Water hardness in Szenna
18.1 °dH very hard
Tap water in Szenna is very hard: 18.1 °dH (323 mg/L · 18.9 gpg · 32.3 °fH).
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024) · data checked 2026-10-21
Szenna, in Somogy county, is reported at 323.0 mg/L CaCO₃ in the 2024 NNGYK data, a very hard result. The report does not identify the local supply. Scale on hot-water appliances and glass surfaces is the practical consequence.
Hungarian suppliers report total hardness in German degrees (nk°) or mg/L CaO; the limit is 50–350 mg/L CaO.
Water data
| Total hardness | 18.1 °dH |
|---|
How Szenna compares
- Tap water in Szenna is 12 % harder than the median of the 3053 cities we track in Hungary (16.1 °dH).
- By hardness it ranks 1151 of 3053 in Hungary (1 = hardest); 62 % of these cities have softer water.
- In Somogy it is number 137 of 240 cities; the regional median is 19.1 °dH.
- Nearest city with clearly softer water: Cserénfa, 11 km away (4.9 °dH).
- Nearest city with clearly harder water: Simonfa, 8 km away (22.9 °dH).
Ranking of the hardest and softest water in Hungary →
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 Szenna
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| LG | H3 |
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 Szenna water hard or soft?
It is very hard: 323 mg/L as CaCO₃ (18.9 gpg, 18.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Szenna safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Hungarian suppliers report total hardness in German degrees (nk°) or mg/L CaO; the limit is 50–350 mg/L CaO.
How many grains per gallon is Szenna water?
18.9 gpg, equal to 18.1 °dH, 32.3 °fH or 323 mg/L calcium carbonate.
What dishwasher salt setting should I use in Szenna?
For 323 mg/L (18.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Szenna?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) (2024). Method: figure published by the water supplier. NNGYK — Magyarországi települések ivóvízminősége (HUMVI 2024) · Outdated figure? Tell us