How Wilmslow compares
At 134 mg/L (9.4 °Clark), Wilmslow is 45% below the median of the 411 English towns on this map (243 mg/L). It ranks 305 of 411 for hardness (1 is the hardest).
Water hardness in Wilmslow
Wilmslow has moderately hard water: some limescale, but easy to keep on top of.
Data
| Value | 134 mg/L calcium carbonate 9.4 °Clark, 7.5 °dH |
|---|---|
| Band | moderately hard |
| Area | Cheshire |
| Population | 25,725 |
| Water company | United Utilities |
| Postcode checked | SK9 0BB (Wilmslow) |
| Checked | 21 Oct 2026 |
| From the source | “"zoneName":"Wilmslow","Hardness Level":"Slightly Hard","Hardness Clark":"9.38" (unit Clark)” |
What it means for your home
Moderately hard water leaves some scale, but slowly. The kettle and shower head need descaling now and then, and that is usually all.
The right detergent dose and a correctly set dishwasher are enough for most homes. A softener is rarely needed.
How often to descale
As a rule of thumb for moderately hard water, kettles and shower heads need descaling every six to eight weeks. Descale whenever you see scale building up.
Common questions
Is hard water bad for you?
No. Hard water carries calcium and magnesium, minerals the body uses. Whether tap water is safe depends on germs and pollutants, which water companies test for, not on hardness.
Do I need a water softener in Wilmslow?
The water company's figure for Wilmslow is 134 mg/L (9.4 °Clark), which is moderately hard water. Usually not straight away. Set the dishwasher, dose detergent for your band and descale regularly. Get quotes for a softener only if scale is clearly damaging your boiler or appliances.
How do I find the value for my address?
Use your water company's postcode checker. Hardness can differ between districts, so check your own postcode, or test with strips or a drop test.
Nearby towns
Cheadle Hulme 6 km Hazel Grove 10 km Altrincham 10 km Macclesfield 10 km Stockport 10 km Sale 12 km Stretford 15 km Urmston 16 km