Tap Water in L18
Mossley — United Utilities
Tap water in Mossley, supplied by United Utilities, has the character of soft upland reservoir water, common in the north and west. It's soft water, low in dissolved minerals, with a total hardness of 73 mg/L as CaCO₃.
Mineral composition
| mg/L | |
|---|---|
| Calcium | 23 |
| Magnesium | 4 |
| Sodium | 20 |
| Sulfate | 26 |
| Chloride | 21 |
| Bicarbonate | 50 |
Additional info
| Hardness | 73 as CaCO₃ |
| Alkalinity | 40.6 as CaCO₃ |
| pH | 7.45 |
| Conductivity | 201 µS/cm |
| Source | United Utilities |
| Data year | 2025 |
What this means
Kettle & appliances
At this level of hardness, limescale is essentially a non-issue. Kettles, boilers, and heating elements will stay clean without treatment.
Espresso
Soft water is forgiving on espresso machines (no scale risk) but can produce a thinner, more acidic shot. The low mineral content means less buffering, so bright and sour notes tend to dominate. That said, lighter roasts can shine here in ways they won't in harder water.
Filter & pour-over
This is where soft water shows its range. A V60 or Chemex will produce a bright, clean, highly readable cup with clear origin character. Light and medium roasts tend to be at their most expressive. It can tip into sourness with very light roasts, but for most specialty filter coffee, this water is close to ideal.
Drinking & cooking
This water tastes clean and neutral. It lathers easily, rinses cleanly, and won't leave mineral deposits on glassware or cookware.
Bicarbonate
Water with very little buffering capacity: mash pH will drop readily without intervention, which suits pale, base-malt beers well, and espresso will tend bright and acidic with clearly readable fruit and floral notes, though it may tip into sourness with lighter roasts.
Closest water profiles
Nearby areas
Data sourced from United Utilities (2025). Looking for a specific address? Look up your full postcode for the most accurate result.