Joppatowne Water Hardness & Quality Report (2026)
Water Hardness
10.5 grains per gallon
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
444.3 mg/L
Est. Daily Cost
$0.48
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 Joppatowne, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Joppatowne | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How Joppatowne compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Joppatowne, Maryland | 179 mg/L | 9.8 ppt | 🟠 Hard | reservoir |
| Edgewood, Maryland | 161.5 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
| Bel Air South, Maryland | 90 mg/L | 4.7 ppt | 🟡 Moderately Hard | reservoir |
| Perry Hall, Maryland | 200 mg/L | 11 ppt | 🔴 Very Hard | reservoir |
| Middle River, Maryland | 186 mg/L | 10.2 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Joppatowne compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Joppatowne | 179 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Joppatowne's Water Unique?
Local geology and source profile
Joppatowne, Maryland, in Harford County — a Harford County planned community adjacent to Edgewood and Aberdeen on the Susquehanna River in northeast Maryland — receives its water from the Harford County Water, drawing from the Susquehanna River or Conowingo Reservoir (Harford County) through the northeast Maryland distribution.
The hard 179 mg/L hardness and TDS of 444.3 mg/L reflect the northeast Maryland Harford County Susquehanna River supply's hard calcareous character — the Ordovician Conestoga Formation calcareous contributions accumulate in the Susquehanna corridor, consistent with the northeast Maryland communities (compare Canton MD: 105/185 on the Baltimore City Loch Raven supply softer; Riviera Beach MD: 160/368 in Anne Arundel County comparable; Joppatowne harder from the direct Susquehanna calcareous draw). The Susquehanna River at Harford County — Ordovician Conestoga Formation (calcareous — primary hardness contributor), Precambrian Brandywine Gneiss (insoluble — dilutant), and Quaternary Susquehanna alluvium (calcareous — TDS contributor).
At 179 mg/L with TDS 444, Joppatowne's water is hard. A water softener is recommended to prevent scale buildup. A reverse osmosis system is advisable for drinking water. The PFAS level of 9.8 ppt warrants a certified drinking water filter — the Harford County northeast Maryland military (APG) and industrial corridor contribute to Joppatowne's elevated readings.
Geology & Source: Joppatowne in Harford County draws from the Harford County Water on the Susquehanna River or Conowingo Reservoir (Harford County, northeast Maryland) — the Susquehanna River at Harford County drains the Pennsylvania Piedmont (Ordovician Conestoga Formation — calcareous) and Precambrian Brandywine Gneiss (insoluble) — Maryland Harford County Susquehanna-Conowingo Ordovician-Precambrian calcareous supply produces hard water at 179 mg/L with TDS 444.3 mg/L.