Water hardness

CW9 Northwich

Near or below the UK average. Limescale builds slowly.

At 54 ppm, Northwich ranks near the UK's softest water areas — compare it against the hardest areas.

Soft 54 ppm North West United Utilities
Your reading
54
parts per million
Soft
Moderate
Hard
Very hard
0100200300400+

What this means for your home

Based on 54 ppm in Northwich (soft water).

  • Soap lathers easily with less product needed
  • Minimal limescale buildup in appliances
  • Gentle on skin and hair
  • May taste slightly flat compared to harder water
Heat loss
1%
Minimal scaling
Softener salt
£3–5
per year
Worth it?
No
at 54 ppm
Suggested for soft water
Filter jug (optional)
Mainly a taste preference, limescale won't be a real issue here.
From £20
Maintenance habits
Routine descaling once or twice a year is plenty.
Free
Softening

Should you soften the water in Northwich?

A verdict and running-cost estimate based on CW9's 54 ppm reading, for a typical 4-person household.

Softener optional

Water is soft to moderate, so limescale and soap costs are low and a softener rarely pays back.

Recommended size
24k
grain capacity, regenerates ~every 49.6 days
Salt running cost
£3–5
per year (~11 kg salt)
Limescale
1%
est. heater efficiency loss. Minimal scaling
Soap saving
Minimal
Water is already soft, so there is little detergent saving from softening.

Appliance impact at 54 ppm: negligible: appliances reach full expected life. Sized for a 4-person home; regenerates roughly every 50 days (estimate). Figures are conservative estimates and vary with household size and usage.

Water quality details

Hardness data for CW9

Sourced from United Utilities's published water-quality reports and public records.

Hardness measurements

Parts per million (ppm CaCO₃)54
Degrees Clark (°Clark)3.8
Degrees French (°fH)5.4
Degrees German (°dH)3
Calcium (mg/L Ca²⁺)22

Supplier and area

Water supplier United Utilities
Region North West
County Cheshire
Hardness band Soft
UK average 207 ppm
Visit United Utilities page
Official source
United Utilities Water Ltd water-hardness report

Read the hardness explainer (most North West water is soft or very soft) and download the factsheet for conversion tables.

Nearby

Other areas near Northwich

CW8
Northwich
53ppm
Soft
CW10
Middlewich
63ppm
Slightly Hard
CW11
Sandbach
64ppm
Slightly Hard
FAQ

Common questions about CW9

What is the water hardness in CW9 Northwich?
The water in CW9 Northwich has a hardness level of 54 ppm (parts per million) calcium carbonate, classified as soft. This is 153 ppm below the UK national average of 207 ppm.
Which water company supplies CW9?
CW9 Northwich is supplied by United Utilities. United Utilities serves the North West region.
Is the water in CW9 safe to drink?
Yes. Soft water at 54 ppm is safe to drink. Water hardness affects taste and can cause limescale, but it is not a health risk. In fact, hard water contains beneficial minerals like calcium and magnesium.
How can I reduce water hardness in CW9?
At 54 ppm, the water in CW9 is soft and unlikely to cause significant issues. A jug filter can improve taste, but a water softener is generally not necessary.
What does 54 ppm water hardness mean?
54 ppm means there are 54 parts per million of calcium carbonate dissolved in the water. This is equivalent to 3.8 Clark degrees, 3 German degrees, or 5.4 French degrees. Water above 180 ppm is generally considered hard.
What size water softener do I need in CW9?
For a typical 4-person home at 54 ppm, a 24,000 grain softener is a sensible size. It would regenerate roughly every 49.6 days. Larger households or higher daily use need a bigger unit. These figures are conservative estimates.
How much does it cost to run a water softener in CW9?
At 54 ppm, expect to use about 11 kg of salt a year, costing roughly £3–£5/year. Water is soft to moderate, so limescale and soap costs are low and a softener rarely pays back.

Your Northwich water action plan

Enter your email for the short list of things worth doing at 54 ppm, and the upgrades you can safely ignore.

Check another postcode

Compare hardness across areas before moving or buying a softener.