Water hardness in Oradea
5.5 °dH moderately hard
Tap water in Oradea is moderately hard: 5.5 °dH (97 mg/L · 5.7 gpg · 9.7 °fH).
Source: Compania de Apă Oradea: Laborator Apă Potabilă, bulletin 05-08.10.2026 (2026-10) · data checked 2026-10-23
Range across supply zones: 91–104 mg/L.
6 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| str. 1848 | 5.8 | 104 | moderately hard |
| str. Feldioarei | 5.1 | 91 | moderately hard |
| str. Leonardo da Vinci | 5.5 | 98 | moderately hard |
| str. Louis Pasteur | 5.4 | 97 | moderately hard |
| str. Piata Decebal | 5.7 | 102 | moderately hard |
| str. Piatra Craiului | 5.2 | 92 | moderately hard |
Public supply in Romania combines surface water and groundwater, and hardness follows the local geology. The figure shown, 97.4 mg/L CaCO₃, is the median across 6 supply zones, which range from 91.0 to 104.2 mg/L, so it depends on which zone your street is in. Kettles and shower screens collect some limescale over time, and regular descaling is usually enough.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 5.5 °dH |
|---|---|
| Utility | Compania de Apă Oradea S.A. (CAO) |
How Oradea compares
- Tap water in Oradea is 67 % softer than the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 112 of 115 in Romania (1 = hardest); 3 % of these cities have softer water.
- Nearest city with clearly harder water: Arad, 106 km away (14.9 °dH).
Ranking of the hardest and softest water in Romania →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Oradea
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Oradea water hard or soft?
It is moderately hard: 97 mg/L as CaCO₃ (5.7 gpg, 5.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Oradea safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
How many grains per gallon is Oradea water?
5.7 gpg, equal to 5.5 °dH, 9.7 °fH or 97 mg/L calcium carbonate.
What dishwasher salt setting should I use in Oradea?
For 97 mg/L (5.5 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Oradea?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Compania de Apă Oradea: Laborator Apă Potabilă, bulletin 05-08.10.2026 (2026-10). Method: own measurement. Compania de Apă Oradea: Laborator Apă Potabilă, bulletin 05-08.10.2026 · Outdated figure? Tell us