Water hardness in Ananindeua
153 mg/L hard
Tap water in Ananindeua is hard: 153 mg/L (8.9 gpg · 8.6 °dH · 15.3 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento Do Para), CC BY-ND 3.0 (2025) · data checked 2026-10-20
Range across supply zones: 82–176 mg/L.
Ananindeua is supplied from the Utinga system of the Bolonha and Água Preta lakes in the Belém area, which surface water alone cannot cover, so groundwater is used to supplement it. Records for 2025 give a median of 153.0 mg/L CaCO₃, with individual results from 82.0 to 176.0 mg/L. Scale will build up on kettles, heaters and shower screens, so regular descaling is worthwhile.
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 | 153 mg/L |
|---|---|
| Utility | Companhia De Saneamento Do Para |
How Ananindeua compares
- Tap water in Ananindeua is 260 % harder than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 64 of 1915 in Brazil (1 = hardest); 97 % of these cities have softer water.
- In Pará it is number 3 of 7 cities; the regional median is 149 mg/L.
- Nearest city with clearly softer water: Curuçá, 92 km away (18 mg/L).
- Nearest city with clearly harder water: Marituba, 8 km away (195 mg/L).
Ranking of the hardest and softest water in Brazil →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Ananindeua
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Ananindeua water hard or soft?
It is hard: 153 mg/L as CaCO₃ (8.9 gpg, 8.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Ananindeua 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 Ananindeua water?
8.9 gpg, equal to 8.6 °dH, 15.3 °fH or 153 mg/L calcium carbonate.
What dishwasher salt setting should I use in Ananindeua?
For 153 mg/L (8.6 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Ananindeua?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento Do Para), CC BY-ND 3.0 (2025). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Companhia De Saneamento Do Para), CC BY-ND 3.0 · Outdated figure? Tell us