Tap Water in TN29
Denge — Affinity Water
Tap water in Denge, supplied by Affinity Water, has the character of a coastal-influenced source, with chloride levels reflecting proximity to the sea. It’s moderately soft, in the lower end of the national range, with a total hardness of 108 mg/L as CaCO₃.
Mineral composition
| mg/L | |
|---|---|
| Calcium | 43 |
| Magnesium | 0 |
| Sodium | 32 |
| Sulfate | 11 |
| Chloride | 52 |
| Bicarbonate | 123 |
Additional info
| Hardness | 108 as CaCO₃ |
| Alkalinity | 100.8 as CaCO₃ |
| pH | 7.7 |
| Conductivity | awaiting data |
| Source | Affinity Water |
| Data year | 2024 |
What this means
Kettle & appliances
Some light mineral residue may appear in kettles over time, but significant limescale buildup is unlikely. No treatment needed for most appliances.
Espresso
A good range for espresso. Enough mineral content to provide body and balance acidity without posing a real scale risk to the machine. Most specialty coffee water targets fall in or near this band.
Filter & pour-over
Excellent for filter brewing. The slight mineral content adds body and sweetness without masking acidity, giving a balanced cup across most roast levels. This is close to the SCA’s recommended range for brewed coffee.
Drinking & cooking
Tastes clean with a slight mineral presence. Good all-round water for cooking; it won’t interfere with delicate flavours or leave noticeable deposits.
Bicarbonate
The buffering starts to become assertive: darker beer styles (porters, milds, brown ales) benefit from this level as it supports higher mash pH, but espresso will begin losing some of its brighter acidity, producing a rounder, heavier cup that flatters darker roasts while muting lighter ones.
Get the best from your water
TN29 tap water works well for espresso, baking, aquarium use, tea, and horticulture with little or no adjustment. Brewing is within reach with salt additions.
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Data sourced from Affinity Water (2024). Looking for a specific address? Look up your full postcode for the most accurate result.