Dorset · South West

Is Dorchester water hard or soft?

Hard at 220 ppm · 11 postcode districts

  • Supplier Wessex Water
  • County Dorset
  • Postcodes 11
Area average
220
ppm CaCO₃
Hard
Soft
Moderate
Hard
Very hard
0100200300400+

Dorchester water hardness at a glance

  1. Dorchester water is hard, averaging 220 ppm across 11 postcode districts.
  2. That is 13 ppm above the UK average of 207 ppm.
  3. The hardest district is DT9 at 227 ppm; the softest is DT10 at 206 ppm.
  4. The supplier is Wessex 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 Dorchester is 220 ppm, classified as hard. Dorchester is served by Wessex Water, covering 11 postcode districts across Dorset in the South West region.

Hardness varies across the area. See the table below for a breakdown by postcode district. DT9 has the hardest water at 227 ppm, while DT10 is the softest at 206 ppm.

By postcode

Water Hardness by Postcode in Dorchester

Sorted by hardness. Tap a postcode for full details.

Postcode Water Company Hardness PPM Level
DT9 Wessex Water
227
227 ppm Hard
DT8 Wessex Water
226
226 ppm Hard
DT7 Wessex Water
225
225 ppm Hard
DT6 Wessex Water
224
224 ppm Hard
DT5 Wessex Water
223
223 ppm Hard
DT4 Wessex Water
222
222 ppm Hard
DT3 Wessex Water
221
221 ppm Hard
DT2 Wessex Water
220
220 ppm Hard
DT1 Wessex Water
219
219 ppm Hard
DT11 Wessex Water
207
207 ppm Hard
DT10 Wessex Water
206
206 ppm Hard
Suppliers

Water Companies Serving Dorchester

Tap for full coverage area and hardness data.

Wessex Water

231 ppm Hard

Each water company publishes its own hardness data, so you can cross-check the Dorchester figures here against the published hardness data from Wessex 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 Dorchester

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 Dorchester water

Is Dorchester water hard or soft?
Dorchester is classified as hard, averaging 220 ppm across 11 postcode districts. Expect visible limescale on kettles and taps within weeks at this level.
Which postcode in Dorchester has the hardest water?
DT9 has the hardest water in Dorchester at 227 ppm, while DT10 is the softest at 206 ppm. See the full table above for every district.
Which water company supplies Dorchester?
Dorchester is supplied by Wessex Water, covering 11 postcode districts across Dorset.
Is tap water in Dorchester 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 Dorchester?
At 220 ppm, many households in Dorchester 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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