Average 87 ppm across 55 postcodes and 4 towns.
The average water hardness in Lancashire is 87 ppm, classified as slightly hard. Across 55 postcode districts in the North West region, hardness ranges from 46 ppm to 131 ppm.
Lancashire is served by United Utilities. With slightly hard water, limescale is unlikely to be a major concern in most homes.
Sorted by hardness — tap a town for full details.
Companies supplying water to this county.
Every postcode district in the county, sorted by hardness.
Learn more about water hardness and how to manage it.
Be notified when water companies in Lancashire report changes to hardness levels.