Somerset · South West

Is Bath water hard or soft?

Hard at 250 ppm · 19 postcode districts

  • Supplier Wessex Water
  • County Somerset
  • Postcodes 19
Area average
250
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

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The average water hardness in Bath is 250 ppm, classified as hard. Bath is served by Wessex Water, covering 19 postcode districts across Somerset in the South West region.

Hardness varies across the area — see the table below for a breakdown by postcode district. BA9 has the hardest water at 291 ppm, while BA10 is the softest at 204 ppm.

By postcode

Water Hardness by Postcode in Bath

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
BA9 Wessex Water
291
291 ppm Hard
BA8 Wessex Water
290
290 ppm Hard
BA7 Wessex Water
289
289 ppm Hard
BA6 Wessex Water
288
288 ppm Hard
BA5 Wessex Water
287
287 ppm Hard
BA4 Wessex Water
286
286 ppm Hard
BA3 Wessex Water
285
285 ppm Hard
BA2 Wessex Water
284
284 ppm Hard
BA1 Wessex Water
283
283 ppm Hard
BA22 Wessex Water
239
239 ppm Hard
BA21 Wessex Water
238
238 ppm Hard
BA20 Wessex Water
237
237 ppm Hard
BA16 Wessex Water
210
210 ppm Hard
BA15 Wessex Water
209
209 ppm Hard
BA14 Wessex Water
208
208 ppm Hard
BA13 Wessex Water
207
207 ppm Hard
BA12 Wessex Water
206
206 ppm Hard
BA11 Wessex Water
205
205 ppm Hard
BA10 Wessex Water
204
204 ppm Hard
Suppliers

Water Companies Serving Bath

Tap for full coverage area and hardness data.

Wessex Water

231 ppm Hard

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 Bath

Popular choices for households dealing with hard water.

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.

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Philips Shower Filter

From ~£30

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

From ~£20

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 Bath water

Is Bath water hard or soft?
Bath is classified as hard, averaging 250 ppm across 19 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.
Which postcode in Bath has the hardest water?
BA9 has the hardest water in Bath at 291 ppm, while BA10 is the softest at 204 ppm. See the full table above for every district.
Which water company supplies Bath?
Bath is supplied by Wessex Water, covering 19 postcode districts across Somerset.
Is tap water in Bath safe to drink?
Yes. All tap water in Bath meets UK drinking water standards. Hardness affects taste and limescale buildup but not safety.
Do I need a water softener in Bath?
At 250 ppm, many households in Bath 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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