Tap Water in LN12
Mablethorpe — Anglian Water
Tap water in Mablethorpe, supplied by Anglian Water, has the character of a blended surface and groundwater supply, with no dominant mineral signature. It's slightly hard, around the national midpoint, with a total hardness of 174 mg/L as CaCO₃. Bicarbonate is high at 281 mg/L: this water suits dark-roasted, milk-based coffee well, but will strip the acidity from lighter roasts and pour-over brewing.
Mineral composition
| mg/L | |||
|---|---|---|---|
| Calcium | 56 | ||
| Magnesium | 8 | ||
| Sodium | 83 | ||
| Sulfate | 64 | ||
| Chloride | 41 | ||
| Bicarbonate | ~281 | ||
| ~ Estimated from hardness and ion balance — not directly measured by the water company. | |||
Additional info
| Hardness | 173.968 as CaCO₃ |
| Alkalinity | 230.4 as CaCO₃ |
| pH | 7.81 |
| Conductivity | 538 µS/cm |
| Source | Anglian Water |
| Data year | 2025 |
What this means
Kettle & appliances
Light limescale will accumulate in kettles and on heating elements over weeks. A periodic descale (monthly or so) will keep things in check, but it's not urgent.
Espresso
Hardness at this level starts to affect espresso machines more noticeably. Scale will form in boilers over months, and the water's buffering will round off some of the brighter acidity in the cup. Regular descaling becomes worthwhile.
Filter & pour-over
Filter coffee starts to lose some of its top-end brightness here. Lighter roasts will taste rounder and less distinctive than they would with softer water, though medium and darker roasts hold up well. The cup won't be flat, but the crispest acidity is softened.
Drinking & cooking
A faint mineral taste may be noticeable if you're paying attention. Vegetables and pulses cook normally; rice and pasta are unaffected.
Bicarbonate
Heavily buffered water that resists pH change substantially: suited only to the darkest, most roast-forward beer styles (and even then may need dilution), while espresso at this level will taste dull, chalky, and lacking definition, with almost all origin character neutralised by the alkalinity.
Closest water profiles
Nearby areas
Data sourced from Anglian Water (2025). Looking for a specific address? Look up your full postcode for the most accurate result.