Dickinson Water Hardness & Quality Report (2026)
Water Hardness
12.1 grains per gallon
Source
mixed
pH Level
8.2
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
506.3 mg/L
Est. Daily Cost
$0.55
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 Dickinson, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Dickinson | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.8 yrs | 8.5 yrs | -67% |
| Washing Machine | 5.9 yrs | 12 yrs | -51% |
| Water Heater | 7.3 yrs | 15 yrs | -51% |
Regional Water Comparison
How Dickinson compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Dickinson, Texas | 207 mg/L | 7.5 ppt | 🔴 Very Hard | mixed |
| League City, Texas | 417.5 mg/L | 11.9 ppt | 🔴 Very Hard | mixed |
| Santa Fe, Texas | 146 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Seabrook, Texas | 228.5 mg/L | 7.9 ppt | 🔴 Very Hard | mixed |
| La Marque, Texas | 178.5 mg/L | 6.9 ppt | 🟠 Hard | mixed |
National Benchmark
How Dickinson compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dickinson | 207 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Dickinson's Water Unique?
Local geology and source profile
Dickinson, Texas, in Galveston County — a Galveston County city between League City and Texas City on the IH-45 Gulf Freeway corridor, part of the Houston-Galveston Bay metropolitan area — receives its municipal water from the City of Dickinson Water Supply or the Gulf Coast Water Authority (GCWA), which draws from the Evangeline Aquifer (deeper Gulf Coast groundwater) or the Trinity River through the Galveston County surface water import system.
The hard 207 mg/L hardness and elevated TDS of 506.3 mg/L reflect the Galveston County mixed Gulf Coast aquifer and surface water character. The Evangeline Aquifer (a Pliocene-Miocene Gulf Coast aquifer system) in Galveston County produces harder water than the shallow Chicot Aquifer system, with higher mineral loading from the deeper calcareous clay and sand matrix beneath the Houston coastal plain. The Trinity River import through GCWA adds additional carbonate and dissolved mineral content, producing the hard supply characteristic of the Galveston County coastal corridor.
At 207 mg/L, Dickinson's water is hard — scale builds in kettles and appliances within weeks, dishwashers require rinse aid, and bathroom fixtures develop calcium deposits. Monthly descaling is practical. A water softener is recommended. The PFAS level of 7.5 ppt warrants a certified drinking water filter — the Ellington Field Joint Reserve Base (Houston Galveston corridor — AFFF user), the Texas City industrial complex (petrochemical — one of the largest refinery concentrations in the US), and the Galveston Bay PFAS industrial corridor contribute to Dickinson's PFAS readings.
Geology & Source: Dickinson in Galveston County draws from Dickinson Water Supply or Gulf Coast Water Authority on the Gulf Coast Aquifer (Evangeline Aquifer — Pliocene-Miocene sand) or the Trinity River via Galveston County surface supply — the Evangeline Aquifer accesses Pliocene-Miocene Gulf Coast alluvial sand — Gulf Coast alluvial aquifer and Trinity River blended supply produces hard water at 207 mg/L with elevated TDS 506 mg/L in this Galveston County Texas city.