Oxfordshire · South East

Is Oxford water hard or soft?

Very Hard at 304 ppm · 26 postcode districts

Supplier Thames Water
County Oxfordshire
Postcodes 26

Area average

304

ppm CaCO₃

Very Hard

Soft

Moderate

Hard

Very hard

0100200300400+

The average water hardness in Oxford is 304 ppm, classified as very hard. Oxford is served by Thames Water, covering 26 postcode districts across Oxfordshire 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 Oxford

Sorted by hardness — tap a postcode for full details.

Postcode	Water Company	Hardness	PPM	Level
OX13	Thames Water	350	350 ppm	Very Hard
OX12	Thames Water	349	349 ppm	Very Hard
OX44	Thames Water	349	349 ppm	Very Hard
OX11	Thames Water	348	348 ppm	Very Hard
OX10	Thames Water	347	347 ppm	Very Hard
OX9	Thames Water	335	335 ppm	Very Hard
OX7	Thames Water	333	333 ppm	Very Hard
OX5	Thames Water	331	331 ppm	Very Hard
OX4	Thames Water	330	330 ppm	Very Hard
OX3	Thames Water	329	329 ppm	Very Hard
OX2	Thames Water	328	328 ppm	Very Hard
OX1	Thames Water	327	327 ppm	Very Hard
OX39	Thames Water	321	321 ppm	Very Hard
OX33	Thames Water	315	315 ppm	Very Hard
OX29	Thames Water	288	288 ppm	Hard
OX28	Thames Water	287	287 ppm	Hard
OX27	Thames Water	286	286 ppm	Hard
OX26	Thames Water	285	285 ppm	Hard
OX25	Thames Water	284	284 ppm	Hard
OX20	Thames Water	279	279 ppm	Hard
OX18	Thames Water	254	254 ppm	Hard
OX17	Thames Water	253	253 ppm	Hard
OX49	Thames Water	253	253 ppm	Hard
OX16	Thames Water	252	252 ppm	Hard
OX15	Thames Water	251	251 ppm	Hard
OX14	Thames Water	250	250 ppm	Hard

Suppliers

Water Companies Serving Oxford

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 Oxford

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Splendid Twin Tank Water Softener

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Philips Shower Filter

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