Eldersburg Water Hardness & Quality Report (2026)
Water Hardness
9.6 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
385.7 mg/L
Est. Daily Cost
$0.44
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 Eldersburg, your appliances are currently losing 22% efficiency due to mineral buildup.
| Appliance | In Eldersburg | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.2 yrs | 8.5 yrs | -51% |
| Washing Machine | 7.5 yrs | 12 yrs | -38% |
| Water Heater | 9 yrs | 15 yrs | -40% |
Regional Water Comparison
How Eldersburg compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Eldersburg, Maryland | 164.5 mg/L | 9 ppt | 🟠 Hard | reservoir |
| Reisterstown, Maryland | 144.5 mg/L | 7.8 ppt | 🟠 Hard | reservoir |
| Randallstown, Maryland | 136.5 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
| Owings Mills, Maryland | 176 mg/L | 9.6 ppt | 🟠 Hard | reservoir |
| Westminster, Maryland | 90 mg/L | 4.7 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Eldersburg compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Eldersburg | 164.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Eldersburg's Water Unique?
Local geology and source profile
Eldersburg, Maryland, an unincorporated community in Carroll County — a major northwest Maryland Baltimore suburban community (Eldersburg is a significant Carroll County unincorporated community — one of the most rapidly growing Carroll County communities in the Baltimore suburban corridor; Eldersburg is in the Liberty Road–MD-26 corridor connecting Carroll County to the Baltimore metro, and has grown significantly as an affordable Baltimore suburban alternative with larger lots and a more rural character than inner Baltimore County suburbs), a diverse Carroll County community with a primarily working-class, rural-suburban, and commuter professional population, adjacent to Sykesville and Woodbine in the northwest Carroll County corridor, home of significant new residential development, and a community with a strong community identity despite being unincorporated — draws its municipal water supply via the Carroll County Public Works Water Division. Water hardness in Eldersburg measures 164.5 mg/L — classified as hard.
Eldersburg's hard supply reflects the Carroll County northwest Maryland distribution zone's limited softening. The Carroll County Water Division distributes Liberty Reservoir supply (draining Precambrian Maryland Piedmont gneiss — calcareous-poor) through the northwest Carroll County Eldersburg zone with limited softening, producing the hard 164.5 mg/L.
At 164.5 mg/L, Eldersburg residents face regular hard water challenges. Monthly descaling and water softeners are recommended. Carroll County Public Works consistently delivers water meeting all Maryland MDE and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Patapsco River (Liberty Reservoir) via the Carroll County Public Works Water Division — the Carroll County northwest Maryland Baltimore suburban Eldersburg corridor (Precambrian calcareous-poor Maryland Piedmont gneiss — the calcareous-poor northwest Maryland Piedmont Liberty Reservoir watershed; Carroll County Water Division limited softening); hard supply at 164.5 mg/L in Carroll County.