Staffordshire · West Midlands

Is Stoke On Trent water hard or soft?

Hard at 222 ppm · 21 postcode districts

  • Supplier Severn Trent Water
  • County Staffordshire
  • Postcodes 21
Area average
222
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

Stoke On Trent water hardness at a glance

  1. Stoke On Trent water is hard, averaging 222 ppm across 21 postcode districts.
  2. That is 15 ppm above the UK average of 207 ppm.
  3. The hardest district is ST9 at 254 ppm; the softest is ST10 at 191 ppm.
  4. The supplier is Severn Trent Water.
  5. Expect limescale on kettles, taps and showerheads; see the water softener guide for sizing and costs.

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The average water hardness in Stoke On Trent is 222 ppm, classified as hard. Stoke On Trent is served by Severn Trent Water, covering 21 postcode districts across Staffordshire in the West Midlands region.

Hardness varies across the area. See the table below for a breakdown by postcode district. ST9 has the hardest water at 254 ppm, while ST10 is the softest at 191 ppm.

By postcode

Water Hardness by Postcode in Stoke On Trent

Sorted by hardness. Tap a postcode for full details.

Postcode Water Company Hardness PPM Level
ST9 Severn Trent Water
254
254 ppm Hard
ST8 Severn Trent Water
253
253 ppm Hard
ST7 Severn Trent Water
252
252 ppm Hard
ST6 Severn Trent Water
251
251 ppm Hard
ST5 Severn Trent Water
250
250 ppm Hard
ST4 Severn Trent Water
249
249 ppm Hard
ST3 Severn Trent Water
248
248 ppm Hard
ST2 Severn Trent Water
247
247 ppm Hard
ST1 Severn Trent Water
246
246 ppm Hard
ST21 Severn Trent Water
225
225 ppm Hard
ST20 Severn Trent Water
224
224 ppm Hard
ST19 Severn Trent Water
200
200 ppm Hard
ST18 Severn Trent Water
199
199 ppm Hard
ST17 Severn Trent Water
198
198 ppm Hard
ST16 Severn Trent Water
197
197 ppm Hard
ST15 Severn Trent Water
196
196 ppm Hard
ST14 Severn Trent Water
195
195 ppm Hard
ST13 Severn Trent Water
194
194 ppm Hard
ST12 Severn Trent Water
193
193 ppm Hard
ST11 Severn Trent Water
192
192 ppm Hard
ST10 Severn Trent Water
191
191 ppm Hard
Suppliers

Water Companies Serving Stoke On Trent

Tap for full coverage area and hardness data.

Severn Trent Water

222 ppm Hard

Each water company publishes its own hardness data, so you can cross-check the Stoke On Trent figures here against the published hardness data from Severn Trent Water.

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 Stoke On Trent

Popular choices for households dealing with hard water.

Splendid Twin Tank Water Softener

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

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

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 Stoke On Trent water

Is Stoke On Trent water hard or soft?
Stoke On Trent is classified as hard, averaging 222 ppm across 21 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.
Which postcode in Stoke On Trent has the hardest water?
ST9 has the hardest water in Stoke On Trent at 254 ppm, while ST10 is the softest at 191 ppm. See the full table above for every district.
Which water company supplies Stoke On Trent?
Stoke On Trent is supplied by Severn Trent Water, covering 21 postcode districts across Staffordshire.
Is tap water in Stoke On Trent safe to drink?
Hardness is not a safety issue: the World Health Organization sets no health-based limit for water hardness, so hard and soft water are both fine to drink. Drinking water quality is regulated by the Drinking Water Inspectorate in England and Wales and the Drinking Water Quality Regulator in Scotland, and your water company publishes test results for your area.
Do I need a water softener in Stoke On Trent?
At 222 ppm, many households in Stoke On Trent 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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