WaterHard.uk

Water Hardness in RM18 Tilbury

Supplied by Thames Water • Greater London, London

338 PPM 0 200 400
Very Hard
338
ppm (mg/L CaCO₃)
23.7°
Clark Degrees
18.9°
German Degrees (dH)
33.8°
French Degrees (fH)

Water Hardness in Tilbury (RM18)

The water in postcode district RM18 is classified as very hard with a hardness level of 338 ppm (parts per million) calcium carbonate. This is 131 ppm above the UK national average of 207 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 Tilbury

At 338 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 RM18 Compares

Area Hardness PPM
RM18 Tilbury
338 ppm
338 ppm
UK National Average
207 ppm
207 ppm

Nearby Areas

RM17
Grays
337 ppm
RM19
Purfleet On Thames
339 ppm
RM20
Grays
262 ppm

Frequently Asked Questions

What is the water hardness in RM18 Tilbury?
The water in RM18 Tilbury has a hardness level of 338 ppm (parts per million) calcium carbonate, classified as very hard. This is 131 ppm above the UK national average of 207 ppm.
Which water company supplies RM18?
RM18 Tilbury is supplied by Thames Water. Thames Water serves the London region.
Is the water in RM18 safe to drink?
Yes. Very Hard water at 338 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 RM18?
For very hard water at 338 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 338 ppm water hardness mean?
338 ppm means there are 338 parts per million of calcium carbonate dissolved in the water. This is equivalent to 23.7 Clark degrees, 18.9 German degrees, or 33.8 French degrees. Water above 180 ppm is generally considered hard.

Learn More

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

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