Grapevine Water Hardness & Quality Report (2026)
Water Hardness
6.8 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
217 mg/L
Est. Daily Cost
$0.31
energy & soap waste
Source: See methodology section below · 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 16% efficiency due to mineral buildup.
| Appliance | In Grapevine | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Grapevine compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Grapevine, Texas | 117 mg/L | 289.2 ppt | 🟡 Moderately Hard | reservoir |
| Southlake, Texas | ≈ 120–179 mg/L | 97.8 ppt | 🟠 Hard | reservoir |
| Coppell, Texas | ≈ 180+ mg/L | 63.5 ppt | 🔴 Very Hard | reservoir |
| Flower Mound, Texas | ≈ 180+ mg/L | 290.9 ppt | 🔴 Very Hard | reservoir |
| Colleyville, Texas | ≈ 120–179 mg/L | 78.9 ppt | 🟠 Hard | reservoir |
National Benchmark
How Grapevine compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Grapevine | 117 mg/L | 🟡 Low |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
Bring Scarsdale-quality water to your Grapevine home
Shop water softeners on Amazon.com →
What Makes Grapevine's Water Unique?
Local geology and source profile
The City of Grapevine Utilities serves Grapevine, Texas, within Tarrant and Denton Counties in the Dallas-Fort Worth region. Approximately 70% of supply comes from the Trinity River Authority (TRA), sourced from Cedar Creek Reservoir and Richland Chambers Reservoir; the remaining 30% is from the city's Lake Grapevine on the West Fork Trinity River. Treatment occurs at city facilities with TRA water blended post-treatment. The 2024 Annual Drinking Water Quality Report confirms EPA compliance, though source water is classified as high susceptibility by TCEQ.
The Trinity River watershed drains a vast area of North Texas, with source reservoirs impounded on tributaries flowing over Cretaceous-age limestone bedrock and associated formations. Karst features and soil interactions mobilize calcium and magnesium into surface waters. Limestone dissolution dominates, supplemented by magnesium from regional geology, shaping a mineralized profile at 117 mg/L moderate hardness typical of the area's carbonate terrain, without significant aquifer involvement.
Moderate hard water in Grapevine leaves mineral scale in pipes, heaters, and fixtures, reducing efficiency in water heaters, dishwashers, and washing machines while causing spots on glassware and dry skin or hair. Regular vinegar descaling, annual heater flushes, and a water softener are recommended to extend appliance life. The 2024 report shows turbidity within limits (100% ≤0.3 NTU); pH, lead, and copper comply with standards. Per third-party data, PFAS levels (PFOS 4.05 ppt, PFOA 4.02 ppt) marginally exceed new EPA MCLs of 4.0 ppt. Treatment includes filtration, disinfection, and fluoridation.
Geology & Source: Lake Grapevine (West Fork Trinity River); Cedar Creek Reservoir and Richland Chambers Reservoir — Cretaceous limestone and magnesium-bearing strata; carbonate weathering over karst terrain produces moderate hardness
Other Texas Water Reports
Report an Issue
Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.
All reports are reviewed by our team. Thank you for supporting data quality!
Frequently Asked Questions
Is Grapevine's water safe to drink?
Do I need a water softener in Grapevine?
How does Grapevine compare to the USA average?
Data Sources & Methodology
Water quality data for Grapevine is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.