Is Dorchester a hard water area?
Yes. Tap water across the DT postcode area is very hard, the top band on the scale water companies use, with a median of 305 mg/L calcium carbonate. It ranges from 285 mg/L in DT2 to 367 mg/L in DT9, from 4 districts with their own water company reading and 7 estimated from the area.
- Soft
- Moderately soft
- Slightly hard
- Very hard
- Soft
- 0 to 60 mg/L
- Moderately soft
- 60 to 120 mg/L
- Slightly hard
- 120 to 180 mg/L
- Hard
- 180 to 200 mg/L
- Very hard
- 200 to 400 mg/L
Hardness by DT district
Hardest first. Hard starts at 180 mg/L, very hard at 250. Districts marked with an asterisk take the area's median rather than a reading of their own.
| District | mg/L | Hardness |
|---|---|---|
| DT9 | 367 | very hard |
| DT8 | 314 | very hard |
| DT4* | 305 | very hard |
| DT5* | 305 | very hard |
| DT11* | 305 | very hard |
| DT3* | 305 | very hard |
| DT6* | 305 | very hard |
| DT7* | 305 | very hard |
| DT10* | 305 | very hard |
| DT1 | 296 | very hard |
| DT2 | 285 | very hard |
Softener quotes for Dorchester
At 305 mg/L most DT homes get their money back on a softener within a few years. Free quotes from installers covering your postcode, no obligation.
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Check your exact postcode
The area figure is a median. Your district can sit anywhere between 285 and 367 mg/L.
Nearby areas
- Is Dorchester a hard water area?
- Yes. The median hardness across DT postcode districts is 305 mg/L calcium carbonate, which is very hard. 100% of the 11 districts we hold readings for are hard or very hard (180 mg/L and above).
- What is the water hardness in Dorchester?
- Between 285 and 367 mg/L depending on the district, with a median of 305. The hardest measured district is DT9 at 367 mg/L and the softest is DT2 at 285. Figures come from water company drinking-water tests, with postcode-area estimates for districts that have no reading of their own.
- Do I need a water softener in Dorchester?
- In most DT homes a softener pays for itself: at 305 mg/L kettles, boilers and showers scale up quickly. Check your own district first, because hardness varies from 285 to 367 within the area.
Hardness as mg/L calcium carbonate from water company drinking-water tests and postcode checkers. See the UK hardness map for every area.