Accokeek Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
8.3
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
491.1 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Accokeek, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Accokeek | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Accokeek compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Accokeek, Maryland | ≈ 120–179 mg/L | 10.4 ppt | 🟠 Hard | groundwater |
| Fort Washington, Maryland | ≈ 120–179 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
| Bennsville, Maryland | ≈ 120–179 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
| Fort Hunt, Virginia | ≈ 120–179 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| Mount Vernon, Virginia | ≈ 120–179 mg/L | 5.3 ppt | 🟠 Hard | reservoir |
National Benchmark
How Accokeek compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Accokeek | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Accokeek's Water Unique?
Local geology and source profile
WSSC Water supplies Accokeek, Maryland, drawing its supply from a mix of sources. The Potomac River and its reservoirs form the primary source, with groundwater from local aquifers providing a supplemental supply. These raw waters undergo extensive treatment at WSSC Water's facilities to meet stringent federal and state drinking water standards before being distributed to homes and businesses throughout Prince George's County.
The region's water originates from the Potomac River watershed, which spans both the Piedmont and Coastal Plain areas of Maryland. Geologically, the area is underlain by sedimentary layers dating back to the Cretaceous period. These include the Patuxent Formation and Patapsco Formation, characterized by deposits of clay, sand, and silt. These formations are known to leach moderate amounts of minerals, such as calcium and magnesium, into the groundwater, resulting in water that is moderately hard.
Residents in Accokeek may observe the effects of moderately hard water, such as scale deposits forming in appliances like coffee makers and water heaters over time. You might also notice that soaps and detergents don't lather quite as readily. To help maintain your appliances, consider periodic descaling of fixtures and flushing your water heater annually. While not strictly necessary, installing a water softener could further enhance cleaning and extend the lifespan of your equipment. For the most up-to-date information on specific water quality parameters, including pH and lead testing results, please refer to WSSC Water's Consumer Confidence Report, which is published annually on their website.
Geology & Source: Cretaceous sedimentary formations - Patuxent and Patapsco; clay, sand, silt layers contribute moderate mineral content
Other Maryland Water Reports
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Frequently Asked Questions
Is Accokeek's water safe to drink?
Do I need a water softener in Accokeek?
How does Accokeek compare to the USA average?
Data Sources & Methodology
Water quality data for Accokeek is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.