Water hardness in Paraúna
7 mg/L soft
Tap water in Paraúna is soft: 7 mg/L (0.4 gpg · 0.4 °dH · 0.7 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Saneamento De Goias Sa), CC BY-ND 3.0 (2025) · data checked 2026-10-20
Range across supply zones: 6–16 mg/L.
Tap water in Paraúna, Goiás, is supplied by Saneamento De Goias Sa. The published figure is 7.0 milligrams per litre of calcium carbonate (soft), with readings from 6.0 to 16.0. 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 | 7 mg/L |
|---|---|
| Utility | Saneamento De Goias Sa |
How Paraúna compares
- Tap water in Paraúna is 84 % softer than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 1874 of 1915 in Brazil (1 = hardest); 2 % of these cities have softer water.
- In Goiás it is number 131 of 131 cities; the regional median is 41 mg/L.
- Nearest city with clearly harder water: São João da Paraúna, 40 km away (36 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 Paraúna
| 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 Paraúna water hard or soft?
It is soft: 7 mg/L as CaCO₃ (0.4 gpg, 0.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Paraúna 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 Paraúna water?
0.4 gpg, equal to 0.4 °dH, 0.7 °fH or 7 mg/L calcium carbonate.
What dishwasher salt setting should I use in Paraúna?
For 7 mg/L (0.4 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Paraúna?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Saneamento De Goias Sa), CC BY-ND 3.0 (2025). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Saneamento De Goias Sa), CC BY-ND 3.0 · Outdated figure? Tell us