WaterHard.uk

Water Hardness in SE4 London

Supplied by Thames Water • Greater London, London

0 200 400 322 ppm
Very Hard
322
ppm (mg/L CaCO₃)
22.5°
Clark Degrees
18°
German Degrees (dH)
32.2°
French Degrees (fH)

Water Hardness in London (SE4)

The water in postcode district SE4 is classified as very hard with a hardness level of 322 ppm (parts per million) calcium carbonate. This is 117 ppm above the UK national average of 205 ppm.

Your water is supplied by Thames Water, which serves the London 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 London

At 322 ppm, you may benefit from a water softener or filter to reduce limescale and improve water quality.

View Solutions Water Softener Guide

How SE4 Compares

Area Hardness PPM
SE4 London
322 ppm
322 ppm
UK National Average
205 ppm
205 ppm

Nearby Areas

SE3
London
321 ppm
SE5
London
323 ppm
SE6
London
324 ppm

Frequently Asked Questions

What is the water hardness in SE4 London?
The water in SE4 London has a hardness level of 322 ppm (parts per million) calcium carbonate, classified as very hard. This is 117 ppm above the UK national average of 205 ppm.
Which water company supplies SE4?
SE4 London is supplied by Thames Water. Thames Water serves the London region.
Is the water in SE4 safe to drink?
Yes. Very Hard water at 322 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 SE4?
For very hard water at 322 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 322 ppm water hardness mean?
322 ppm means there are 322 parts per million of calcium carbonate dissolved in the water. This is equivalent to 22.5 Clark degrees, 18 German degrees, or 32.2 French degrees. Water above 180 ppm is generally considered hard.

All postcodes in London • Thames Water coverage • Hardest water areas • Softest water areas

Get updates for SE4

We'll notify you when Thames Water reports changes to water hardness in your area.