Water hardness in Siliştea
29.2 °dH very hard
Tap water in Siliştea is very hard: 29.2 °dH (521 mg/L · 30.4 gpg · 52.1 °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 Siliştea in its 2026 table of average values (Ordonanța 7/2023) at 29.2 °dH, which is above 500 mg/L CaCO₃. The figure was checked against the printed calcium and magnesium values and approved on audit. The table gives one value and does not name the source. Expect heavy limescale on every appliance that heats water.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 29.2 °dH |
|---|---|
| Utility | RAJA S.A. Constanța |
How Siliştea compares
- Tap water in Siliştea is 79 % harder than the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 5 of 115 in Romania (1 = hardest); 96 % of these cities have softer water.
- Nearest city with clearly softer water: Cernavodă, 13 km away (12 °dH).
- Nearest city with clearly harder water: Tortoman, 7 km away (44.7 °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 Siliştea
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 29 °dH |
| AEG / Electrolux | 7 |
| Beko | 6th |
| Hoover | S4 |
| LG | H4 |
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 Siliştea water hard or soft?
It is very hard: 521 mg/L as CaCO₃ (30.4 gpg, 29.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Siliştea 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 Siliştea water?
30.4 gpg, equal to 29.2 °dH, 52.1 °fH or 521 mg/L calcium carbonate.
What dishwasher salt setting should I use in Siliştea?
For 521 mg/L (29.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Siliştea?
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