Understand what's in your drinking water, and what to do next.
A clear, calm, UK-focused way to screen, interpret, and act on your home water, starting with our Complete Drinking Water Test Kit.
Find the right water test Shop complete kit Fast UK delivery Step-by-step guidance Result interpretation UK-focused testing Screens for 5 UK checks Lead E. coli Arsenic Chlorine Fluoride Near you Local results map View map →Where to start
Choose your starting point
Five common situations. Pick the one that fits and we'll route you to the right test, the right guidance, or both.
Most commonI'm not sure what to test
Start with a broad first-line screen covering the main UK concerns.
Compare kitsI have a private supply
Wells, boreholes and springs need a different approach to mains water.
See guidanceI'm worried about lead
Older homes and pipework are the most common sources in the UK.
Lead testingUnusual taste or smell
Chlorine, metallic, earthy or cloudy water. Narrow it down.
Understand itWhat's tested near me?
See community results and patterns in your local area.
Open the mapHow it works
Screen, understand, act without the guesswork
Home water testing only helps if you know what to do with the result. SustainWater is built around a simple three-step decision loop.
01Screen
Use a home test kit to check the contaminants that matter for your situation.
- Quick first-line screen at your tap
- UK-relevant contaminants only
- Practical home screening without waiting
Understand
Read your result with clear context. What's normal in the UK, and what's worth a second look.
- Plain-English interpretation
- UK regulatory thresholds
- What variation actually means
Act
Decide your next step: retest, monitor, contact your supplier, or confirm with a lab.
- Retest or monitor over time
- Escalate to your water company
- Lab confirmation when needed
Test paths
Three ways to start testing
Most households start with the Complete Kit. If you already know what you're looking for, single tests and bundles cover targeted concerns.
Fig. 01 · Complete Kit Most popularComplete Drinking Water Test Kit
A broad first-line screen for the five key household drinking-water checks, designed to give you a clear starting point.
LeadE. coli & coliformArsenicChlorineFluoride From£55£45 View kit Single testsSingle Water Tests
For when you already know what you're looking for. Lead, bacteria, arsenic, chlorine or fluoride, one at a time.
From£14.95£12.45Shop single tests → Multi-test bundleMulti-Test Kits
Focused bundles when more than one concern is on your mind, without paying for the full screen.
From£25£22.50Compare bundles →On a private supply (well, borehole or spring)? Start with our private supply guidance. The right test depends on your source.
UK water testing map
See what's been tested near you
Browse community screening results across the UK by postcode and contaminant. Spot patterns in your area, learn what neighbours are testing for, use our custom map overlays for postcode level analysis, and add your own results to the map.
12Community results 2,319Postcode districts with housing age 2Overlays: fluoride and hardnessLast updated 27 Sep 2026
Explore the map Upload a result Community screening results for local context only. Not official monitoring data and not a substitute for regulated testing. Enter your postcode LeadE. coliArsenicAll 12Community results updated 27 Sep 2026 Within range Worth a second lookBe clear about it
What a home water test can (and can't) tell you
We're not here to alarm you. We're here to help you screen with confidence and know when something needs more than a home kit.
Useful for
- Quick first-line screening at the tap
- Deciding what's worth investigating further
- Checking a single known concern
- Before-and-after comparisons
- Practical peace of mind
When to escalate
- Persistent taste, smell or appearance changes
- Concerning or repeated unusual results
- Private supply concerns (well, borehole, spring)
- Illness or urgent safety questions
- When official confirmation is needed
Our mission
Calm, factual UK water clarity.
SustainWater exists to make home water testing genuinely useful, not a source of fear. We screen for the contaminants that actually matter in UK households, explain what your result means in plain English, and tell you what to do about it.
"We don't sell fear. We help you screen, understand, and decide what to do next."Every test route is supported by clear instructions, interpretation guidance and next-step pages.
What we test for
UK drinking-water concerns we cover
Lead
Older homes, lead pipework and historic fittings.
Learn →Test →E. coli & coliform
Bacterial indicators of contamination.
Learn →Test →Arsenic
Geology-driven, in some UK regions.
Learn →Test →Chlorine
Mains water disinfectant, taste and levels.
Learn →Test →Fluoride
Naturally present and sometimes added.
Learn →Test →Taste & smell
Metallic, earthy, chemical or cloudy water.
Learn →Test →Result interpretation centre
Testing is only useful if you know what the result means.
UK reference levels and next-step guidance, so after you test you know whether the result looks normal, whether it should be repeated, and when to contact a water company, council, or laboratory.
Open the centreStart with the right test for your situation.
Three minutes to choose. Days, not weeks, to a clearer picture of your home water.
Find the right test Shop complete kitExplore local results