Water hardness in Chełm
399 mg/L very hard
Tap water in Chełm is very hard: 399 mg/L (23.3 gpg · 22.3 °dH · 39.9 °fH).
Source: MPGK Chełm – średnie wyniki analiz III kwartał 2026 (2026) · data checked 2026-10-29
Range across supply zones: 386–411 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| Ujęcie Bariera | 411 | 411 | very hard |
| Ujęcie Trubaków | 386 | 386 | very hard |
MPGK Chełm reports an average of 398.5 mg/L CaCO₃ for the third quarter of 2026, one of the harder results in this batch. The two zones range from 386 to 411 mg/L. Water at this level leaves scale quickly on heaters and fixtures. The quarterly report is a table of results and does not describe the source, so we do not assign one.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 399 mg/L |
|---|---|
| Utility | MPGK Sp. z o.o. Chełm |
How Chełm compares
- Tap water in Chełm is 63 % harder than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 5 of 91 in Poland (1 = hardest); 96 % of these cities have softer water.
- In lubelskie it is number 1 of 4 cities; the regional median is 303 mg/L.
- Nearest city with clearly softer water: Kraśnik, 90 km away (266 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 Chełm
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 22 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| 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 Chełm water hard or soft?
It is very hard: 399 mg/L as CaCO₃ (23.3 gpg, 22.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Chełm 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 Chełm water?
23.3 gpg, equal to 22.3 °dH, 39.9 °fH or 399 mg/L calcium carbonate.
What dishwasher salt setting should I use in Chełm?
For 399 mg/L (22.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Chełm?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: MPGK Chełm – średnie wyniki analiz III kwartał 2026 (2026). Method: figure published by the water supplier. MPGK Chełm – średnie wyniki analiz III kwartał 2026 · Outdated figure? Tell us