Lebanon Water Hardness & Quality Report (2026)
Water Hardness
13.4 grains per gallon
Source
reservoir
pH Level
8.5
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
606.7 mg/L
Est. Daily Cost
$0.61
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 31% efficiency due to mineral buildup.
| Appliance | In Lebanon | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2 yrs | 8.5 yrs | -76% |
| Washing Machine | 5.1 yrs | 12 yrs | -58% |
| Water Heater | 6.4 yrs | 15 yrs | -57% |
Regional Water Comparison
How Lebanon compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Lebanon, Tennessee | 230 mg/L | 7.7 ppt | 🔴 Very Hard | reservoir |
| Mount Juliet, Tennessee | 203.5 mg/L | 6.8 ppt | 🔴 Very Hard | reservoir |
| Gallatin, Tennessee | 140 mg/L | 4.7 ppt | 🟠 Hard | reservoir |
| Smyrna, Tennessee | 190.5 mg/L | 6.4 ppt | 🔴 Very Hard | reservoir |
| Hermitage, Tennessee | 116 mg/L | 3.9 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Lebanon compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lebanon | 230 mg/L | 🔴 High |
| 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, Tennessee, the Wilson County seat — a major central Tennessee Nashville suburban city (Lebanon is the Wilson County seat and one of the most significant Nashville suburban communities — a east Nashville metro city in the Cedar Glades karst landscape that is the namesake of Cedars of Lebanon State Park (the famous Tennessee cedars (actually Eastern Red Cedar) forest karst glades in Wilson County); Lebanon is known for its distinctive 'cedar glade' geology — a rare Ordovician limestone flat bedrock prairie landscape found primarily in Wilson and Rutherford Counties), home of Cumberland University (a historic private university in Lebanon — one of the oldest universities in Tennessee, founded in 1842), a diverse Wilson County community with a significant working-class, country music suburban, and growing Nashville metro professional population, adjacent to Mt. Juliet in the east Nashville corridor, and one of the fastest-growing Nashville suburban communities — draws its municipal water supply from the Cumberland River watershed via the City of Lebanon Water Division. Water hardness in Lebanon measures 230 mg/L — classified as very hard.
Lebanon's very hard supply reflects the Wilson County central Tennessee limestone karst's highly calcareous geology. The Wilson County limestone aquifer draws from the Ordovician Knox Dolomite (highly calcareous dolomite karst). City of Lebanon applies limited softening, producing the very hard 230 mg/L.
At 230 mg/L, Lebanon residents face significant hard water challenges. Regular water softeners and descaling are strongly recommended. City of Lebanon Water Division consistently delivers water meeting all Tennessee TDEC and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Cumberland River (Cedars of Lebanon watershed) via the City of Lebanon Water Division — the Wilson County central Tennessee Nashville suburban Lebanon corridor (Ordovician calcareous Knox Dolomite and Silurian calcareous Stones River Formation — the extremely calcareous central Tennessee Wilson County limestone–dolomite karst; limited softening); very hard supply at 230 mg/L in Wilson County.