Water hardness in Boca Raton
4.2 gpg moderately hard
Tap water in Boca Raton is moderately hard: 4.2 gpg (73 mg/L · 4.1 °dH · 7.3 °fH).
Source: City of Boca Raton Water Quality Statistics (city website table) (2025) · data checked 2026-10-19
Range across supply zones: 65–80 mg/L.
The City of Boca Raton's water quality page lists total hardness as CaCO3 of 65 to 80 mg/L (3.8 to 4.7 gpg) and no average. The 72.5 mg/L (4.2 gpg) on this page is the midpoint and is computed. The table is undated, though the page points to the 2025 annual report. That is moderately hard water. Scale builds slowly.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 4.2 gpg |
|---|---|
| Utility | City of Boca Raton Utility Services |
How Boca Raton compares
- Tap water in Boca Raton is 53 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 1141 of 1372 in the United States (1 = hardest); 17 % of these cities have softer water.
- In Florida it is number 16 of 17 cities; the regional median is 8.2 gpg.
Ranking of the hardest and softest water in the United States →
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 Boca Raton
| 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 Boca Raton water hard or soft?
It is moderately hard: 73 mg/L as CaCO₃ (4.2 gpg, 4.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Boca Raton safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
How many grains per gallon is Boca Raton water?
4.2 gpg, equal to 4.1 °dH, 7.3 °fH or 73 mg/L calcium carbonate.
What dishwasher salt setting should I use in Boca Raton?
For 73 mg/L (4.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Boca Raton?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: City of Boca Raton Water Quality Statistics (city website table) (2025). Method: computed from supplier's calcium and magnesium. City of Boca Raton Water Quality Statistics (city website table) · Outdated figure? Tell us