Berkshire · South East

Is Iver water hard or soft?

Hard at 291 ppm · 10 postcode districts

Supplier Thames Water
County Berkshire
Postcodes 10

Area average

291

ppm CaCO₃

Hard

Soft

Moderate

Hard

Very hard

0100200300400+

The average water hardness in Iver is 291 ppm, classified as hard. Iver is served by Thames Water, covering 10 postcode districts across Berkshire in the South East region.

Hardness varies across the area — see the table below for a breakdown by postcode district.

By postcode

Water Hardness by Postcode in Iver

Sorted by hardness — tap a postcode for full details.

Postcode	Water Company	Hardness	PPM	Level
SL3	Thames Water	350	350 ppm	Very Hard
SL2	Thames Water	349	349 ppm	Very Hard
SL1	Thames Water	348	348 ppm	Very Hard
SL0	Thames Water	347	347 ppm	Very Hard
SL9	Thames Water	255	255 ppm	Hard
SL8	Thames Water	254	254 ppm	Hard
SL7	Thames Water	253	253 ppm	Hard
SL6	Thames Water	252	252 ppm	Hard
SL5	Thames Water	251	251 ppm	Hard
SL4	Thames Water	250	250 ppm	Hard

Suppliers

Water Companies Serving Iver

Tap for full coverage area and hardness data.

Thames Water

302 ppm Very Hard

Water Hardness Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal

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Products for Iver

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Splendid Twin Tank Water Softener

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Philips Shower Filter

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BRITA Marella Water Filter Jug

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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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