Water hardness in Poço Verde
194 mg/L very hard
Tap water in Poço Verde is very hard: 194 mg/L (11.3 gpg · 10.9 °dH · 19.4 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Igua Sergipe Sa), CC BY-ND 3.0 (2025) · data checked 2026-10-20
Range across supply zones: 175–220 mg/L.
Poço Verde, in Sergipe, is supplied by Igua Sergipe Sa. The 2025 reported hardness is 193.9 mg/L as calcium carbonate, with a range of 175.2 to 220.0 mg/L. This counts as very hard, so scale on kettles, heaters and taps is likely.
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 | 194 mg/L |
|---|---|
| Utility | Igua Sergipe Sa |
How Poço Verde compares
- Tap water in Poço Verde is 356 % harder than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 34 of 1915 in Brazil (1 = hardest); 98 % of these cities have softer water.
- In Sergipe it is number 5 of 72 cities; the regional median is 44 mg/L.
- Nearest city with clearly softer water: Tobias Barreto, 32 km away (30 mg/L).
- Nearest city with clearly harder water: Santo Amaro das Brotas, 130 km away (297 mg/L).
Ranking of the hardest and softest water in Brazil →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Poço Verde
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Poço Verde water hard or soft?
It is very hard: 194 mg/L as CaCO₃ (11.3 gpg, 10.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Poço Verde 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 Poço Verde water?
11.3 gpg, equal to 10.9 °dH, 19.4 °fH or 194 mg/L calcium carbonate.
What dishwasher salt setting should I use in Poço Verde?
For 194 mg/L (10.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Poço Verde?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Igua Sergipe Sa), CC BY-ND 3.0 (2025). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Igua Sergipe Sa), CC BY-ND 3.0 · Outdated figure? Tell us