East Of England · County

Water hardness in Cambridgeshire

Average 322 ppm across 51 postcodes and 2 towns.

Range 267–373 ppm
Towns 2
Suppliers Anglian Water

County average

322

ppm CaCO₃

Very Hard

Soft

Moderate

Hard

Very hard

0100200300400+

322

Avg ppm

267

Min ppm

373

Max ppm

Postcodes

Water Hardness Across Cambridgeshire

The average water hardness in Cambridgeshire is 322 ppm, classified as very hard. Across 51 postcode districts in the East Of England region, hardness ranges from 267 ppm to 373 ppm.

Cambridgeshire is served by Anglian Water. With very hard water, residents may benefit from a water softener to reduce limescale and protect appliances.

By town

Towns in Cambridgeshire

Sorted by hardness — tap a town for full details.

Town	Hardness	PPM	Level
Cambridge	327	327 ppm	Very Hard
Peterborough	319	319 ppm	Very Hard

Suppliers

Water Companies in Cambridgeshire

Companies supplying water to this county.

Anglian Water

321 ppm Very Hard

All postcodes

Postcodes in Cambridgeshire

Every postcode district in the county, sorted by hardness.

Postcode	Town	Hardness	PPM	Level
CB25	Cambridge	373	373 ppm	Very Hard
CB24	Cambridge	372	372 ppm	Very Hard
CB23	Cambridge	371	371 ppm	Very Hard
CB22	Cambridge	370	370 ppm	Very Hard
CB21	Cambridge	369	369 ppm	Very Hard
PE9	Stamford	367	367 ppm	Very Hard
PE8	Peterborough	366	366 ppm	Very Hard
PE7	Peterborough	365	365 ppm	Very Hard
PE6	Peterborough	364	364 ppm	Very Hard
PE5	Peterborough	363	363 ppm	Very Hard
PE4	Peterborough	362	362 ppm	Very Hard
PE3	Peterborough	361	361 ppm	Very Hard
PE2	Peterborough	360	360 ppm	Very Hard
PE1	Peterborough	359	359 ppm	Very Hard
PE38	Downham Market	341	341 ppm	Very Hard
PE37	Swaffham	340	340 ppm	Very Hard
PE36	Hunstanton	339	339 ppm	Very Hard
PE34	King's Lynn	337	337 ppm	Very Hard
CB11	Saffron Walden	336	336 ppm	Very Hard
PE33	King's Lynn	336	336 ppm	Very Hard
CB10	Saffron Walden	335	335 ppm	Very Hard
PE32	King's Lynn	335	335 ppm	Very Hard
PE31	King's Lynn	334	334 ppm	Very Hard
PE30	King's Lynn	333	333 ppm	Very Hard
PE29	Huntingdon	309	309 ppm	Very Hard
PE28	Huntingdon	308	308 ppm	Very Hard
PE27	St Ives	307	307 ppm	Very Hard
PE26	Huntingdon	306	306 ppm	Very Hard
CB9	Haverhill	305	305 ppm	Very Hard
PE25	Skegness	305	305 ppm	Very Hard
CB8	Newmarket	304	304 ppm	Very Hard
PE24	Skegness	304	304 ppm	Very Hard
CB7	Ely	303	303 ppm	Very Hard
PE23	Spilsby	303	303 ppm	Very Hard
CB6	Ely	302	302 ppm	Very Hard
PE22	Boston	302	302 ppm	Very Hard
CB5	Cambridge	301	301 ppm	Very Hard
PE21	Boston	301	301 ppm	Very Hard
CB4	Cambridge	300	300 ppm	Hard
PE20	Boston	300	300 ppm	Hard
CB3	Cambridge	299	299 ppm	Hard
CB2	Cambridge	298	298 ppm	Hard
CB1	Cambridge	297	297 ppm	Hard
PE19	St Neots	276	276 ppm	Hard
PE16	Chatteris	273	273 ppm	Hard
PE15	March	272	272 ppm	Hard
PE14	Wisbech	271	271 ppm	Hard
PE13	Wisbech	270	270 ppm	Hard
PE12	Spalding	269	269 ppm	Hard
PE11	Spalding	268	268 ppm	Hard
PE10	Bourne	267	267 ppm	Hard

Recommended

Products for Cambridgeshire

Top picks for households in very hard water areas.

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.

View on Amazon

Philips AWP1775 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 East Of England · Hardest water areas · Softest water areas · Hard water solutions

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