What's really in your tap water?

Your tap water is legal. But is it below the health thresholds? Our free reports compare the official tests of each water network with health thresholds.

Not available in your country yet

Our reports cover the United Kingdom, the United States, France, Germany and Australia.

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Everything about your water, on one page

Built from your network's official analyses. No jargon: every substance is named, explained and compared with its health threshold.

  • A score out of 100

    Your water's score today, and with a Puure® filter, graded from A to E.

  • Contaminants, ranked

    Every substance above the health threshold, with its measured value and how many times over it is.

  • Limescale and comfort

    How hard your water is, chlorine levels, and what it means for your skin, hair and appliances.

  • Your network, compared

    How your water ranks against other networks, and what simply isn't measured where you live.

Legal doesn't mean risk-free

Tap water must respect legal limits, and in almost every case it does. But many of these limits are a compromise between health, cost and what can be measured. Health thresholds, published by independent bodies, set the level considered safe when you drink the water every day for a lifetime.

  • A network can be 100% compliant and still have several substances above the health threshold.
  • Each substance is assessed on its own: no limit covers the combined effect of low doses.
  • Some emerging contaminants, such as many PFAS, are only just starting to be regulated.

Example: arsenic

Legal limitSame in the UK, EU, US and Australia
10 µg/l
Health thresholdCalifornia OEHHA public health goal
0.004 µg/l

2,500× stricter than the legal limit

Your report shows both: what's legal, and what exceeds the health threshold.

Dozens of parameters, sorted into clear families

Your report covers everything your water supplier publishes. What isn't measured on your network is clearly flagged, never guessed.

  • Pesticides

    Herbicides, fungicides and their breakdown products.

  • Heavy metals

    Lead, arsenic, nickel, antimony and more.

  • Chlorination by-products

    Trihalomethanes, chlorate, bromate.

  • Disinfectant

    Free chlorine and chloramines: taste, smell, dry skin.

  • PFAS

    "Forever chemicals", when they are tested on your network.

  • Nitrates

    Mostly from farming, closely watched for infants.

  • Limescale

    Water hardness and its effect at home.

  • Bacteria

    E. coli, enterococci, coliforms.

Your report in three steps

  1. Enter your postcode and email

    That's all we need. No account, no payment.

  2. We analyse your network

    We find the network that supplies your address and compare its latest official results with health thresholds.

  3. Your report lands in your inbox

    A clear, personal report within minutes, with practical advice for your water.

Lab technician fitting a Puure® filter to a tap for testing

Filtration tested by an independent lab

Your report shows what a Puure® filter removes from your water, using removal rates measured by an ISO/IEC 17025 accredited lab. Never estimates.

  • 200+ contaminants reduced: PFAS, chlorine, microplastics, pesticides, heavy metals.
  • Useful minerals kept: multi-barrier filtration, no reverse osmosis.
  • NSF/ANSI 42 certified cartridge, lead-free, REACH compliant.
  • Fits 99% of taps in 30 seconds, no tools needed.
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Frequently asked questions

Is the report really free?

Yes. No payment and no account. We only ask for your email address so we can send you the report.

Is my tap water dangerous?

In almost every case, no: it meets every legal limit. The health threshold is stricter: it's the level considered risk-free when you drink the water for a lifetime. Being above it is not an immediate danger, but a risk that builds up over the years.

What if there's no data for my exact postcode?

We use the nearest measured network and say so clearly in your report, with its name and distance. Trends are reliable; exact values at your tap may differ.

How is the score calculated?

Each substance is compared with its health threshold: the further above, the more points are lost. The score out of 100 is graded A to E. The "With Puure®" score only uses removal rates measured in an accredited lab.

What do you do with my email address?

We use it to send your report, then a few tips about your water. You can unsubscribe in one click. We never sell your data.

Health thresholds
EWG health guidelines, California OEHHA public health goals, US HHS, and EU Directive 2020/2184.
Puure® tests
Removal rates measured by Measurlabs, an ISO/IEC 17025 accredited laboratory.