8mg of limescale minerals in every litre, the median across CA districts
Is Carlisle a hard water area?
No. Tap water across the CA postcode area is soft, so limescale is not a problem here, with a median of 8 mg/L calcium carbonate. It ranges from 8 mg/L in CA21 to 164 mg/L in CA11, from 27 districts with their own water company reading and 1 estimated from the area.
- 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 CA 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 | Area | mg/L | Hardness |
|---|---|---|---|
| CA11 | Westmorland and Furness | 164 | moderately hard |
| CA3 | Cumberland | 101 | moderately soft |
| CA2 | Cumberland | 101 | moderately soft |
| CA4 | Cumberland | 100 | moderately soft |
| CA1 | Cumberland | 100 | moderately soft |
| CA5 | Cumberland | 100 | moderately soft |
| CA6 | Cumberland | 72 | moderately soft |
| CA8 | Cumberland | 72 | moderately soft |
| CA7 | Cumberland | 52 | soft |
| CA16 | Westmorland and Furness | 22 | soft |
| CA17 | Westmorland and Furness | 22 | soft |
| CA10 | Westmorland and Furness | 22 | soft |
| CA28 | Cumberland | 8 | soft |
| CA27 | Cumberland | 8 | soft |
| CA25 | Cumberland | 8 | soft |
| CA9* | Northumberland | 8 | soft |
| CA12 | Cumberland | 8 | soft |
| CA13 | Cumberland | 8 | soft |
| CA14 | Cumberland | 8 | soft |
| CA18 | Cumberland | 8 | soft |
| CA19 | Cumberland | 8 | soft |
| CA20 | Cumberland | 8 | soft |
| CA22 | Cumberland | 8 | soft |
| CA23 | Cumberland | 8 | soft |
| CA24 | Cumberland | 8 | soft |
| CA26 | Cumberland | 8 | soft |
| CA15 | Cumberland | 8 | soft |
| CA21 | Cumberland | 8 | soft |
You do not need a softener in Carlisle.
At 8 mg/L the practical effects are minor. If you notice anything, it is usually chlorine rather than hardness: a shower filter or a filter jug deals with that.
Check your exact postcode
The area figure is a median. Your district can sit anywhere between 8 and 164 mg/L.
Questions about Carlisle water
Is Carlisle a hard water area?
No. The median hardness across CA postcode districts is 8 mg/L calcium carbonate, which is soft. 0% of the 28 districts we hold readings for are hard or very hard (180 mg/L and above).
What is the water hardness in Carlisle?
Between 8 and 164 mg/L depending on the district, with a median of 8. The hardest measured district is CA11 at 164 mg/L and the softest is CA21 at 8. 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 Carlisle?
Usually not. At a median of 8 mg/L limescale is a minor issue in Carlisle. A filter jug or a shower filter covers the everyday effects. Only districts at 180 mg/L or above are worth a softener quote.
Hardness as mg/L calcium carbonate from water company drinking-water tests and postcode checkers. See the UK hardness map for every area.