Water hardness

LA21 Coniston

Near or below the UK average. Limescale builds slowly.

At 97 ppm, Coniston ranks near the UK's softest water areas — compare it against the hardest areas.

Slightly Hard 97 ppm North West United Utilities
Your reading
97
parts per million
Soft
Moderate
Hard
Very hard
0100200300400+

What this means for your home

Based on 97 ppm in Coniston (slightly hard water).

  • Minor limescale may appear in kettles over time
  • Soap lathers reasonably well
  • Appliances generally unaffected
  • Good balance of mineral taste
Heat loss
1%
Minimal scaling
Softener salt
£6–10
per year
Worth it?
No
at 97 ppm
Suggested for slightly 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 Coniston?

A verdict and running-cost estimate based on LA21's 97 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 27.6 days
Salt running cost
£6–10
per year (~20 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 97 ppm: negligible: appliances reach full expected life. Sized for a 4-person home; regenerates roughly every 28 days (estimate). Figures are conservative estimates and vary with household size and usage.

Water quality details

Hardness data for LA21

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

Hardness measurements

Parts per million (ppm CaCO₃)97
Degrees Clark (°Clark)6.8
Degrees French (°fH)9.7
Degrees German (°dH)5.4
Calcium (mg/L Ca²⁺)39

Supplier and area

Water supplier United Utilities
Region North West
County Lancashire
Hardness band Slightly Hard
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 Coniston

LA20
Broughton In Furness
96ppm
Slightly Hard
LA22
Ambleside
98ppm
Slightly Hard
LA23
Windermere
99ppm
Slightly Hard
FAQ

Common questions about LA21

What is the water hardness in LA21 Coniston?
The water in LA21 Coniston has a hardness level of 97 ppm (parts per million) calcium carbonate, classified as slightly hard. This is 110 ppm below the UK national average of 207 ppm.
Which water company supplies LA21?
LA21 Coniston is supplied by United Utilities. United Utilities serves the North West region.
Is the water in LA21 safe to drink?
Yes. Slightly Hard water at 97 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 LA21?
At 97 ppm, the water in LA21 is slightly hard and unlikely to cause significant issues. A jug filter can improve taste, but a water softener is generally not necessary.
What does 97 ppm water hardness mean?
97 ppm means there are 97 parts per million of calcium carbonate dissolved in the water. This is equivalent to 6.8 Clark degrees, 5.4 German degrees, or 9.7 French degrees. Water above 180 ppm is generally considered hard.
What size water softener do I need in LA21?
For a typical 4-person home at 97 ppm, a 24,000 grain softener is a sensible size. It would regenerate roughly every 27.6 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 LA21?
At 97 ppm, expect to use about 20 kg of salt a year, costing roughly £6–£10/year. Water is soft to moderate, so limescale and soap costs are low and a softener rarely pays back.

Check another postcode

Compare hardness across areas before moving or buying a softener.