Lebanon Water Hardness & Quality Report (2026)
Water Hardness
2.1 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
69.5 mg/L
Est. Daily Cost
$0.10
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 Lebanon, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Lebanon | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.4 yrs | 8.5 yrs | -1% |
| Washing Machine | 12.2 yrs | 12 yrs | — |
| Water Heater | 14.1 yrs | 15 yrs | -6% |
Regional Water Comparison
How Lebanon compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lebanon, New Hampshire | 36.5 mg/L | 5.3 ppt | 🟢 Soft | reservoir |
| Claremont, New Hampshire | 70.5 mg/L | 8 ppt | 🟡 Moderately Hard | reservoir |
| Keene, New Hampshire | 27 mg/L | 4.5 ppt | 🟢 Soft | reservoir |
| Rutland, Vermont | 30.5 mg/L | 2.1 ppt | 🟢 Soft | reservoir |
| Laconia, New Hampshire | 32 mg/L | 4.9 ppt | 🟢 Soft | reservoir |
National Benchmark
How Lebanon compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lebanon | 36.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Lebanon's Water Unique?
Local geology and source profile
Lebanon, New Hampshire, in Grafton County — the Grafton County seat adjacent to Hanover and White River Junction VT on the Connecticut River in west-central New Hampshire — receives its water from the Lebanon Water Division, drawing from Mascoma Lake or the Mascoma River (Grafton County) through the west-central New Hampshire distribution.
The very soft 36.5 mg/L hardness and low TDS of 69.5 mg/L reflect the west-central New Hampshire Grafton County White Mountains supply's very soft character — driven by the White Mountains Devonian granite and Ordovician volcanic terrain with insoluble bedrock yielding almost no mineral dissolution, typical of New Hampshire mountain watershed communities (compare Lebanon NH to other NH-VT communities with similar soft granite supplies). The Mascoma watershed at Grafton County — Devonian Kinsman Granite (insoluble — primary dilutant), Ordovician Ammonoosuc Volcanics (insoluble — dilutant), and minor Silurian calcareous formations (slightly calcareous — trace hardness contributor).
At 36.5 mg/L, Lebanon's water is very soft — no scale buildup, appliances last their full service life, and no softening is needed. Water is safe for all uses. The PFAS level of 5.3 ppt warrants a certified drinking water filter — the Grafton County west-central New Hampshire corridor and legacy military sites contribute to Lebanon's readings.
Geology & Source: Lebanon in Grafton County draws from the Lebanon Water Division on Mascoma Lake or the Mascoma River (Grafton County, west-central New Hampshire) — the Mascoma watershed drains the White Mountains (Devonian Kinsman Granite — insoluble) and Ordovician Ammonoosuc Volcanics (insoluble) — New Hampshire Grafton County Mascoma watershed White Mountains Devonian crystalline supply produces very soft water at 36.5 mg/L with TDS 69.5 mg/L.