Water hardness in Costineşti
15.3 °dH very hard
Tap water in Costineşti is very hard: 15.3 °dH (273 mg/L · 16 gpg · 27.3 °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 Costineşti in its 2026 table of average values (Ordonanța 7/2023) at 15.3 °dH. The table gives one value and no sampling month, so seasonal changes are not visible. Limescale will build up on kettles and heaters.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 15.3 °dH |
|---|---|
| Utility | RAJA S.A. Constanța |
How Costineşti compares
- Tap water in Costineşti is 6 % softer than the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 66 of 115 in Romania (1 = hardest); 42 % of these cities have softer water.
- Nearest city with clearly softer water: Cernavodă, 65 km away (12 °dH).
- Nearest city with clearly harder water: Topraisar, 16 km away (22.2 °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 Costineşti
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 15 °dH |
| AEG / Electrolux | 4 |
| Beko | 4th |
| Hoover | S2 |
| 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 Costineşti water hard or soft?
It is very hard: 273 mg/L as CaCO₃ (16 gpg, 15.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Costineşti 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 Costineşti water?
16 gpg, equal to 15.3 °dH, 27.3 °fH or 273 mg/L calcium carbonate.
What dishwasher salt setting should I use in Costineşti?
For 273 mg/L (15.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Costineşti?
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