Water hardness in Grapevine
6.8 gpg moderately hard
Tap water in Grapevine is moderately hard: 6.8 gpg (117 mg/L · 6.6 °dH · 11.7 °fH).
Source: City of Grapevine 2024 Water Quality Report (2024) · data checked 2026-10-29
The City of Grapevine's 2024 water quality report lists total hardness of 117 mg/L as CaCO3 (6.8 gpg), the same value for minimum and maximum. That puts the water in the moderately hard range. The 2024 report is the latest we located, so the figure may change once a newer one is published.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 6.8 gpg |
|---|---|
| Utility | City of Grapevine (water utility) |
How Grapevine compares
- Tap water in Grapevine is 25 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 923 of 1372 in the United States (1 = hardest); 32 % of these cities have softer water.
- In Texas it is number 45 of 60 cities; the regional median is 8.6 gpg.
- Nearest city with clearly harder water: Grand Prairie, 22 km away (9.9 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 Grapevine
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 7 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| 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 Grapevine water hard or soft?
It is moderately hard: 117 mg/L as CaCO₃ (6.8 gpg, 6.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Grapevine 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 Grapevine water?
6.8 gpg, equal to 6.6 °dH, 11.7 °fH or 117 mg/L calcium carbonate.
What dishwasher salt setting should I use in Grapevine?
For 117 mg/L (6.6 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Grapevine?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: City of Grapevine 2024 Water Quality Report (2024). Method: figure published by the water supplier. City of Grapevine 2024 Water Quality Report · Outdated figure? Tell us