Water Hardness in Carlisle

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.

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

Postcode

Water Company

Hardness

PPM

Level

CA28

Severn Trent Water

244 ppm

Hard

CA27

Severn Trent Water

243 ppm