South East · County

Water hardness in East Sussex

Average 271 ppm across 30 postcodes and 1 towns.

Range 217–321 ppm
Towns 1
Suppliers Southern Water

County average

271

ppm CaCO₃

Hard

Soft

Moderate

Hard

Very hard

0100200300400+

271

Avg ppm

217

Min ppm

321

Max ppm

Postcodes

Water Hardness Across East Sussex

The average water hardness in East Sussex is 271 ppm, classified as hard. Across 30 postcode districts in the South East region, hardness ranges from 217 ppm to 321 ppm.

East Sussex is served by Southern Water. With hard water, residents may benefit from a water softener to reduce limescale and protect appliances.

By town

Towns in East Sussex

Sorted by hardness — tap a town for full details.

Town	Hardness	PPM	Level
Brighton	271	271 ppm	Hard

Suppliers

Water Companies in East Sussex

Companies supplying water to this county.

Southern Water

263 ppm Hard

All postcodes

Postcodes in East Sussex

Every postcode district in the county, sorted by hardness.

Postcode	Town	Hardness	PPM	Level
BN45	Brighton	321	321 ppm	Very Hard
BN44	Steyning	320	320 ppm	Very Hard
BN43	Shoreham By Sea	319	319 ppm	Very Hard
BN42	Brighton	318	318 ppm	Very Hard
BN41	Brighton	317	317 ppm	Very Hard
BN9	Newhaven	317	317 ppm	Very Hard
BN8	Lewes	316	316 ppm	Very Hard
BN7	Lewes	315	315 ppm	Very Hard
BN6	Hassocks	314	314 ppm	Very Hard
BN5	Henfield	313	313 ppm	Very Hard
BN3	Hove	311	311 ppm	Very Hard
BN2	Brighton	310	310 ppm	Very Hard
BN1	Brighton	309	309 ppm	Very Hard
BN27	Hailsham	257	257 ppm	Hard
BN26	Polegate	256	256 ppm	Hard
BN25	Seaford	255	255 ppm	Hard
BN24	Pevensey	254	254 ppm	Hard
BN23	Eastbourne	253	253 ppm	Hard
BN22	Eastbourne	252	252 ppm	Hard
BN21	Eastbourne	251	251 ppm	Hard
BN20	Eastbourne	250	250 ppm	Hard
BN18	Arundel	225	225 ppm	Hard
BN17	Littlehampton	224	224 ppm	Hard
BN16	Littlehampton	223	223 ppm	Hard
BN15	Lancing	222	222 ppm	Hard
BN14	Worthing	221	221 ppm	Hard
BN13	Worthing	220	220 ppm	Hard
BN12	Worthing	219	219 ppm	Hard
BN11	Worthing	218	218 ppm	Hard
BN10	Peacehaven	217	217 ppm	Hard

Recommended

Products for East Sussex

Top picks for households in hard water areas.

Splendid Twin Tank Water Softener

From ~£400

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.

View on Amazon

Philips Shower Filter

From ~£30

Instant improvement for skin and hair. Reduces chlorine and limescale at the showerhead, no plumbing needed. A good first step before committing to a full softener.

View on Amazon

Hard Water Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Hard Water Effects Solutions

All counties in South East · Hardest water areas · Softest water areas · Hard water solutions

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