Water hardness in Isaccea
15 °dH very hard
Tap water in Isaccea is very hard: 15 °dH (268 mg/L · 15.7 gpg · 26.8 °fH).
Source: S.C. Aquaserv S.A. Tulcea, Monitorizare de control 2026, rezultate analize apa potabila judet, Septembrie 2026 (2026-09) · data checked 2026-10-29
Range across supply zones: 146–268 mg/L.
Aquaserv Tulcea's September 2026 county bulletin gives two readings for Isaccea on 2 September: 15.03 °dH in the network and 8.19 °dH at the reservoir. We show the network value, since that is what reaches the tap, and keep the reservoir figure as the lower end of the range. The two differ strongly and the bulletin does not explain why, so treat the figure as indicative.
Romanian operators report "duritate totală" in German degrees (grade germane); the minimum is 5 °dH.
Water data
| Total hardness | 15 °dH |
|---|---|
| Utility | S.C. Aquaserv S.A. Tulcea |
How Isaccea compares
- Tap water in Isaccea is 8 % softer than the median of the 115 cities we track in Romania (16.3 °dH).
- By hardness it ranks 68 of 115 in Romania (1 = hardest); 41 % of these cities have softer water.
- In Tulcea it is number 2 of 4 cities; the regional median is 12.8 °dH.
- Nearest city with clearly softer water: Măcin, 26 km away (10.6 °dH).
- Nearest city with clearly harder water: Babadag, 45 km away (20.6 °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 Isaccea
| 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 Isaccea water hard or soft?
It is very hard: 268 mg/L as CaCO₃ (15.7 gpg, 15 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Isaccea 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 Isaccea water?
15.7 gpg, equal to 15 °dH, 26.8 °fH or 268 mg/L calcium carbonate.
What dishwasher salt setting should I use in Isaccea?
For 268 mg/L (15 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Isaccea?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: S.C. Aquaserv S.A. Tulcea, Monitorizare de control 2026, rezultate analize apa potabila judet, Septembrie 2026 (2026-09). Method: own measurement. S.C. Aquaserv S.A. Tulcea, Monitorizare de control 2026, rezultate analize apa potabila judet, Septembrie 2026 · Outdated figure? Tell us