s what the 30-day guarantee and the 2-year warranty are for.

What it does — and what it honestly doesn’t

UK tap water is regulated drinking water — we won’t pretend otherwise. PureFlow is about the last 5%: the taste, the limescale, the traces, and knowing your filter is actually working. Straight answers:

✅ What it does

  • Shows you it’s working — live filter life % and temperature, self-powered
  • Helps reduce chlorine taste & odour — the thing that ruins tea
  • Helps reduce limescale build-up — kinder to kettles in hard-water areas
  • Helps reduce microplastics and common trace impurities via activated carbon
  • Adds a UV stage — the same type of treatment used by water works
  • Full-flow bypass lever for washing up — preserves the cartridge

❌ What it doesn’t

  • It’s not a medical device and doesn’t make unsafe water safe — it improves regulated tap water, it doesn’t replace it
  • No magic “X thousand litres” claim — cartridge life depends on your water; that’s exactly why the screen exists
  • Purified flow is gentler than full flow — that’s the trade for proper contact time (the lever gives full pressure any time)
  • Cold, municipal tap water only — not for hot taps or private wells
  • Won’t fit pull-out, spray or sensor taps

The temperature display is comfort info, not a lab instrument. And if PureFlow isn’t right for your kitchen, send it back within 30 days for a full refund — that part isn’t small print.

£39.90 once — against what you’re already spending

Run the numbers most listings hope you won’t.

Bottled water for a household, per year£300+
Brita On Tap system + cartridges, first year~£75
FlowPure multi-stage, first year~£79
PureFlow™ — screen, turbine, carbon + UV, 6 adapters£34.99

And because the screen runs every cartridge to its real end — not the packet’s guess — you stop binning half-used cartridges. That’s the quiet saving nobody advertises. 2-year warranty, 30-day money-back either way.

30K+ Happy Customers
Excellent 4.9

They tried PureFlow™
They loved it

Tea finally tastes like tea, not the kettle. And the little screen takes all the guesswork out of changing the cartridge.

✔ Verified
Helen

Fitted our mixer tap in minutes with the adapters in the box. No plumber, no leaks.

✔ Verified
Omar

The screen powers itself from the water flow - no batteries, no charging. I still find that clever every time.

✔ Verified
Jackie

We stopped buying bottled water in the first week. It has already paid for itself.

✔ Verified
Simon

Kettle limescale has visibly slowed down. The screen telling me exactly when to swap the filter is the feature I didn't know I needed.

✔ Verified
Dawn

Frequently Asked Questions

Will it fit my tap?

6 adapters are included, covering 99% of standard round-spout taps (the kind where the little mesh aerator unscrews). It won’t fit pull-out, spray-head or sensor taps — we’d rather say so here. Not sure? Message us a photo of your tap and we’ll answer straight. If it doesn’t fit on arrival: full refund, 30 days.

How does the screen work without batteries or a plug?

A micro-turbine inside spins with your water flow and generates the electricity itself — enough to power the display and the UV stage. Tap off, it sleeps; tap on, it’s live. There is genuinely no battery to change and no cable near your sink, ever.

What does it actually filter?

The activated-carbon cartridge helps reduce chlorine taste & odour, limescale build-up and microplastics — the everyday hard-water complaints. The UV stage adds the same type of treatment water works use. To be straight with you: it improves regulated UK tap water — it’s not a medical device, and it doesn’t claim to make unsafe water safe.

How long does a cartridge last?

Honest answer: it depends on your water hardness and how much you drink — which is exactly why PureFlow has a screen instead of a printed guess. The display counts filter life from 100% to 0%; when it’s low, swap the cartridge and press Reset. Most households land in the 2–3 month range.

Does it slow the water down?

Purified flow is gentler than full mains pressure — that contact time is what makes the filtering real. For everything that doesn’t need filtering (washing up, rinsing), flick the lever and you have full unfiltered flow instantly. That lever is also what makes each cartridge last.

What if it leaks, breaks, or I just don’t like it?

30-day “Love Your Water” money-back guarantee for any reason, plus a 2-year warranty on the unit (RoHS & CE certified). Leaks are almost always a wrong adapter or missing seal — message us a photo and we’ll sort it same day.

Didn't find your answer?

Ask us anything — whether it fits your tap, what it filters, how the turbine works. We’ll give you a straight answer, including when the honest answer is that PureFlow isn’t right for your kitchen.