Randallstown Water Hardness & Quality Report (2026)
Water Hardness
8 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
282.7 mg/L
Est. Daily Cost
$0.36
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 Randallstown, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Randallstown | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.1 yrs | 8.5 yrs | -40% |
| Washing Machine | 8.5 yrs | 12 yrs | -29% |
| Water Heater | 10.1 yrs | 15 yrs | -33% |
Regional Water Comparison
How Randallstown compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Randallstown, Maryland | 136.5 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
| Milford Mill, Maryland | 190 mg/L | 10.4 ppt | 🔴 Very Hard | reservoir |
| Owings Mills, Maryland | 176 mg/L | 9.6 ppt | 🟠 Hard | reservoir |
| Pikesville, Maryland | 85 mg/L | 4.4 ppt | 🟡 Moderately Hard | reservoir |
| Lochearn, Maryland | 119.5 mg/L | 6.4 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Randallstown compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Randallstown | 136.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Randallstown's Water Unique?
Local geology and source profile
Randallstown, Maryland, an unincorporated community in Baltimore County — a major northwest Baltimore County suburban community (Randallstown is a significant unincorporated Baltimore County community in the northwest Baltimore suburban corridor — a primarily residential community adjacent to Pikesville and Owings Mills, in the northwest Baltimore County I-795 corridor), a diverse Baltimore County community with a significant African-American, working-class, and middle-class professional population (Randallstown has experienced significant demographic change since the 1970s–1980s, transitioning from a predominantly white working-class community to one of the most economically diverse African-American suburban communities in Baltimore County), adjacent to Liberty Reservoir (a significant Baltimore water supply reservoir in western Baltimore County), and a community in the northwest Baltimore County corridor — draws its municipal water supply from the Gunpowder River (Loch Raven Reservoir) via the Baltimore City DPW. Water hardness in Randallstown measures 136.5 mg/L — classified as moderately hard.
Randallstown's moderate hardness reflects the northwest Baltimore County distribution zone. The Baltimore City DPW distributes Prettyboy and Loch Raven Reservoir supply through the northwest Baltimore County Randallstown zone (primarily 1950s–1970s suburban development mains), producing the moderate 136.5 mg/L.
At 136.5 mg/L, Randallstown residents encounter moderate scale accumulation. Monthly cleaning is recommended. Baltimore City DPW consistently delivers water meeting all Maryland MDE and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Prettyboy and Loch Raven Reservoirs (Gunpowder River watershed) via the Baltimore City Department of Public Works (BCDPW) — the Baltimore County northwest suburban Randallstown corridor (Precambrian calcareous-poor Maryland Piedmont gneiss — the calcareous-poor northwest Baltimore County Piedmont watershed; Baltimore City DPW northwest Baltimore County distribution to Randallstown zone); moderately hard supply at 136.5 mg/L in Baltimore County.