Red Bank Water Hardness & Quality Report (2026)
Water Hardness
7.5 grains per gallon
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
233.4 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 Red Bank, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Red Bank | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.8 yrs | 12 yrs | -27% |
| Water Heater | 10.5 yrs | 15 yrs | -30% |
Regional Water Comparison
How Red Bank compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Red Bank, Tennessee | 128.5 mg/L | 4.3 ppt | 🟠 Hard | reservoir |
| East Chattanooga, Tennessee | 195.5 mg/L | 6.5 ppt | 🔴 Very Hard | reservoir |
| Chattanooga, Tennessee | 233.5 mg/L | 7.8 ppt | 🔴 Very Hard | reservoir |
| East Ridge, Tennessee | 206 mg/L | 6.9 ppt | 🔴 Very Hard | reservoir |
| Middle Valley, Tennessee | 98 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Red Bank compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Red Bank | 128.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Red Bank's Water Unique?
Local geology and source profile
Red Bank, Tennessee, in Hamilton County — a Hamilton County city adjacent to Chattanooga and Signal Mountain on the Tennessee River bend in southeast Tennessee — receives its water from Tennessee-American Water, drawing from Chickamauga Lake (a Tennessee River impoundment) through the southeast Tennessee distribution.
The moderately hard 128.5 mg/L hardness and TDS of 233.4 mg/L reflect the Hamilton County Tennessee River supply's moderate calcareous character — the Ordovician Knox Dolomite and Cambrian Rome Formation of the Valley and Ridge Province are both calcareous formations that define the geology of the Chattanooga area, producing the typical moderate hardness of southeast Tennessee river water (compare Signal Mountain TN: 126/229 in Hamilton County comparable; Chattanooga TN: 130/238 in Hamilton County comparable; Red Bank consistent moderate from the same Hamilton County Chickamauga Lake Ordovician-Cambrian calcareous supply). The Tennessee River at Hamilton County — Ordovician Knox Dolomite (slightly dolomitic — primary hardness contributor), Cambrian Rome Formation (calcareous — secondary contributor), and Quaternary Tennessee alluvium (slightly calcareous — minor TDS).
At 128.5 mg/L with TDS 233, Red Bank's water is moderately hard — mild scale buildup in appliances over time. Semi-annual descaling is appropriate. The PFAS level of 4.3 ppt is moderate — a certified drinking water filter provides added protection. Review Tennessee-American Water's annual water quality report for the latest data.
Geology & Source: Red Bank in Hamilton County draws from Tennessee-American Water on Chickamauga Lake (Hamilton County, southeast Tennessee) — the Tennessee River drains Ordovician Knox Dolomite (slightly dolomitic) and Cambrian Rome Formation (calcareous) — Tennessee Hamilton County Chickamauga Lake Ordovician-Cambrian calcareous supply produces moderately hard water at 128.5 mg/L with TDS 233.4 mg/L.