Linthicum Water Hardness & Quality Report (2026)
Water Hardness
6.3 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
193.4 mg/L
Est. Daily Cost
$0.29
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 Linthicum, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Linthicum | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6 yrs | 8.5 yrs | -29% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 11.3 yrs | 15 yrs | -25% |
Regional Water Comparison
How Linthicum compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Linthicum, Maryland | 108 mg/L | 5.8 ppt | 🟡 Moderately Hard | reservoir |
| Ferndale, Maryland | 196 mg/L | 10.7 ppt | 🔴 Very Hard | reservoir |
| Brooklyn Park, Maryland | 193 mg/L | 10.6 ppt | 🔴 Very Hard | reservoir |
| Glen Burnie, Maryland | 138.5 mg/L | 7.5 ppt | 🟠 Hard | reservoir |
| Elkridge, Maryland | 169 mg/L | 9.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Linthicum compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Linthicum | 108 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Linthicum's Water Unique?
Local geology and source profile
Linthicum, Maryland, in Anne Arundel County — an Anne Arundel County community adjacent to Brooklyn Park and Halethorpe near BWI Airport in central Maryland — receives its water from the Baltimore City Department of Public Works, drawing from the Loch Raven and Prettyboy watershed reservoirs through the central Maryland distribution.
The moderately hard 108 mg/L hardness and TDS of 193.4 mg/L reflect the Anne Arundel County supply's moderate Piedmont character — the Precambrian Baltimore Gneiss and Cambrian Setters Formation are insoluble-slightly calcareous formations in the Maryland Piedmont; Linthicum's distribution zone receives Baltimore City supply at moderate hardness consistent with the Loch Raven watershed (compare Brooklyn Park MD: 105/186 in Anne Arundel County comparable; Halethorpe MD: 111/201 in Baltimore County comparable; Linthicum consistent moderate from the same Anne Arundel County Loch Raven watershed Precambrian supply). The Loch Raven/Prettyboy watershed — Precambrian Baltimore Gneiss (insoluble — primary dilutant), Cambrian Setters Formation (slightly calcareous — primary hardness contributor), and Quaternary Piedmont alluvium (slightly calcareous — minor TDS).
At 108 mg/L with TDS 193, Linthicum's water is moderately hard — mild scale buildup. Semi-annual descaling is appropriate. The PFAS level of 5.8 ppt warrants a certified drinking water filter. Review the Baltimore City DPW's annual water quality report.
Geology & Source: Linthicum in Anne Arundel County draws from the Baltimore City Water on the Loch Raven/Prettyboy watershed (Anne Arundel County, central Maryland) — the Baltimore watershed draws from Precambrian Baltimore Gneiss (insoluble) and Cambrian Setters Formation (slightly calcareous) — Maryland Anne Arundel County Loch Raven watershed Precambrian supply produces moderately hard water at 108 mg/L with TDS 193.4 mg/L.