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Is Derby Water Hard or Soft?

Hard at 199 ppm • Derbyshire, East Midlands

199 PPM 0 200 400
Hard

The average water hardness in Derby is 199 ppm, classified as hard. Derby is served by Severn Trent Water, covering 23 postcode districts across Derbyshire in the East Midlands region.

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

Water Hardness by Postcode in Derby

Postcode Water Company Hardness PPM Level
DE45 Severn Trent Water
283 ppm
283 ppm Hard
DE75 Severn Trent Water
231 ppm
231 ppm Hard
DE74 Severn Trent Water
230 ppm
230 ppm Hard
DE73 Severn Trent Water
229 ppm
229 ppm Hard
DE72 Severn Trent Water
228 ppm
228 ppm Hard
DE24 Severn Trent Water
216 ppm
216 ppm Hard
DE23 Severn Trent Water
215 ppm
215 ppm Hard
DE22 Severn Trent Water
214 ppm
214 ppm Hard
DE21 Severn Trent Water
213 ppm
213 ppm Hard
DE65 Severn Trent Water
198 ppm
198 ppm Hard
DE15 Severn Trent Water
184 ppm
184 ppm Hard
DE14 Severn Trent Water
183 ppm
183 ppm Hard
DE7 Severn Trent Water
183 ppm
183 ppm Hard
DE13 Severn Trent Water
182 ppm
182 ppm Hard
DE6 Severn Trent Water
182 ppm
182 ppm Hard
DE12 Severn Trent Water
181 ppm
181 ppm Hard
DE5 Severn Trent Water
181 ppm
181 ppm Hard
DE11 Severn Trent Water
180 ppm
180 ppm Moderately Hard
DE4 Severn Trent Water
180 ppm
180 ppm Moderately Hard
DE3 Severn Trent Water
179 ppm
179 ppm Moderately Hard
DE1 Severn Trent Water
177 ppm
177 ppm Moderately Hard
DE56 Severn Trent Water
166 ppm
166 ppm Moderately Hard
DE55 Severn Trent Water
165 ppm
165 ppm Moderately Hard

Water Companies Serving Derby

Severn Trent Water

Average hardness: 222 ppm (Hard) • 345 postcodes served

Water Hardness Guides

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal

Recommended Products for Derby

Popular choices for households dealing with hard water in this area.

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.

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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.

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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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