Water hardness in Palmares do Sul
82 mg/L moderately hard
Tap water in Palmares do Sul is moderately hard: 82 mg/L (4.8 gpg · 4.6 °dH · 8.2 °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: 14–134 mg/L.
Tap water in Palmares do Sul, Rio Grande do Sul, is supplied by Companhia Riograndense De Saneamento. The published figure is 81.9 milligrams per litre of calcium carbonate (moderate), with readings from 14.4 to 133.9, so hardness varies between samples. 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 | 82 mg/L |
|---|---|
| Utility | Companhia Riograndense De Saneamento |
How Palmares do Sul compares
- Tap water in Palmares do Sul is 93 % harder than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 341 of 1915 in Brazil (1 = hardest); 82 % of these cities have softer water.
- In Rio Grande do Sul it is number 71 of 244 cities; the regional median is 60 mg/L.
- Nearest city with clearly softer water: Capivari do Sul, 21 km away (62 mg/L).
- Nearest city with clearly harder water: Balneário Pinhal, 23 km away (118 mg/L).
Ranking of the hardest and softest water in Brazil →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Palmares do Sul
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
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 Palmares do Sul water hard or soft?
It is moderately hard: 82 mg/L as CaCO₃ (4.8 gpg, 4.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Palmares do Sul 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 Palmares do Sul water?
4.8 gpg, equal to 4.6 °dH, 8.2 °fH or 82 mg/L calcium carbonate.
What dishwasher salt setting should I use in Palmares do Sul?
For 82 mg/L (4.6 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Palmares do Sul?
Not essential; a scale inhibitor protects the heater cheaply.
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