WaterWater Hardness in North West
270 postcode districts • 5 counties
Slightly Hard
90
Average ppm
34
Minimum ppm
244
Maximum ppm
270
Postcodes
Water Hardness Across North West
The average water hardness in the North West region is 90 ppm, classified as slightly hard. Across 270 postcode districts, hardness ranges from 34 ppm to 244 ppm.
The region is served by Severn Trent Water, United Utilities. Water hardness varies by county — see the breakdown below or check your specific postcode.
Counties in North West
| County | Avg Hardness | PPM | Level | Postcodes |
|---|---|---|---|---|
| Cumbria | 205 ppm | Hard | 28 | |
| Lancashire | 87 ppm | Slightly Hard | 55 | |
| Greater Manchester | 77 ppm | Slightly Hard | 76 | |
| Merseyside | 73 ppm | Slightly Hard | 40 | |
| Cheshire | 71 ppm | Slightly Hard | 71 |
Water Companies in North West
Hard Water Guides
Learn more about water hardness and how to manage it.
Get Water Hardness Updates
Be notified when your water company reports changes to hardness levels.