Northamptonshire · East Midlands

Is Northampton water hard or soft?

Hard at 278 ppm · 19 postcode districts

  • Supplier Anglian Water
  • County Northamptonshire
  • Postcodes 19
Area average
278
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Northampton is 278 ppm, classified as hard. Northampton is served by Anglian Water, covering 19 postcode districts across Northamptonshire in the East Midlands region.

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

By postcode

Water Hardness by Postcode in Northampton

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
NN9 Anglian Water
298
298 ppm Hard
NN29 Anglian Water
297
297 ppm Hard
NN8 Anglian Water
297
297 ppm Hard
NN7 Anglian Water
296
296 ppm Hard
NN6 Anglian Water
295
295 ppm Hard
NN5 Anglian Water
294
294 ppm Hard
NN4 Anglian Water
293
293 ppm Hard
NN3 Anglian Water
292
292 ppm Hard
NN2 Anglian Water
291
291 ppm Hard
NN1 Anglian Water
290
290 ppm Hard
NN18 Anglian Water
263
263 ppm Hard
NN17 Anglian Water
262
262 ppm Hard
NN16 Anglian Water
261
261 ppm Hard
NN15 Anglian Water
260
260 ppm Hard
NN14 Anglian Water
259
259 ppm Hard
NN13 Anglian Water
258
258 ppm Hard
NN12 Anglian Water
257
257 ppm Hard
NN11 Anglian Water
256
256 ppm Hard
NN10 Anglian Water
255
255 ppm Hard
Suppliers

Water Companies Serving Northampton

Tap for full coverage area and hardness data.

Anglian Water

321 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
Recommended

Products for Northampton

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.

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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.

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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Get Northampton Water Updates

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