Water hardness in Fontoura Xavier
43 mg/L soft
Tap water in Fontoura Xavier is soft: 43 mg/L (2.5 gpg · 2.4 °dH · 4.3 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia Riograndense De Saneamento), CC BY-ND 3.0 (2026) · data checked 2026-10-20
Range across supply zones: 17–49 mg/L.
Tap water in Fontoura Xavier, Rio Grande do Sul, is supplied by Companhia Riograndense De Saneamento. The published figure is 42.9 milligrams per litre of calcium carbonate (soft), with readings from 17.1 to 49.4. Source: Ministry of Health SISAGUA semiannual control data, 2026; it does not state the water source.
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 | 43 mg/L |
|---|---|
| Utility | Companhia Riograndense De Saneamento |
How Fontoura Xavier compares
- Tap water in Fontoura Xavier is close to the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 952 of 1915 in Brazil (1 = hardest); 50 % of these cities have softer water.
- In Rio Grande do Sul it is number 179 of 244 cities; the regional median is 60 mg/L.
- Nearest city with clearly softer water: Soledade, 23 km away (29 mg/L).
- Nearest city with clearly harder water: Putinga, 20 km away (84 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 Fontoura Xavier
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 2 °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 Fontoura Xavier water hard or soft?
It is soft: 43 mg/L as CaCO₃ (2.5 gpg, 2.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Fontoura Xavier 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 Fontoura Xavier water?
2.5 gpg, equal to 2.4 °dH, 4.3 °fH or 43 mg/L calcium carbonate.
What dishwasher salt setting should I use in Fontoura Xavier?
For 43 mg/L (2.4 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Fontoura Xavier?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia Riograndense De Saneamento), CC BY-ND 3.0 (2026). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Companhia Riograndense De Saneamento), CC BY-ND 3.0 · Outdated figure? Tell us