Scotland · Water company

Scottish Water Hardness

Average 54 ppm across 3 postcodes served.

  • Range 44–60 ppm
  • Region Scotland
  • Postcodes 3
Company average
54
ppm CaCO₃
Soft
Soft
Moderate
Hard
Very hard
0100200300400+
54
Avg ppm
44
Min ppm
60
Max ppm
3
Postcodes

About Scottish Water

Scottish Water is the sole water supplier for the whole of Scotland, serving 5.4 million people. Scotland's ancient granite and metamorphic rock geology produces some of the softest water in the UK.

At 54 ppm on average, Scottish Water ranks as soft water. See how it compares across the UK in our 50 softest water areas ranking.

Worth reading: our water softener guide compares the options for Scottish Water customers, and our limescale removal guide has quick fixes for kettles, taps, and boilers.

Distribution

Hardness Breakdown

3
Soft
(100%)
0
Slightly Hard
(0%)
0
Moderate
(0%)
0
Hard
(0%)
0
Very Hard
(0%)
All areas

Areas Served by Scottish Water

Every postcode district, sorted by hardness.

Postcode Town Hardness PPM Level
TD15 Berwick Upon Tweed
60
60 ppm Soft
TD12 Cornhill On Tweed
57
57 ppm Soft
TD9 Newcastleton
44
44 ppm Soft

Test Your Water on Scottish Water

At 54 ppm on average, your water is soft. A home testing kit lets you verify the exact hardness for your postcode and check for other contaminants.

TESPERT 16-in-1 Water Testing Kit

From ~£10

Home water test strips that check hardness, pH, chlorine, lead, and 12 other parameters. Results in around 60 seconds. 125 strips per pack.

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FAQ

Common questions about Scottish Water water hardness

How do I check Scottish Water hardness by postcode?
Enter your postcode in the checker on the WaterHard.uk homepage, or find your district in the table above. Scottish Water serves 3 postcode districts across Scotland, ranging from 44 to 60 ppm.
Is there a Scottish Water hardness checker or map?
Scottish Water publishes water quality data by postcode, but it can be scattered across PDF reports. WaterHard.uk compiles it into the searchable table above so you can find your district's reading in one place.
How hard is Scottish Water water in my area?
It depends on your exact postcode. Scottish Water supplies range from 44 ppm to 60 ppm, averaging 54 ppm (soft) across 3 postcode districts in Scotland. Use the table above to find your specific district.
Is Scottish Water water hard or soft?
Scottish Water averages 54 ppm, classified as soft. Most households on Scottish Water see little to no limescale build-up, though individual postcodes can vary, so check the table above for your district.

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