WaterHard.uk

Water Hardness in RH5 Dorking

Supplied by Southern Water • Surrey, South East

0 200 400 325 ppm
Very Hard
325
ppm (mg/L CaCO₃)
22.7°
Clark Degrees
18.2°
German Degrees (dH)
32.5°
French Degrees (fH)

Water Hardness in Dorking (RH5)

The water in postcode district RH5 is classified as very hard with a hardness level of 325 ppm (parts per million) calcium carbonate. This is 120 ppm above the UK national average of 205 ppm.

Your water is supplied by Southern Water, which serves the South East region. Southern 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 Dorking

At 325 ppm, you may benefit from a water softener or filter to reduce limescale and improve water quality.

View Solutions Water Softener Guide

How RH5 Compares

Area Hardness PPM
RH5 Dorking
325 ppm
325 ppm
UK National Average
205 ppm
205 ppm

Nearby Areas

RH4
Dorking
324 ppm
RH6
Horley
326 ppm
RH7
Lingfield
327 ppm

Frequently Asked Questions

What is the water hardness in RH5 Dorking?
The water in RH5 Dorking has a hardness level of 325 ppm (parts per million) calcium carbonate, classified as very hard. This is 120 ppm above the UK national average of 205 ppm.
Which water company supplies RH5?
RH5 Dorking is supplied by Southern Water. Southern Water serves the South East region.
Is the water in RH5 safe to drink?
Yes. Very Hard water at 325 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 RH5?
For very hard water at 325 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 325 ppm water hardness mean?
325 ppm means there are 325 parts per million of calcium carbonate dissolved in the water. This is equivalent to 22.7 Clark degrees, 18.2 German degrees, or 32.5 French degrees. Water above 180 ppm is generally considered hard.

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