Grapevine Water Hardness & Quality Report (2026)
Water Hardness
17.6 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
831.9 mg/L
Est. Daily Cost
$0.81
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Grapevine, your appliances are currently losing 40% efficiency due to mineral buildup.
| Appliance | In Grapevine | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Grapevine compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Grapevine, Texas | 302 mg/L | 9.5 ppt | 🔴 Very Hard | mixed |
| Southlake, Texas | 308 mg/L | 9.6 ppt | 🔴 Very Hard | mixed |
| Coppell, Texas | 154.5 mg/L | 6.3 ppt | 🟠 Hard | mixed |
| Flower Mound, Texas | 244.5 mg/L | 8.2 ppt | 🔴 Very Hard | mixed |
| Colleyville, Texas | 418.5 mg/L | 11.9 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Grapevine compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Grapevine | 302 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Grapevine's Water Unique?
Local geology and source profile
Grapevine, Texas, in Tarrant County on Lake Grapevine adjacent to DFW International Airport — a major DFW Metroplex tourism and retail destination known for Historic Downtown Grapevine, Grapevine Mills Mall, the LEGOLAND Discovery Center, and as the 'Christmas Capital of Texas' — draws its municipal water supply from Lake Grapevine and Lake Bridgeport via the Tarrant Regional Water District and the City of Grapevine Public Works Water Division. Water hardness in Grapevine measures 302 mg/L — classified as very hard.
Grapevine's very hard supply reflects the Lake Grapevine watershed's concentrated Cretaceous calcareous geology. The Denton Creek and Grapevine Creek watershed above Lake Grapevine drains: the Cross Timbers Cretaceous calcareous formations — Cretaceous Austin Chalk (highly soluble Cretaceous calcareous chalk — one of the most soluble calcareous formations in Texas, cropping out across the DFW Metroplex); the Cretaceous Eagle Ford Shale (calcareous marine shale contributing dissolved calcium); and the Cretaceous Woodbine Sandstone (calcareous sandstone of the East Texas basin margin). The highly soluble Austin Chalk and calcareous Cretaceous terrain produce the very hard 302 mg/L at Grapevine.
At 302 mg/L, Grapevine residents face severe hard water challenges. Scale deposits form very rapidly on all fixtures and appliances — weekly descaling and appliance protection measures are strongly recommended. City of Grapevine Public Works Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Surface water from the Tarrant Regional Water District (Lake Grapevine and Lake Bridgeport) via the City of Grapevine Public Works Water Division — the Tarrant County Lake Grapevine tributary (Cretaceous Austin Chalk and Eagle Ford Shale calcareous terrain at the DFW airport corridor); very hard supply at 302 mg/L — reflecting the concentrated Cretaceous calcareous Trinity-Grapevine watershed supply.