Water hardness in Cojasca
14.4 °dH very hard
Tap water in Cojasca is very hard: 14.4 °dH (256 mg/L · 15 gpg · 25.6 °fH).
Source: Compania de Apă Târgoviște-Dâmbovița, situația centralizată a parametrilor monitorizați, 2026-09 (2026-09) · data checked 2026-10-29
Compania de Apă Târgoviște-Dâmbovița reports 14.36 °dH for Cojasca from one sampling on 7 September 2026. The table gives no range for the locality, so other points may differ. Kettles and shower screens will collect limescale over time.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 14.4 °dH |
|---|---|
| Utility | Compania de Apă Târgoviște-Dâmbovița S.A. |
How Cojasca compares
- Tap water in Cojasca is 12 % softer than the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 76 of 115 in Romania (1 = hardest); 34 % of these cities have softer water.
- In Dâmbovița it is number 7 of 21 cities; the regional median is 11 °dH.
- Nearest city with clearly softer water: Răcari, 13 km away (11 °dH).
- Nearest city with clearly harder water: Lucieni, 36 km away (18.7 °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 Cojasca
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| 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 Cojasca water hard or soft?
It is very hard: 256 mg/L as CaCO₃ (15 gpg, 14.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Cojasca 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 Cojasca water?
15 gpg, equal to 14.4 °dH, 25.6 °fH or 256 mg/L calcium carbonate.
What dishwasher salt setting should I use in Cojasca?
For 256 mg/L (14.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Cojasca?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Compania de Apă Târgoviște-Dâmbovița, situația centralizată a parametrilor monitorizați, 2026-09 (2026-09). Method: own measurement. Compania de Apă Târgoviște-Dâmbovița, situația centralizată a parametrilor monitorizați, 2026-09 · Outdated figure? Tell us