Glenn Dale Water Hardness & Quality Report (2026)
Water Hardness
8.4 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
305.1 mg/L
Est. Daily Cost
$0.38
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 Glenn Dale, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Glenn Dale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.9 yrs | 8.5 yrs | -42% |
| Washing Machine | 8.3 yrs | 12 yrs | -31% |
| Water Heater | 9.9 yrs | 15 yrs | -34% |
Regional Water Comparison
How Glenn Dale compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Glenn Dale, Maryland | 143 mg/L | 7.7 ppt | 🟠 Hard | reservoir |
| Seabrook, Maryland | 137.5 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
| Lanham-Seabrook, Maryland | 129 mg/L | 7 ppt | 🟠 Hard | reservoir |
| Greenbelt, Maryland | 169.5 mg/L | 9.2 ppt | 🟠 Hard | reservoir |
| New Carrollton, Maryland | 123 mg/L | 6.6 ppt | 🟠 Hard | reservoir |
National Benchmark
How Glenn Dale compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Glenn Dale | 143 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Glenn Dale's Water Unique?
Local geology and source profile
Glenn Dale, Maryland, in Prince George's County — a Prince George's County community adjacent to Bowie and Lanham in the DC suburban Maryland area — receives its water from the Washington Suburban Sanitary Commission (WSSC), drawing from the Potomac River (Prince George's County) through the DC suburban Maryland distribution.
The moderately hard 143 mg/L hardness and TDS of 305.1 mg/L reflect the central Maryland Prince George's County WSSC supply's moderate calcareous character — virtually identical to Glenmont MD (142.5 mg/L, Montgomery County WSSC) as both communities draw from the same WSSC Potomac-Patuxent supply system, reflecting the consistent Cambrian metasediment calcareous geology across the DC suburban Maryland watershed. The Potomac River at Prince George's County — Precambrian Wissahickon Schist (insoluble — dilutant), Cambrian calcareous metasediments (calcareous — primary hardness contributor), and Quaternary Piedmont alluvium (slightly calcareous — TDS contributor).
At 143 mg/L, Glenn Dale'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 7.7 ppt warrants a certified drinking water filter — Andrews Air Force Base (Prince George's County — AFFF) is the primary contributor to Glenn Dale's elevated PFAS readings.
Geology & Source: Glenn Dale in Prince George's County draws from the Washington Suburban Sanitary Commission on the Potomac River (Prince George's County, central Maryland) — the Potomac watershed drains the Maryland Piedmont (Precambrian Wissahickon Schist — insoluble) and Cambrian calcareous metasediments — Maryland Prince George's County Potomac River Piedmont Precambrian-Cambrian calcareous supply produces moderately hard water at 143 mg/L with TDS 305.1 mg/L.