UK region

Water hardness in Yorkshire

Average 215 ppm across 217 postcode districts — classified as hard.

Range 150–300 ppm
Counties 4
Suppliers Yorkshire Water

Regional average

215

ppm CaCO₃

Hard

Soft

Moderate

Hard

Very hard

0100200300400+

215

Avg ppm

150

Min ppm

300

Max ppm

217

Postcodes

Water Hardness Across Yorkshire

The average water hardness in the Yorkshire region is 215 ppm, classified as hard. Across 217 postcode districts, hardness ranges from 150 ppm to 300 ppm.

The region is served by Yorkshire Water. Water hardness varies by county — see the breakdown below or check your specific postcode.

At 215 ppm, Yorkshire ranks as hard water nationally. Compare it against the 50 hardest water areas in the UK.

By county

Counties in Yorkshire

Sorted by hardness — see how your county compares.

County	Hardness	PPM	Level	Postcodes
East Yorkshire	237	237 ppm	Hard	20
North Yorkshire	215	215 ppm	Hard	34
West Yorkshire	214	214 ppm	Hard	86
South Yorkshire	211	211 ppm	Hard	77

Suppliers

Water Companies in Yorkshire

Tap on a company for full coverage area and hardness data.

Yorkshire Water

215 ppm Hard

Hard Water Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Hard Water Effects Solutions

Recommended

Products for Yorkshire

Top picks for households in hard water areas.

Splendid Twin Tank Water Softener

From ~£400

Twin-tank electric softener sized for 1 to 7 bedroom homes. Removes limescale from pipes, boilers, and appliances and delivers continuous soft water, with metered regeneration to keep salt use low.

View on Amazon

Philips Shower Filter

From ~£30

Instant improvement for skin and hair. Reduces chlorine and limescale at the showerhead, no plumbing needed. A good first step before committing to a full softener.

View on Amazon

FAQ

Common questions about Yorkshire water

Is Yorkshire's water hard or soft?

Yorkshire is classified as hard water, averaging 215 ppm across 217 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.

Is tap water in Yorkshire safe to drink?

Yes. All tap water in Yorkshire meets UK drinking water standards. Hardness affects taste and limescale buildup but not safety.

Why is water in Yorkshire hard?

Water hardness in Yorkshire depends on the geology — chalk and limestone aquifers dissolve calcium and magnesium into the supply, making it harder. Areas with sandstone or granite tend to be softer.

Does hard water affect boilers in Yorkshire?

Over time, limescale acts as an insulator in heat exchangers, reducing efficiency by a few percentage points each year if untreated. A water softener can help protect your boiler.

What's the average water hardness in Yorkshire?

The average water hardness across Yorkshire is 215 ppm (parts per million), classified as hard. It ranges from 150 ppm to 300 ppm across 217 postcode districts.

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