Tap Water in NR33
Z501 — Essex & Suffolk Water
Tap water in Z501, supplied by Essex & Suffolk 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 176 mg/L as CaCO₃.
Mineral composition
| mg/L | |
|---|---|
| Calcium | awaiting data |
| Magnesium | awaiting data |
| Sodium | awaiting data |
| Sulfate | awaiting data |
| Chloride | awaiting data |
| Bicarbonate | awaiting data |
Additional info
| Hardness | 176 as CaCO₃ |
| Alkalinity | awaiting data |
| pH | awaiting data |
| Conductivity | awaiting data |
| Source | Essex & Suffolk Water |
| Data year | 2024 |
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
Extremely high buffering that makes this water difficult to work with for any brewing or coffee application without significant dilution or acid treatment: mash pH will sit stubbornly high, extraction will be unbalanced, and espresso will taste flat and chalky with no discernible acidity.
Nearby areas
Data sourced from Essex & Suffolk Water (2024). Looking for a specific address? Look up your full postcode for the most accurate result.