274mg of limescale minerals in every litre, the median across MK districts
Is Milton Keynes a hard water area?
Yes. Tap water across the MK postcode area is very hard, the top band on the scale water companies use, with a median of 274 mg/L calcium carbonate. It ranges from 213 mg/L in MK14 to 330 mg/L in MK18, from 25 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 MK 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 |
|---|---|---|---|
| MK18 | Buckinghamshire | 330 | very hard |
| MK44 | Bedford | 304 | very hard |
| MK43 | Bedford | 304 | very hard |
| MK41 | Bedford | 304 | very hard |
| MK1 | Milton Keynes | 284 | very hard |
| MK17 | Milton Keynes | 284 | very hard |
| MK10 | Milton Keynes | 284 | very hard |
| MK2 | Milton Keynes | 284 | very hard |
| MK3 | Milton Keynes | 284 | very hard |
| MK7 | Milton Keynes | 284 | very hard |
| MK15 | Milton Keynes | 284 | very hard |
| MK13 | Milton Keynes | 274 | very hard |
| MK4 | Milton Keynes | 274 | very hard |
| MK5 | Milton Keynes | 274 | very hard |
| MK9 | Milton Keynes | 274 | very hard |
| MK6 | Milton Keynes | 274 | very hard |
| MK45* | Central Bedfordshire | 274 | very hard |
| MK8 | Milton Keynes | 274 | very hard |
| MK40 | Bedford | 267 | very hard |
| MK42 | Bedford | 253 | very hard |
| MK46 | Milton Keynes | 247 | hard |
| MK16 | Milton Keynes | 247 | hard |
| MK19 | West Northamptonshire | 243 | hard |
| MK11 | Milton Keynes | 237 | hard |
| MK12 | Milton Keynes | 213 | hard |
| MK14 | Milton Keynes | 213 | hard |
What to do about it
Hard water: compare softener quotes
At 274 mg/L most MK homes get their money back on a softener within a few years. A filter will not touch limescale; only a softener does.
- Free quotes
- Local installers
- No obligation
Check your own district first
The area figure is a median. Your district can sit anywhere between 213 and 330 mg/L.
Softener quotes for Milton Keynes
At 274 mg/L most MK homes get their money back on a softener within a few years. Free quotes from installers covering your postcode.
Request a free assessment and we'll come back to you with local installer options for your area.
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Before you buy
- Do I need a water softener?The hardness bands, the symptoms, and when the answer is no
- Best water softener UKHarvey, Kinetico, BWT, Monarch and Water2Buy compared
- Water softener costUnit, fitting and salt, and how long the payback takes
- Installation explainedWhere it goes, the bypass tap, the drain, DIY or plumber
- Harvey vs KineticoThe two premium twin-cylinder brands, side by side
- Softener salt guideTablet, block or granular, and how much you get through
- Salt-free softenersConditioners and electronic descalers, honestly assessed
Questions about Milton Keynes water
Is Milton Keynes a hard water area?
Yes. The median hardness across MK postcode districts is 274 mg/L calcium carbonate, which is very hard. 100% of the 26 districts we hold readings for are hard or very hard (180 mg/L and above).
What is the water hardness in Milton Keynes?
Between 213 and 330 mg/L depending on the district, with a median of 274. The hardest measured district is MK18 at 330 mg/L and the softest is MK14 at 213. 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 Milton Keynes?
In most MK homes a softener pays for itself: at 274 mg/L kettles, boilers and showers scale up quickly. Check your own district first, because hardness varies from 213 to 330 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.