United Utilities Tap Water Quality Data

United Utilities supplies water to North West England. We have data for 4,503 supply zones, sourced from the Drinking Water Inspectorate via the Stream open data initiative.

What's actually in your tap water?

Real 2024 lab data for every UK postcode

When was your home built?

water companies covered

100,000+

zones mapped

DWI

real lab data

Data sourced from the Drinking Water Inspectorate via the Stream open data initiative

New baby at home?

Nitrates, lead and formula — what parents need to know

Parents hub →

Dry skin or eczema?

Hard water and skin — the evidence

Skin & health hub →

Just bought a house?

What to check before you exchange

Homebuyers hub →