Glassmanor Water Hardness & Quality Report (2026)
Water Hardness
8 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
284.4 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 Glassmanor, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Glassmanor | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.1 yrs | 8.5 yrs | -40% |
| Washing Machine | 8.5 yrs | 12 yrs | -29% |
| Water Heater | 10.1 yrs | 15 yrs | -33% |
Regional Water Comparison
How Glassmanor compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Glassmanor, Maryland | 137 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
| Oxon Hill, Maryland | 177.5 mg/L | 9.7 ppt | 🟠 Hard | reservoir |
| Oxon Hill-Glassmanor, Maryland | 110 mg/L | 5.9 ppt | 🟡 Moderately Hard | reservoir |
| Hillcrest Heights, Maryland | 105.5 mg/L | 5.6 ppt | 🟡 Moderately Hard | reservoir |
| Alexandria, Virginia | 178.5 mg/L | 9.3 ppt | 🟠 Hard | reservoir |
National Benchmark
How Glassmanor compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Glassmanor | 137 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Glassmanor's Water Unique?
Local geology and source profile
Glassmanor, Maryland, in Prince George's County — an unincorporated Prince George's County community adjacent to Oxon Hill and Marlow Heights in the south Prince George's County corridor — receives its municipal water from WSSC Water (Washington Suburban Sanitary Commission), drawing from the Potomac River at the WSSC Potomac Water Filtration Plant (Potomac, Maryland) or the Patuxent River at the Patuxent WFP.
The moderately hard 137 mg/L hardness and TDS of 284.4 mg/L reflect the WSSC Potomac supply's Appalachian-Piedmont mixed character. The Potomac River at the WSSC intake drains the central Appalachians — Ordovician Frederick Limestone (Hagerstown Valley carbonate), Cambrian Conococheague dolomite (highly calcareous), and the Maryland Piedmont (insoluble Precambrian Wissahickon schist). The Shenandoah River tributary carbonate loading (Virginia Valley and Ridge) raises the Potomac hardness.
At 137 mg/L, Glassmanor'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 7.4 ppt warrants a certified drinking water filter — the Joint Base Andrews (AFFF), the Prince George's County suburban-industrial corridor, and the Potomac River mid-Atlantic PFAS complex contribute to Glassmanor's readings.
Geology & Source: Glassmanor in Prince George's County draws from WSSC Water on the Potomac River (Prince George's County, Maryland) — the Potomac drains the Appalachians (Ordovician Frederick Limestone, Cambrian Conococheague dolomite) and Maryland Piedmont (Precambrian Wissahickon schist) — Maryland WSSC Potomac River Appalachian-Piedmont watershed produces moderately hard water at 137 mg/L with TDS 284.4 mg/L in this Prince George's County Maryland community.