Calverton Water Hardness & Quality Report (2026)
Water Hardness
5.7 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
163.3 mg/L
Est. Daily Cost
$0.26
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 Calverton, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Calverton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.4 yrs | 8.5 yrs | -25% |
| Washing Machine | 10 yrs | 12 yrs | -17% |
| Water Heater | 11.7 yrs | 15 yrs | -22% |
Regional Water Comparison
How Calverton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Calverton, Maryland | 97 mg/L | 5.1 ppt | 🟡 Moderately Hard | reservoir |
| Fairland, Maryland | 184 mg/L | 10.1 ppt | 🔴 Very Hard | reservoir |
| Beltsville, Maryland | 133.5 mg/L | 7.2 ppt | 🟠 Hard | reservoir |
| White Oak, Maryland | 100 mg/L | 5.3 ppt | 🟡 Moderately Hard | reservoir |
| Adelphi, Maryland | 191.5 mg/L | 10.5 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Calverton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Calverton | 97 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Calverton's Water Unique?
Local geology and source profile
Calverton, Maryland, in Prince George's County — an unincorporated Prince George's County community adjacent to Beltsville and Adelphi in the north Prince George's County corridor — receives its municipal water from the Washington Suburban Sanitary Commission (WSSC), drawing from the Patuxent River at Rocky Gorge Reservoir or Triadelphia Reservoir (Prince George's-Howard Counties).
The moderately soft 97 mg/L hardness and TDS of 163.3 mg/L reflect the Patuxent River supply — softer than the adjacent WSSC Potomac River supply (which runs 100-150 mg/L depending on season and flow). The Patuxent River drains the Maryland Piedmont — Precambrian Laurel Formation (siliceous schist — insoluble), Triassic Culpeper Basin (calcareous redbeds — minor carbonate contribution), and Pleistocene Coastal Plain terrace. The WSSC Patuxent supply is slightly softer than the Potomac supply due to the greater proportion of insoluble Piedmont crystalline bedrock in the Patuxent watershed.
At 97 mg/L, Calverton's water is moderately soft — light scale may form in appliances, but dishwashers and water heaters remain efficient. Semi-annual descaling is sufficient. The PFAS level of 5.1 ppt warrants a certified drinking water filter — Andrews Air Force Base (Prince George's County — AFFF in the Patuxent watershed), the Beltsville Agricultural Research Center (PFAS in runoff), and the Maryland suburban Washington DC PFAS background contribute to Calverton's readings.
Geology & Source: Calverton in Prince George's County draws from Washington Suburban Sanitary Commission on the Patuxent River watershed (Prince George's County, Maryland) — the Patuxent drains the Maryland Piedmont (Precambrian Laurel Formation schist, Triassic Culpeper Basin calcareous) — Maryland Prince George's County Patuxent Piedmont watershed produces moderately soft water at 97 mg/L with TDS 163.3 mg/L in this Prince George's County Maryland community.