Water hardness in Lublin
326 mg/L very hard
Tap water in Lublin is very hard: 326 mg/L (19 gpg · 18.3 °dH · 32.6 °fH).
Source: MPWiK Lublin: Twardość wody, wartości średnie IV kwartał 2025 (2025-12) · data checked 2026-10-21
Range across supply zones: 286–392 mg/L.
7 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| Bursaki | 392 | 392 | very hard |
| Centralna | 307 | 307 | very hard |
| Choiny | 326 | 326 | very hard |
| Ruta | 326 | 326 | very hard |
| Wrotków | 286 | 286 | very hard |
| Zemborzycka – Dziesiąta | 353 | 353 | very hard |
| Zemborzycka – Sławinek | 392 | 392 | very hard |
MPWiK Lublin publishes quarterly averages for seven supply zones. For the fourth quarter of 2025 they run from 286 mg/L CaCO₃ in Wrotków to 392 mg/L in Sławinek and Bursaki, with a city median of 326 mg/L. Water here is very hard in every zone. Look up your zone on the utility page, because the gap between zones is more than 100 mg/L.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 326 mg/L |
|---|---|
| Utility | Miejskie Przedsiębiorstwo Wodociągów i Kanalizacji w Lublinie (MPWiK Lublin) |
How Lublin compares
- Tap water in Lublin is 33 % harder than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 11 of 91 in Poland (1 = hardest); 89 % of these cities have softer water.
- In lubelskie it is number 2 of 4 cities; the regional median is 303 mg/L.
- Nearest city with clearly softer water: Stalowa Wola, 83 km away (130 mg/L).
Ranking of the hardest and softest water in Poland →
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 Lublin
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °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 Lublin water hard or soft?
It is very hard: 326 mg/L as CaCO₃ (19 gpg, 18.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Lublin safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
How many grains per gallon is Lublin water?
19 gpg, equal to 18.3 °dH, 32.6 °fH or 326 mg/L calcium carbonate.
What dishwasher salt setting should I use in Lublin?
For 326 mg/L (18.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Lublin?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: MPWiK Lublin: Twardość wody, wartości średnie IV kwartał 2025 (2025-12). Method: figure published by the water supplier. MPWiK Lublin: Twardość wody, wartości średnie IV kwartał 2025 · Outdated figure? Tell us