Seabrook Water Hardness & Quality Report (2026)
Water Hardness
13.3 grains per gallon
Source
mixed
pH Level
8.3
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
574.6 mg/L
Est. Daily Cost
$0.61
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 Seabrook, your appliances are currently losing 30% efficiency due to mineral buildup.
| Appliance | In Seabrook | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.1 yrs | 8.5 yrs | -75% |
| Washing Machine | 5.1 yrs | 12 yrs | -58% |
| Water Heater | 6.5 yrs | 15 yrs | -57% |
Regional Water Comparison
How Seabrook compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Seabrook, Texas | 228.5 mg/L | 7.9 ppt | 🔴 Very Hard | mixed |
| League City, Texas | 417.5 mg/L | 11.9 ppt | 🔴 Very Hard | mixed |
| La Porte, Texas | 190 mg/L | 7.1 ppt | 🔴 Very Hard | mixed |
| Dickinson, Texas | 207 mg/L | 7.5 ppt | 🔴 Very Hard | mixed |
| Deer Park, Texas | 146 mg/L | 6.2 ppt | 🟠 Hard | mixed |
National Benchmark
How Seabrook compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Seabrook | 228.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Seabrook's Water Unique?
Local geology and source profile
Seabrook, Texas, in Harris County — a Harris County city adjacent to Clear Lake and Nassau Bay on Galveston Bay in the southeast Houston metro — receives its water from the City of Seabrook Water, drawing from Lake Houston or the Gulf Coast Aquifer (Harris County) through the southeast Houston metro distribution.
The very hard 228.5 mg/L hardness and TDS of 574.6 mg/L reflect the southeast Texas Harris County Gulf Coast supply's very hard character — driven by the Pleistocene Beaumont Clay evaporitic aquifer that underlies the Houston coastal plain, typical of southeast Houston communities. The Gulf Coast Aquifer at Harris County — Pleistocene Beaumont Clay (calcareous-evaporitic — primary hardness and TDS contributor), Quaternary Holocene alluvial deposits (slightly calcareous — secondary contributor), and Tertiary Chicot Formation (calcareous-evaporitic — tertiary contributor).
At 228.5 mg/L with TDS 574, Seabrook's water is very hard. A water softener is strongly recommended to prevent rapid scale buildup. A reverse osmosis system is advisable for drinking water. The PFAS level of 7.9 ppt warrants a certified drinking water filter — Ellington Field (Harris County — AFFF) and the southeast Houston Harris County petrochemical-industrial corridor contribute to Seabrook's elevated readings.
Geology & Source: Seabrook in Harris County draws from the City of Seabrook Water on the Trinity River via Lake Houston or local Gulf Coast Aquifer (Harris County, southeast Texas) — the Gulf Coast Aquifer at Harris County is developed in Pleistocene Beaumont Clay (calcareous-evaporitic) and Tertiary Chicot Formation — Texas Harris County Gulf Coast Aquifer-Trinity River Pleistocene evaporitic watershed produces very hard water at 228.5 mg/L with TDS 574.6 mg/L.