Tomball Water Hardness & Quality Report (2026)
Water Hardness
6.4 grains per gallon
Source
mixed
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
234.5 mg/L
Est. Daily Cost
$0.29
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 Tomball, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Tomball | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6 yrs | 8.5 yrs | -29% |
| Washing Machine | 9.5 yrs | 12 yrs | -21% |
| Water Heater | 11.2 yrs | 15 yrs | -25% |
Regional Water Comparison
How Tomball compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Tomball, Texas | 110 mg/L | 5.4 ppt | 🟡 Moderately Hard | mixed |
| The Woodlands, Texas | 391.5 mg/L | 11.3 ppt | 🔴 Very Hard | mixed |
| Cypress, Texas | 370.5 mg/L | 10.9 ppt | 🔴 Very Hard | mixed |
| Spring, Texas | 352.5 mg/L | 10.5 ppt | 🔴 Very Hard | mixed |
| Conroe, Texas | 122 mg/L | 5.7 ppt | 🟠 Hard | mixed |
National Benchmark
How Tomball compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tomball | 110 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Tomball's Water Unique?
Local geology and source profile
Tomball, Texas, in Harris County — a Harris County city adjacent to Spring and Klein in the northwest Houston suburbs — receives its water from the City of Tomball Water Department or regional Harris County utility, drawing from the Chicot Aquifer (Gulf Coastal Plain groundwater) through the southeast Texas distribution.
The moderately hard 110 mg/L hardness and TDS of 234.5 mg/L reflect the Harris County Chicot Aquifer supply's moderate character — the Quaternary Beaumont Formation and Tertiary Evangeline aquifer are calcareous to slightly calcareous Gulf Coastal Plain sediments, producing the typical moderate hardness of the northwest Houston suburban water supply (compare Spring TX: 107/228 in Harris County comparable; Klein TX: 113/240 in Harris County comparable; Tomball consistent moderate from the same Harris County Chicot Aquifer Gulf Coastal Plain supply). The Gulf Coastal Plain at Harris County — Quaternary Beaumont Formation (calcareous — primary hardness contributor), Tertiary Evangeline aquifer (slightly calcareous — secondary contributor), and Holocene Cypress Creek alluvium (calcareous — TDS contributor).
At 110 mg/L with TDS 235, Tomball's water is moderately hard — mild scale buildup in appliances. Semi-annual descaling is appropriate. The PFAS level of 5.4 ppt is moderate — a certified filter provides added protection. Review the City of Tomball's annual water quality report for the latest data.
Geology & Source: Tomball in Harris County draws from the City of Tomball Water on the Chicot Aquifer (Harris County, southeast Texas) — the Gulf Coastal Plain at Harris County is developed in Quaternary Beaumont Formation (calcareous) and Tertiary Evangeline aquifer (slightly calcareous) — Texas Harris County Chicot Aquifer Gulf Coastal Plain supply produces moderately hard water at 110 mg/L with TDS 234.5 mg/L.