Water hardness in Cerqueira César
20 mg/L soft
Tap water in Cerqueira César is soft: 20 mg/L (1.2 gpg · 1.1 °dH · 2 °fH).
Source: Ministério da Saúde, SISAGUA – controle semestral (Dae), CC BY-ND 3.0 (2026) · data checked 2026-10-20
Range across supply zones: 11–48 mg/L.
Cerqueira César, in São Paulo state, is supplied by Dae. Reported hardness is 19.7 milligrams per litre as calcium carbonate, which is soft, with readings from 10.8 to 48.3. The figure comes from the Ministry of Health's 2026 data, and all readings stay in the soft band.
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 | 20 mg/L |
|---|---|
| Utility | Dae |
How Cerqueira César compares
- Tap water in Cerqueira César is 54 % softer than the median of the 1915 cities we track in Brazil (43 mg/L).
- By hardness it ranks 1579 of 1915 in Brazil (1 = hardest); 18 % of these cities have softer water.
- In São Paulo it is number 435 of 530 cities; the regional median is 42 mg/L.
- Nearest city with clearly softer water: Arandu, 16 km away (6 mg/L).
- Nearest city with clearly harder water: Manduri, 20 km away (29 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 Cerqueira César
| 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 Cerqueira César water hard or soft?
It is soft: 20 mg/L as CaCO₃ (1.2 gpg, 1.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Cerqueira César 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 Cerqueira César water?
1.2 gpg, equal to 1.1 °dH, 2 °fH or 20 mg/L calcium carbonate.
What dishwasher salt setting should I use in Cerqueira César?
For 20 mg/L (1.1 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Cerqueira César?
No. With soft water a softener adds nothing.
Source
Source: Ministério da Saúde, SISAGUA – controle semestral (Dae), CC BY-ND 3.0 (2026). Method: figure published by the water supplier. Ministério da Saúde, SISAGUA – controle semestral (Dae), CC BY-ND 3.0 · Outdated figure? Tell us