Water hardness in Cobadin
16.9 °dH very hard
Tap water in Cobadin is very hard: 16.9 °dH (302 mg/L · 17.6 gpg · 30.2 °fH).
Source: RAJA S.A. Constanța, Indicatori fizico-chimici ai apei potabile (OG 7/2023), valori medii 2026 (2026) · data checked 2026-10-29
RAJA S.A. Constanța lists Cobadin in its 2026 table of average values (Ordonanța 7/2023) at 16.9 °dH. The table gives one value for the locality and no range. Limescale on kettles and water heaters is the main everyday effect.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 16.9 °dH |
|---|---|
| Utility | RAJA S.A. Constanța |
How Cobadin compares
- Tap water in Cobadin is close to the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 52 of 115 in Romania (1 = hardest); 55 % of these cities have softer water.
- Nearest city with clearly softer water: Nisipari, 24 km away (12.5 °dH).
- Nearest city with clearly harder water: Siminoc, 14 km away (21.5 °dH).
Ranking of the hardest and softest water in Romania →
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 Cobadin
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °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 Cobadin water hard or soft?
It is very hard: 302 mg/L as CaCO₃ (17.6 gpg, 16.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Cobadin 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 Cobadin water?
17.6 gpg, equal to 16.9 °dH, 30.2 °fH or 302 mg/L calcium carbonate.
What dishwasher salt setting should I use in Cobadin?
For 302 mg/L (16.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Cobadin?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: RAJA S.A. Constanța, Indicatori fizico-chimici ai apei potabile (OG 7/2023), valori medii 2026 (2026). Method: figure published by the water supplier. RAJA S.A. Constanța, Indicatori fizico-chimici ai apei potabile (OG 7/2023), valori medii 2026 · Outdated figure? Tell us