Washington Water Hardness & Quality Report (2026)
Water Hardness
8.8 grains per gallon
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
317.3 mg/L
Est. Daily Cost
$0.40
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 Washington, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Washington | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.6 yrs | 8.5 yrs | -46% |
| Washing Machine | 8.1 yrs | 12 yrs | -33% |
| Water Heater | 9.6 yrs | 15 yrs | -36% |
Regional Water Comparison
How Washington compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Washington, Pennsylvania | 150 mg/L | 7.9 ppt | 🟠 Hard | reservoir |
| Upper Saint Clair, Pennsylvania | 88 mg/L | 4.6 ppt | 🟡 Moderately Hard | reservoir |
| Bethel Park, Pennsylvania | 194 mg/L | 10.2 ppt | 🔴 Very Hard | reservoir |
| Mount Lebanon, Pennsylvania | 130.5 mg/L | 6.9 ppt | 🟠 Hard | reservoir |
| South Park Township, Pennsylvania | 146.5 mg/L | 7.7 ppt | 🟠 Hard | reservoir |
National Benchmark
How Washington compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Washington | 150 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Washington's Water Unique?
Local geology and source profile
Washington, Pennsylvania, in Washington County — the Washington County seat adjacent to Canonsburg and Peters Township in southwest Pennsylvania — receives its water from Pennsylvania American Water, drawing from Chartiers Creek (Washington County) through the southwest Pennsylvania distribution.
The moderately hard 150 mg/L hardness and TDS of 317.3 mg/L reflect the southwest Pennsylvania Washington County Chartiers Creek supply's moderate calcareous character — reflecting the Pennsylvanian Monongahela Formation's slightly calcareous limestone beds (notably the Pittsburgh Limestone and Sewickley Limestone members) that yield moderate hardness across the Monongahela River tributary watershed typical of southwest Pennsylvania communities. The Chartiers Creek watershed at Washington County — Pennsylvanian Monongahela Formation (slightly calcareous — primary hardness contributor), Pennsylvanian Conemaugh Formation (slightly calcareous — secondary contributor), and Pennsylvanian Pittsburgh Coal (insoluble — dilutant).
At 150 mg/L, Washington'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 7.9 ppt warrants a certified drinking water filter — the Washington County southwest Pennsylvania industrial corridor and the Allegheny County legacy steel and chemical industry (regional) contribute to Washington's elevated readings.
Geology & Source: Washington in Washington County draws from the Pennsylvania American Water on Chartiers Creek reservoir (Washington County, southwest Pennsylvania) — Chartiers Creek at Washington County drains the Appalachian Plateau (Pennsylvanian Monongahela Formation — slightly calcareous) and Pennsylvanian Pittsburgh Coal (insoluble) — Pennsylvania Washington County Chartiers Creek Pennsylvanian calcareous plateau produces moderately hard water at 150 mg/L with TDS 317.3 mg/L.