Vandalia Water Hardness & Quality Report (2026)
Water Hardness
12.7 grains per gallon
Source
river
pH Level
8.4
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
518.2 mg/L
Est. Daily Cost
$0.58
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 Vandalia, your appliances are currently losing 29% efficiency due to mineral buildup.
| Appliance | In Vandalia | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.4 yrs | 8.5 yrs | -72% |
| Washing Machine | 5.6 yrs | 12 yrs | -53% |
| Water Heater | 6.9 yrs | 15 yrs | -54% |
Regional Water Comparison
How Vandalia compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Vandalia, Ohio | 217.5 mg/L | 8.5 ppt | 🔴 Very Hard | river |
| Huber Heights, Ohio | 250 mg/L | 9.9 ppt | 🔴 Very Hard | river |
| Englewood, Ohio | 181.5 mg/L | 7.1 ppt | 🔴 Very Hard | river |
| Dayton, Ohio | 108.5 mg/L | 4.1 ppt | 🟡 Moderately Hard | river |
| Riverside, Ohio | 256 mg/L | 10.1 ppt | 🔴 Very Hard | river |
National Benchmark
How Vandalia compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Vandalia | 217.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Vandalia's Water Unique?
Local geology and source profile
Vandalia, Ohio, in Montgomery County — a Montgomery County city adjacent to Englewood and Tipp City in the north Dayton metro — receives its municipal water from the Vandalia Water Division, drawing from the Great Miami River (Montgomery County) through the west-central Ohio water treatment system.
The very hard 217.5 mg/L hardness and high TDS of 518.2 mg/L reflect the west-central Ohio Great Miami River supply's intense Silurian evaporitic and Ordovician calcareous character — consistent with other Great Miami River communities (Dayton: ~220 mg/L; Miamisburg: ~215 mg/L). The Great Miami River at Montgomery County drains the Ohio Till Plain — Silurian Salina Formation (evaporitic halite and gypsum — dominant TDS contributor), Silurian Niagara Group (dolomite — calcareous), and Ordovician Maysvillian Limestone (calcareous — primary hardness contributor). The Silurian Salina evaporitic dissolution and Ordovician calcareous input produce the very hard west-central Ohio supply.
At 217.5 mg/L with TDS 518, Vandalia's water is very hard. A water softener is strongly recommended. Scale builds rapidly on all surfaces, appliance lifespans are significantly shortened, and water heaters require annual descaling without softening. The PFAS level of 8.5 ppt warrants a certified reverse osmosis drinking water filter — Wright-Patterson Air Force Base (Montgomery County — AFFF, directly adjacent to Vandalia and one of the largest PFAS contamination sites in the USA), contributing to Vandalia's very elevated readings.
Geology & Source: Vandalia in Montgomery County draws from the Vandalia Water Division on the Great Miami River (Montgomery County, west-central Ohio) — the Great Miami drains the Till Plain (Silurian Salina Formation evaporitic, Ordovician Maysvillian Limestone — calcareous) — Ohio Montgomery County Great Miami River Silurian-Ordovician calcareous watershed produces very hard water at 217.5 mg/L with TDS 518.2 mg/L.