WaterHard.uk

Water Hardness in OX5 Kidlington

Supplied by Thames Water • Oxfordshire, South East

331 PPM 0 200 400
Very Hard
331
ppm (mg/L CaCO₃)
23.2°
Clark Degrees
18.5°
German Degrees (dH)
33.1°
French Degrees (fH)

Water Hardness in Kidlington (OX5)

The water in postcode district OX5 is classified as very hard with a hardness level of 331 ppm (parts per million) calcium carbonate. This is 124 ppm above the UK national average of 207 ppm.

Your water is supplied by Thames Water, which serves the South East region. Thames Water draws water from sources that naturally contain dissolved minerals, primarily calcium and magnesium compounds.

What Does Very Hard Water Mean for Your Home?

  • ! Heavy limescale requiring frequent descaling
  • ! Blocked showerheads and reduced water flow
  • ! Substantially higher energy bills from boiler scale
  • ! Dry, itchy skin and lifeless hair
  • ! White crusty deposits on taps and surfaces
  • ! Reduced lifespan of washing machines and dishwashers

Solutions for Hard Water in Kidlington

At 331 ppm, you may benefit from a water softener or filter to reduce limescale and improve water quality.

View Solutions Water Softener Guide

Water2Buy W2B200 Water Softener

From ~£400

Best-value whole-house ion-exchange softener for UK homes. Eliminates limescale from pipes, boilers, and appliances. Digital metered regeneration — low salt use. 7-year warranty, suits 1–4 people.

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Philips AWP1775 Shower Filter

From ~£30

Instant improvement for skin and hair. Reduces chlorine and limescale at the showerhead — no plumbing needed. KDF filtration, cartridge lasts ~6 months. A great first step in a hard water area.

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BRITA Marella Water Filter Jug

From ~£20

UK's best-selling filter jug. Reduces limescale, chlorine, and metals for better-tasting tap water. Quick first step alongside a softener.

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How OX5 Compares

Area Hardness PPM
OX5 Kidlington
331 ppm
331 ppm
UK National Average
207 ppm
207 ppm

Nearby Areas

OX4
Oxford
330 ppm
OX7
Chipping Norton
333 ppm

Frequently Asked Questions

What is the water hardness in OX5 Kidlington?
The water in OX5 Kidlington has a hardness level of 331 ppm (parts per million) calcium carbonate, classified as very hard. This is 124 ppm above the UK national average of 207 ppm.
Which water company supplies OX5?
OX5 Kidlington is supplied by Thames Water. Thames Water serves the South East region.
Is the water in OX5 safe to drink?
Yes. Very Hard water at 331 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 OX5?
For very hard water at 331 ppm, a whole-house water softener is the most effective solution. You can also use a jug filter for drinking water, descaling products for appliances, and a shower filter for better skin and hair.
What does 331 ppm water hardness mean?
331 ppm means there are 331 parts per million of calcium carbonate dissolved in the water. This is equivalent to 23.2 Clark degrees, 18.5 German degrees, or 33.1 French degrees. Water above 180 ppm is generally considered hard.

Learn More

All postcodes in Kidlington Thames Water coverage Hard water effects on your home Solutions for hard water

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