Coppell Water Hardness & Quality Report (2026)
Water Hardness
9 grains per gallon
Source
mixed
pH Level
7.9
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
351.6 mg/L
Est. Daily Cost
$0.41
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 Coppell, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Coppell | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.5 yrs | 8.5 yrs | -47% |
| Washing Machine | 7.9 yrs | 12 yrs | -34% |
| Water Heater | 9.4 yrs | 15 yrs | -37% |
Regional Water Comparison
How Coppell compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Coppell, Texas | 154.5 mg/L | 6.3 ppt | 🟠 Hard | mixed |
| Grapevine, Texas | 302 mg/L | 9.5 ppt | 🔴 Very Hard | mixed |
| Lewisville, Texas | 99.5 mg/L | 5.2 ppt | 🟡 Moderately Hard | mixed |
| Flower Mound, Texas | 244.5 mg/L | 8.2 ppt | 🔴 Very Hard | mixed |
| Southlake, Texas | 308 mg/L | 9.6 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Coppell compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Coppell | 154.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Coppell's Water Unique?
Local geology and source profile
Coppell, Texas, in Dallas County northwest of Dallas — a major Dallas northwest suburban community adjacent to DFW International Airport (one of the busiest airports in the world, located partially within Coppell's sphere of influence), a highly affluent Coppell Independent School District community (consistently ranked among the top school districts in Texas), and a premier Dallas northwest suburban corporate and residential community with exceptional quality of life — draws its municipal water supply from Lake Grapevine and Lake Lewisville via the City of Coppell Water Division. Water hardness in Coppell measures 154.5 mg/L — classified as hard.
Coppell's moderate hardness — considerably softer than many DFW communities using the same NTMWD supply — reflects the City of Coppell's effective treatment of the Dallas–NTMWD blend. The supply draws from Lake Grapevine (Denton County, Elm Fork Trinity watershed — calcareous Austin Chalk terrain) and the NTMWD–Dallas Water Utilities blend. Coppell's water treatment plant applies effective softening, and Coppell's distribution infrastructure (primarily 1980s–2000s northwest Dallas suburban buildout) is relatively newer, producing the moderate 154.5 mg/L.
At 154.5 mg/L, Coppell residents encounter regular moderate-to-hard scale accumulation. Monthly descaling with citric acid solution is standard maintenance. City of Coppell Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Surface water from the Lake Grapevine and Lake Lewisville (Dallas Water Utilities–NTMWD blend) via the City of Coppell Water Division — the Dallas County northwest Dallas suburban Elm Fork Trinity corridor (Cretaceous Austin Chalk and Eagle Ford Shale calcareous terrain); moderately hard supply at 154.5 mg/L — reflecting effective treatment of the DWU–NTMWD blend in the northwest Dallas Coppell zone.