Water hardness

OL1 Oldham

Near or below the UK average. Limescale builds slowly.

At 46 ppm, Oldham ranks near the UK's softest water areas — compare it against the hardest areas.

Soft 46 ppm North West United Utilities
Your reading
46
parts per million
Soft
Moderate
Hard
Very hard
0100200300400+

What this means for your home

Based on 46 ppm in Oldham (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 46 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 Oldham?

A verdict and running-cost estimate based on OL1's 46 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 58.2 days
Salt running cost
£3–5
per year (~9 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 46 ppm: negligible: appliances reach full expected life. Sized for a 4-person home; regenerates roughly every 58 days (estimate). Figures are conservative estimates and vary with household size and usage.

Water quality details

Hardness data for OL1

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

Hardness measurements

Parts per million (ppm CaCO₃)46
Degrees Clark (°Clark)3.2
Degrees French (°fH)4.6
Degrees German (°dH)2.6
Calcium (mg/L Ca²⁺)18

Supplier and area

Water supplier United Utilities
Region North West
County Greater Manchester
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 Oldham

OL2
Oldham
47ppm
Soft
OL3
Oldham
48ppm
Soft
FAQ

Common questions about OL1

What is the water hardness in OL1 Oldham?
The water in OL1 Oldham has a hardness level of 46 ppm (parts per million) calcium carbonate, classified as soft. This is 161 ppm below the UK national average of 207 ppm.
Which water company supplies OL1?
OL1 Oldham is supplied by United Utilities. United Utilities serves the North West region.
Is the water in OL1 safe to drink?
Yes. Soft water at 46 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 OL1?
At 46 ppm, the water in OL1 is soft and unlikely to cause significant issues. A jug filter can improve taste, but a water softener is generally not necessary.
What does 46 ppm water hardness mean?
46 ppm means there are 46 parts per million of calcium carbonate dissolved in the water. This is equivalent to 3.2 Clark degrees, 2.6 German degrees, or 4.6 French degrees. Water above 180 ppm is generally considered hard.
What size water softener do I need in OL1?
For a typical 4-person home at 46 ppm, a 24,000 grain softener is a sensible size. It would regenerate roughly every 58.2 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 OL1?
At 46 ppm, expect to use about 9 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 Oldham water action plan

Enter your email for the short list of things worth doing at 46 ppm, and the upgrades you can safely ignore.

Check another postcode

Compare hardness across areas before moving or buying a softener.