Water hardness

DN9 Doncaster

Near or below the UK average. Limescale builds slowly.

At 180 ppm, Doncaster ranks near the UK's softest water areas — compare it against the hardest areas.

Moderately Hard 180 ppm Yorkshire Yorkshire Water
Your reading
180
parts per million
Soft
Moderate
Hard
Very hard
0100200300400+

What this means for your home

Based on 180 ppm in Doncaster (moderately hard water).

  • Noticeable limescale buildup in kettles and boilers
  • Soap may not lather as easily
  • Showerhead may need descaling periodically
  • Slight film on glassware after washing
Heat loss
4%
Light scaling
Softener salt
£10–18
per year
Worth it?
Yes
at 180 ppm
Suggested for moderately hard 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 Doncaster?

A verdict and running-cost estimate based on DN9's 180 ppm reading, for a typical 4-person household.

Softener recommended

Hardness is moderate to hard, so a softener cuts scale and soap use and usually pays back over its lifetime.

Recommended size
24k
grain capacity, regenerates ~every 14.9 days
Salt running cost
£10–18
per year (~37 kg salt)
Limescale
4%
est. heater efficiency loss. Light scaling
Soap saving
Low
Some saving: expect to use slightly less soap and detergent.

Appliance impact at 180 ppm: slight: minor descaling extends kettle/boiler life. Sized for a 4-person home; regenerates roughly every 15 days (estimate). Figures are conservative estimates and vary with household size and usage.

Water quality details

Hardness data for DN9

Sourced from Yorkshire Water's published water-quality reports and public records.

Hardness measurements

Parts per million (ppm CaCO₃)180
Degrees Clark (°Clark)12.6
Degrees French (°fH)18
Degrees German (°dH)10.1
Calcium (mg/L Ca²⁺)72

Supplier and area

Water supplier Yorkshire Water
Region Yorkshire
County South Yorkshire
Hardness band Moderately Hard
UK average 207 ppm
Visit Yorkshire Water page
Official source
Yorkshire Water water-hardness report

Enter your postcode in the search tool to get the calcium and magnesium hardness level for your specific area.

Nearby

Other areas near Doncaster

DN8
Doncaster
179ppm
Moderately Hard
DN10
Doncaster
165ppm
Moderately Hard
DN11
Doncaster
166ppm
Moderately Hard
FAQ

Common questions about DN9

What is the water hardness in DN9 Doncaster?
The water in DN9 Doncaster has a hardness level of 180 ppm (parts per million) calcium carbonate, classified as moderately hard. This is 27 ppm below the UK national average of 207 ppm.
Which water company supplies DN9?
DN9 Doncaster is supplied by Yorkshire Water. Yorkshire Water serves the Yorkshire region.
Is the water in DN9 safe to drink?
Yes. Moderately Hard water at 180 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 DN9?
At 180 ppm, the water in DN9 is moderately hard and unlikely to cause significant issues. A jug filter can improve taste, but a water softener is generally not necessary.
What does 180 ppm water hardness mean?
180 ppm means there are 180 parts per million of calcium carbonate dissolved in the water. This is equivalent to 12.6 Clark degrees, 10.1 German degrees, or 18 French degrees. Water above 180 ppm is generally considered hard.
What size water softener do I need in DN9?
For a typical 4-person home at 180 ppm, a 24,000 grain softener is a sensible size. It would regenerate roughly every 14.9 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 DN9?
At 180 ppm, expect to use about 37 kg of salt a year, costing roughly £10–£18/year. Hardness is moderate to hard, so a softener cuts scale and soap use and usually pays back over its lifetime.

Check another postcode

Compare hardness across areas before moving or buying a softener.