Lansdale Water Hardness & Quality Report (2026)
Water Hardness
8.2 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
279.7 mg/L
Est. Daily Cost
$0.37
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 Lansdale, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Lansdale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5 yrs | 8.5 yrs | -41% |
| Washing Machine | 8.4 yrs | 12 yrs | -30% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How Lansdale compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lansdale, Pennsylvania | 140.5 mg/L | 7.1 ppt | 🟠 Hard | reservoir |
| Montgomeryville, Pennsylvania | 112 mg/L | 5.6 ppt | 🟡 Moderately Hard | reservoir |
| East Norriton, Pennsylvania | 110.5 mg/L | 5.5 ppt | 🟡 Moderately Hard | reservoir |
| Norristown, Pennsylvania | 203.5 mg/L | 10.5 ppt | 🔴 Very Hard | reservoir |
| West Norriton, Pennsylvania | 195 mg/L | 10 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Lansdale compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lansdale | 140.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lansdale's Water Unique?
Local geology and source profile
Lansdale, Pennsylvania, in Montgomery County — a Montgomery County borough adjacent to North Wales and Hatfield in the north Philadelphia metro — receives its municipal water from North Penn Water Authority, drawing from local reservoir sources and the North Penn Water Authority supply wells in Montgomery County through the north Philadelphia metro distribution system.
The moderately hard 140.5 mg/L hardness and TDS of 279.7 mg/L reflect the north Montgomery County supply's mixed Piedmont-Triassic character. The Montgomery County watershed drains the Pennsylvania Piedmont — Precambrian Wissahickon Formation schist (moderately insoluble metamorphic), and the Triassic Newark Basin Brunswick Formation (calcareous red shale — the primary hardness contributor to east Pennsylvania watershed supplies). The mixed crystalline Piedmont and Triassic calcareous Newark Basin produces the moderately hard north Montgomery County supply.
At 140.5 mg/L, Lansdale's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 7.1 ppt warrants a certified drinking water filter — the Montgomery County north Philadelphia metro industrial corridor (the Lansdale-Hatfield manufacturing zone), and the Delaware Valley PFAS complex contribute to Lansdale's readings.
Geology & Source: Lansdale in Montgomery County draws from North Penn Water on local reservoirs (Montgomery County, southeast Pennsylvania) — the Montgomery County watershed drains the Pennsylvania Piedmont (Precambrian Wissahickon schist) and Triassic Newark Basin (Brunswick calcareous) — Pennsylvania Montgomery County Piedmont-Triassic watershed produces moderately hard water at 140.5 mg/L with TDS 279.7 mg/L.