Greater London · London

Is Ilford water hard or soft?

Very Hard at 310 ppm · 11 postcode districts

  • Supplier Thames Water
  • County Greater London
  • Postcodes 11
Area average
310
ppm CaCO₃
Very Hard
Soft
Moderate
Hard
Very hard
0100200300400+

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The average water hardness in Ilford is 310 ppm, classified as very hard. Ilford is served by Thames Water, covering 11 postcode districts across Greater London in the London region.

Hardness varies across the area — see the table below for a breakdown by postcode district. IG11 has the hardest water at 331 ppm, while IG1 is the softest at 302 ppm.

By postcode

Water Hardness by Postcode in Ilford

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
IG11 Thames Water
331
331 ppm Very Hard
IG10 Thames Water
330
330 ppm Very Hard
IG9 Thames Water
310
310 ppm Very Hard
IG8 Thames Water
309
309 ppm Very Hard
IG7 Thames Water
308
308 ppm Very Hard
IG6 Thames Water
307
307 ppm Very Hard
IG5 Thames Water
306
306 ppm Very Hard
IG4 Thames Water
305
305 ppm Very Hard
IG3 Thames Water
304
304 ppm Very Hard
IG2 Thames Water
303
303 ppm Very Hard
IG1 Thames Water
302
302 ppm Very Hard
Suppliers

Water Companies Serving Ilford

Tap for full coverage area and hardness data.

Thames Water

302 ppm Very Hard

Each water company publishes its own hardness data, so you can cross-check the Ilford figures here against the published hardness data from Thames Water Utilities Ltd.

Water Hardness Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal
Recommended

Products for Ilford

Popular choices for households dealing with very hard water.

Splendid Twin Tank Water Softener

Twin-tank electric softener sized for 1 to 7 bedroom homes. Removes limescale from pipes, boilers, and appliances and delivers continuous soft water, with metered regeneration to keep salt use low.

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Philips Shower Filter

Quick win for skin and hair in hard water areas. Reduces chlorine and limescale, fits standard shower hoses in minutes, no tools needed. Cartridge lasts around 6 months.

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BRITA Marella Water Filter Jug

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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FAQ

Common questions about Ilford water

Is Ilford water hard or soft?
Ilford is classified as very hard, averaging 310 ppm across 11 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.
Which postcode in Ilford has the hardest water?
IG11 has the hardest water in Ilford at 331 ppm, while IG1 is the softest at 302 ppm. See the full table above for every district.
Which water company supplies Ilford?
Ilford is supplied by Thames Water, covering 11 postcode districts across Greater London.
Is tap water in Ilford safe to drink?
Yes. All tap water in Ilford meets UK drinking water standards. Hardness affects taste and limescale buildup but not safety.
Do I need a water softener in Ilford?
At 310 ppm, many households in Ilford notice limescale in kettles and showerheads within weeks. A shower filter is the cheapest first step; a whole-house softener gives the most complete protection.
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