Cumbria · North West

Is Carlisle water hard or soft?

Hard at 205 ppm · 28 postcode districts

  • Supplier Severn Trent Water
  • County Cumbria
  • Postcodes 28
Area average
205
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Carlisle is 205 ppm, classified as hard. Carlisle is served by Severn Trent Water, covering 28 postcode districts across Cumbria in the North West region.

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

By postcode

Water Hardness by Postcode in Carlisle

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
CA28 Severn Trent Water
244
244 ppm Hard
CA27 Severn Trent Water
243
243 ppm Hard
CA26 Severn Trent Water
242
242 ppm Hard
CA25 Severn Trent Water
241
241 ppm Hard
CA24 Severn Trent Water
240
240 ppm Hard
CA23 Severn Trent Water
239
239 ppm Hard
CA22 Severn Trent Water
238
238 ppm Hard
CA21 Severn Trent Water
237
237 ppm Hard
CA20 Severn Trent Water
236
236 ppm Hard
CA19 Severn Trent Water
212
212 ppm Hard
CA18 Severn Trent Water
211
211 ppm Hard
CA17 Severn Trent Water
210
210 ppm Hard
CA16 Severn Trent Water
209
209 ppm Hard
CA15 Severn Trent Water
208
208 ppm Hard
CA14 Severn Trent Water
207
207 ppm Hard
CA13 Severn Trent Water
206
206 ppm Hard
CA12 Severn Trent Water
205
205 ppm Hard
CA11 Severn Trent Water
204
204 ppm Hard
CA10 Severn Trent Water
203
203 ppm Hard
CA9 Severn Trent Water
172
172 ppm Moderately Hard
CA8 Severn Trent Water
171
171 ppm Moderately Hard
CA7 Severn Trent Water
170
170 ppm Moderately Hard
CA6 Severn Trent Water
169
169 ppm Moderately Hard
CA5 Severn Trent Water
168
168 ppm Moderately Hard
CA4 Severn Trent Water
167
167 ppm Moderately Hard
CA3 Severn Trent Water
166
166 ppm Moderately Hard
CA2 Severn Trent Water
165
165 ppm Moderately Hard
CA1 Severn Trent Water
164
164 ppm Moderately Hard
Suppliers

Water Companies Serving Carlisle

Tap for full coverage area and hardness data.

Severn Trent Water

222 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 Carlisle

Popular choices for households dealing with hard water.

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

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 ~6 months.

View on Amazon

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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