Water hardness in Madre de Deus
68 mg/L moderately hard
Tap water in Madre de Deus is moderately hard: 68 mg/L (4 gpg · 3.8 °dH · 6.8 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Empresa Baiana De Aguas E Saneamento Sa), CC BY-ND 3.0 (2026) · data checked 2026-10-20
Range across supply zones: 66–70 mg/L.
Madre de Deus, in Bahia, is served by Empresa Baiana De Aguas E Saneamento Sa. Reported hardness is 68.0 milligrams per litre as calcium carbonate, which is moderate, and readings are tightly grouped between 66.3 and 69.7. The data is from the Ministry of Health's 2026 reporting.
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 | 68 mg/L |
|---|---|
| Utility | Empresa Baiana De Aguas E Saneamento Sa |
How Madre de Deus compares
- Tap water in Madre de Deus is 60 % harder than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 498 of 1915 in Brazil (1 = hardest); 74 % of these cities have softer water.
- In Bahia it is number 72 of 148 cities; the regional median is 66 mg/L.
- Nearest city with clearly softer water: Salinas da Margarida, 25 km away (34 mg/L).
- Nearest city with clearly harder water: Saubara, 19 km away (92 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 Madre de Deus
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °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 Madre de Deus water hard or soft?
It is moderately hard: 68 mg/L as CaCO₃ (4 gpg, 3.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Madre de Deus 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 Madre de Deus water?
4 gpg, equal to 3.8 °dH, 6.8 °fH or 68 mg/L calcium carbonate.
What dishwasher salt setting should I use in Madre de Deus?
For 68 mg/L (3.8 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Madre de Deus?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Empresa Baiana De Aguas E Saneamento Sa), CC BY-ND 3.0 (2026). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Empresa Baiana De Aguas E Saneamento Sa), CC BY-ND 3.0 · Outdated figure? Tell us