Conroe Water Hardness & Quality Report (2026)
Water Hardness
7.1 grains per gallon
Source
mixed
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
264.8 mg/L
Est. Daily Cost
$0.33
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 Conroe, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Conroe | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.6 yrs | 8.5 yrs | -34% |
| Washing Machine | 9.1 yrs | 12 yrs | -24% |
| Water Heater | 10.7 yrs | 15 yrs | -29% |
Regional Water Comparison
How Conroe compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Conroe, Texas | 122 mg/L | 5.7 ppt | 🟠 Hard | mixed |
| The Woodlands, Texas | 391.5 mg/L | 11.3 ppt | 🔴 Very Hard | mixed |
| Spring, Texas | 352.5 mg/L | 10.5 ppt | 🔴 Very Hard | mixed |
| New Caney, Texas | 150 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Humble, Texas | 261 mg/L | 8.6 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Conroe compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Conroe | 122 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Conroe's Water Unique?
Local geology and source profile
Conroe, Texas, the Montgomery County seat north of Houston in the rapidly growing Houston metropolitan area — home of Lake Conroe and a major real estate growth corridor — draws its municipal water supply from a blend of Lake Conroe (a City of Houston/San Jacinto River Authority impoundment on the West Fork San Jacinto River) and Gulf Coast Aquifer groundwater wells via the City of Conroe Public Works Water Division and Montgomery County municipal utility districts. Water hardness in Conroe measures 122 mg/L — classified as moderately hard.
Conroe's moderate hardness reflects the Montgomery County supply blend from Lake Conroe surface water and Gulf Coast Aquifer groundwater. The West Fork San Jacinto River at Lake Conroe drains the East Texas Piney Woods — the Eocene Yegua and Cook Mountain Formations (calcareous marine sand and clay of the Gulf Coastal Plain, with moderate dissolved calcium contribution) and the Quaternary alluvial terrace deposits of the upper San Jacinto. The Gulf Coast Aquifer in Montgomery County — the Chicot (Pleistocene Beaumont and Lissie Formations) and Evangeline (Pliocene Goliad Formation) aquifers — produces moderately hard groundwater from the calcareous sand and shell-bearing Coastal Plain units. The supply blend produces the 122 mg/L moderate hardness.
At 122 mg/L, Conroe residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. City of Conroe Public Works Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Gulf Coast Aquifer (Chicot Aquifer and Evangeline Aquifer) and Lake Conroe (West Fork San Jacinto River) via the City of Conroe Public Works Water Division — the Pleistocene Beaumont and Lissie Formations and the Pliocene Goliad Formation Gulf Coast aquifer of Montgomery County; moderately hard supply at 122 mg/L in Montgomery County.