Aberdeen Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
6.7
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
110 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 Aberdeen, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Aberdeen | 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 Aberdeen compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Aberdeen, Maryland | ≈ 120–179 mg/L | 108.1 ppt | 🟠 Hard | reservoir |
| Havre de Grace, Maryland | 70 mg/L | 0 ppt | 🟡 Moderately Hard | reservoir |
| Bel Air South, Maryland | 122 mg/L | 120 ppt | 🟠 Hard | reservoir |
| Edgewood, Maryland | ≈ 120–179 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
| South Bel Air, Maryland | 122 mg/L | 9.7 ppt | 🟠 Hard | reservoir |
National Benchmark
How Aberdeen compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Aberdeen | ≈ 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 Aberdeen's Water Unique?
Local geology and source profile
The City of Aberdeen Public Water Utility provides water to about 16,200 residents in Aberdeen, Harford County, Maryland. Their supply is a blend from multiple sources. They draw water from fourteen wells tapping the Talbot Formation aquifer. Additionally, they receive water from the Harford County Water Treatment Plant, which is fed by the Susquehanna River, the Perryman wellfield, and the Abingdon Water Treatment Plant. A third source is the Havre de Grace Water Treatment Plant, also drawing from the Susquehanna River. The utility treats an average of 1,490,000 gallons daily.
The Talbot Formation aquifer, a Pleistocene-age coastal plain deposit of unconsolidated sands, gravels, and clays, contributes dissolved minerals. The Susquehanna River watershed, meanwhile, drains Appalachian geology including Paleozoic sandstones, shales, and limestones. This mix of groundwater from sandy aquifer sediments and surface water from a limestone-influenced river basin results in a moderately mineralized supply. The presence of limestone bedrock in parts of the watershed contributes to the pickup of calcium and magnesium, leading to hardness.
At moderately hard levels, this water can lead to scale buildup in appliances like water heaters and dishwashers, potentially reducing their efficiency and lifespan. You might notice clogging in faucet aerators and showerheads, resulting in lower water flow. Homeowners can manage this by descaling appliances annually and flushing hot water heaters. Installing a water softener is often recommended to significantly mitigate these effects, particularly for those with older plumbing systems. The City of Aberdeen's 2024 report confirms all tested contaminants are below EPA limits, meaning the water is safe to drink.
Geology & Source: Talbot Formation aquifer (Pleistocene coastal plain sands, gravels, clays); Susquehanna River watershed (Appalachian Paleozoic sandstones, shales, limestones) - moderate hardness from sedimentary layers and limestone pickup
Other Maryland Water Reports
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Frequently Asked Questions
Is Aberdeen's water safe to drink?
Do I need a water softener in Aberdeen?
How does Aberdeen compare to the USA average?
Data Sources & Methodology
Water quality data for Aberdeen 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.