Water hardness in São Félix do Araguaia
9 mg/L soft
Tap water in São Félix do Araguaia is soft: 9 mg/L (0.5 gpg · 0.5 °dH · 0.9 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Prefeitura Municipal Sao Felix Do Araguaia), CC BY-ND 3.0 (2025) · data checked 2026-10-20
In São Félix do Araguaia, Mato Grosso, water is supplied by Prefeitura Municipal Sao Felix Do Araguaia. The reported hardness is 9.0 milligrams per litre as calcium carbonate, which is soft. The figure comes from the 2025 Ministry of Health semiannual control data, and no range was published.
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 | 9 mg/L |
|---|---|
| Utility | Prefeitura Municipal Sao Felix Do Araguaia |
How São Félix do Araguaia compares
- Tap water in São Félix do Araguaia is 79 % softer than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 1832 of 1915 in Brazil (1 = hardest); 4 % of these cities have softer water.
- In Mato Grosso it is number 44 of 46 cities; the regional median is 30 mg/L.
- Nearest city with clearly harder water: Querência, 107 km away (50 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 São Félix do Araguaia
| 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 São Félix do Araguaia water hard or soft?
It is soft: 9 mg/L as CaCO₃ (0.5 gpg, 0.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in São Félix do Araguaia 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 São Félix do Araguaia water?
0.5 gpg, equal to 0.5 °dH, 0.9 °fH or 9 mg/L calcium carbonate.
What dishwasher salt setting should I use in São Félix do Araguaia?
For 9 mg/L (0.5 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in São Félix do Araguaia?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Prefeitura Municipal Sao Felix Do Araguaia), CC BY-ND 3.0 (2025). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Prefeitura Municipal Sao Felix Do Araguaia), CC BY-ND 3.0 · Outdated figure? Tell us