Research & Guides
Water quality guides
In-depth research on UK tap water quality, based on government data and scientific evidence. Written to help you make informed decisions about what you drink.
PFAS in UK Drinking Water
Everything you need to know about forever chemicals
The UK's Lead Pipe Problem
Which areas are most affected and what you can do
UK Water Hardness Map
Is your water hard or soft, and does it matter?
Understanding Your Water Supplier
How to read compliance reports and quality data
How to Test Your Tap Water
From DIY strips to professional lab analysis