Water hardness in Resende Costa
26 mg/L soft
Tap water in Resende Costa is soft: 26 mg/L (1.5 gpg · 1.4 °dH · 2.6 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento De Minas Gerais), CC BY-ND 3.0 (2025) · data checked 2026-10-20
Tap water in Resende Costa, Minas Gerais, is supplied by Companhia De Saneamento De Minas Gerais. The published figure is 25.8 milligrams per litre of calcium carbonate (soft). The data gives a single value and no range. Source: Ministry of Health SISAGUA semiannual control data, 2025; 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 | 26 mg/L |
|---|---|
| Utility | Companhia De Saneamento De Minas Gerais |
How Resende Costa compares
- Tap water in Resende Costa is 39 % softer than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 1418 of 1915 in Brazil (1 = hardest); 26 % of these cities have softer water.
- In Minas Gerais it is number 206 of 290 cities; the regional median is 41 mg/L.
- Nearest city with clearly softer water: Desterro de Entre Rios, 22 km away (11 mg/L).
- Nearest city with clearly harder water: Coronel Xavier Chaves, 21 km away (61 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 Resende Costa
| 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 Resende Costa water hard or soft?
It is soft: 26 mg/L as CaCO₃ (1.5 gpg, 1.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Resende Costa 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 Resende Costa water?
1.5 gpg, equal to 1.4 °dH, 2.6 °fH or 26 mg/L calcium carbonate.
What dishwasher salt setting should I use in Resende Costa?
For 26 mg/L (1.4 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Resende Costa?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento De Minas Gerais), CC BY-ND 3.0 (2025). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento De Minas Gerais), CC BY-ND 3.0 · Outdated figure? Tell us