Athens Water Hardness & Quality Report (2026)
Water Hardness
7.4 grains per gallon
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
229.7 mg/L
Est. Daily Cost
$0.34
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 Athens, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Athens | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.9 yrs | 12 yrs | -26% |
| Water Heater | 10.5 yrs | 15 yrs | -30% |
Regional Water Comparison
How Athens compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Athens, Tennessee | 127.5 mg/L | 4.2 ppt | 🟠 Hard | reservoir |
| Cleveland, Tennessee | 155 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
| Farragut, Tennessee | 157 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
| Soddy-Daisy, Tennessee | 202 mg/L | 6.7 ppt | 🔴 Very Hard | reservoir |
| Middle Valley, Tennessee | 98 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Athens compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Athens | 127.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Athens's Water Unique?
Local geology and source profile
Athens, Tennessee, in McMinn County — the McMinn County seat adjacent to Etowah and Calhoun on the Hiwassee River system in southeast Tennessee — receives its water from Athens Utilities, drawing from Nottely Lake or the Tennessee River system (McMinn County) through the southeast Tennessee distribution.
The moderately hard 127.5 mg/L hardness and TDS of 229.7 mg/L reflect the southeast Tennessee McMinn County Valley and Ridge supply's moderate dolomitic character — softer than the McMinnville Highland Rim communities (212 mg/L) due to the east Tennessee Valley and Ridge position where the Ordovician Knox Dolomite contributes moderate hardness, blended with the TVA reservoir dilution effect. The McMinn County Valley and Ridge watershed — Ordovician Knox Dolomite (dolomitic — primary hardness contributor), Cambrian Conasauga Shale (slightly calcareous — minor contributor), and Precambrian Blue Ridge basement (insoluble — dilutant from upper watershed tributaries).
At 127.5 mg/L, Athens' water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 4.2 ppt warrants a certified drinking water filter — the McMinn County southeast Tennessee industrial corridor contribute to Athens' readings.
Geology & Source: Athens in McMinn County draws from the Athens Utilities on Nottely Lake or the Tennessee River system (McMinn County, southeast Tennessee) — the watershed drains the Valley and Ridge (Ordovician Knox Dolomite — dolomitic) and Cambrian Conasauga Shale (slightly calcareous) — Tennessee McMinn County Valley and Ridge Ordovician dolomitic reservoir produces moderately hard water at 127.5 mg/L with TDS 229.7 mg/L.