Water hardness in Heist-op-den-Berg
23.9 °fH very hard
Tap water in Heist-op-den-Berg is very hard: 23.9 °fH (239 mg/L · 13.9 gpg · 13.4 °dH).
Source: VMM, Kwaliteit van het drinkwater per leveringsgebied 2024, bijlage 2 (mediane concentratie) (2024) · data checked 2026-10-19
Range across supply zones: 189–288 mg/L.
De Watergroep and Pidpa supply this part of the Campine, a sandy region where lime is largely absent from the aquifers, so groundwater here tends to be softer than elsewhere in Belgium; some Flemish supply also comes from Albert Canal surface water. The 2024 figure is 238.7 mg/L CaCO₃, within a reported range of 189.4 to 288.1 mg/L, which reflects the different supply areas that serve the town. This is very hard water: expect heavy limescale on taps, glass and heating elements, and higher detergent and descaling needs.
Belgian suppliers report hardness in °f (French degrees); 1 °f = 10 mg/L CaCO₃.
Water data
| Total hardness | 23.9 °fH |
|---|---|
| Utility | De Watergroep, Pidpa |
How Heist-op-den-Berg compares
- Tap water in Heist-op-den-Berg is 24 % softer than the median of the 1091 cities we track in Belgium (31.6 °fH).
- By hardness it ranks 704 of 1091 in Belgium (1 = hardest); 36 % of these cities have softer water.
- In Antwerpen it is number 1 of 65 cities; the regional median is 17.4 °fH.
- Nearest city with clearly softer water: Hulshout, 4 km away (18.9 °fH).
- Nearest city with clearly harder water: Kampenhout, 19 km away (32.5 °fH).
Ranking of the hardest and softest water in Belgium →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Heist-op-den-Berg
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| Hoover | S2 |
| LG | H2 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Heist-op-den-Berg water hard or soft?
It is very hard: 239 mg/L as CaCO₃ (13.9 gpg, 13.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Heist-op-den-Berg safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Belgian suppliers report hardness in °f (French degrees); 1 °f = 10 mg/L CaCO₃.
How many grains per gallon is Heist-op-den-Berg water?
13.9 gpg, equal to 13.4 °dH, 23.9 °fH or 239 mg/L calcium carbonate.
What dishwasher salt setting should I use in Heist-op-den-Berg?
For 239 mg/L (13.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Heist-op-den-Berg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: VMM, Kwaliteit van het drinkwater per leveringsgebied 2024, bijlage 2 (mediane concentratie) (2024). Method: figure published by the water supplier. VMM, Kwaliteit van het drinkwater per leveringsgebied 2024, bijlage 2 (mediane concentratie) · Outdated figure? Tell us