Water hardness in Sombrio
21 mg/L soft
Tap water in Sombrio is soft: 21 mg/L (1.2 gpg · 1.2 °dH · 2.1 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Sombrio Saneamento Spe Sa), CC BY-ND 3.0 (2026) · data checked 2026-10-20
Range across supply zones: 17–26 mg/L.
Sombrio, in Santa Catarina, is served by Sombrio Saneamento Spe Sa. The 2026 Ministério da Saúde data report 20.8 milligrams per litre as calcium carbonate, with samples from 16.7 to 25.7, which is soft.
Portaria GM/MS nº 888/2021 sets a maximum of 300 mg/L CaCO₃ for total hardness (dureza total); operators report it in mg/L to SISAGUA.
Water data
| Total hardness | 21 mg/L |
|---|---|
| Utility | Sombrio Saneamento Spe Sa |
How Sombrio compares
- Tap water in Sombrio is 51 % softer than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 1549 of 1915 in Brazil (1 = hardest); 19 % of these cities have softer water.
- In Santa Catarina it is number 164 of 238 cities; the regional median is 34 mg/L.
- Nearest city with clearly softer water: Jacinto Machado, 21 km away (16 mg/L).
- Nearest city with clearly harder water: Balneário Gaivota, 9 km away (30 mg/L).
Ranking of the hardest and softest water in Brazil →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Sombrio
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 1 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Sombrio water hard or soft?
It is soft: 21 mg/L as CaCO₃ (1.2 gpg, 1.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sombrio safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Portaria GM/MS nº 888/2021 sets a maximum of 300 mg/L CaCO₃ for total hardness (dureza total); operators report it in mg/L to SISAGUA.
How many grains per gallon is Sombrio water?
1.2 gpg, equal to 1.2 °dH, 2.1 °fH or 21 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sombrio?
For 21 mg/L (1.2 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Sombrio?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Sombrio Saneamento Spe Sa), CC BY-ND 3.0 (2026). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Sombrio Saneamento Spe Sa), CC BY-ND 3.0 · Outdated figure? Tell us