East Chattanooga Water Hardness & Quality Report (2026)
Water Hardness
11.4 grains per gallon
Source
reservoir
pH Level
8.3
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
459.6 mg/L
Est. Daily Cost
$0.52
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 East Chattanooga, your appliances are currently losing 26% efficiency due to mineral buildup.
| Appliance | In East Chattanooga | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.1 yrs | 8.5 yrs | -64% |
| Washing Machine | 6.4 yrs | 12 yrs | -47% |
| Water Heater | 7.8 yrs | 15 yrs | -48% |
Regional Water Comparison
How East Chattanooga compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ East Chattanooga, Tennessee | 195.5 mg/L | 6.5 ppt | 🔴 Very Hard | reservoir |
| East Ridge, Tennessee | 206 mg/L | 6.9 ppt | 🔴 Very Hard | reservoir |
| Chattanooga, Tennessee | 233.5 mg/L | 7.8 ppt | 🔴 Very Hard | reservoir |
| East Brainerd, Tennessee | 195.5 mg/L | 6.5 ppt | 🔴 Very Hard | reservoir |
| Middle Valley, Tennessee | 98 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How East Chattanooga compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ East Chattanooga | 195.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes East Chattanooga's Water Unique?
Local geology and source profile
East Chattanooga, a section of greater Chattanooga in Hamilton County, Tennessee, receives its water supply from Tennessee American Water (a division of American Water) through the same treatment and distribution infrastructure that serves the broader Chattanooga metropolitan area. Raw water is drawn from the Tennessee River at Chickamauga Lake — a TVA impoundment created by Chickamauga Dam — and treated at the Moccasin Bend Water Treatment Plant before distribution to both central Chattanooga and the east Chattanooga zone. Water hardness in East Chattanooga measures 195.5 mg/L — classified as hard, reflecting the Tennessee River's characteristic Valley and Ridge carbonate water quality.
East Chattanooga's hard supply is rooted in the rich carbonate geology of the Tennessee River watershed through East Tennessee's Great Valley. The Tennessee River at Chickamauga Lake collects drainage from a vast highland watershed that crosses the Valley and Ridge physiographic province — where alternating bands of Ordovician Chickamauga Limestone and Knox Dolomite, Cambrian Conasauga Formation limestone and shale, and Cambrian Rome Formation produce one of the most calcium-rich river systems in the eastern United States. The slight difference in hardness from central Chattanooga to East Chattanooga reflects point-of-use variation within the distribution network rather than a fundamentally different source.
At 195.5 mg/L, East Chattanooga residents face regular limescale build-up. White calcium deposits accumulate on showerheads, faucet aerators, tile, and inside kettles within weeks — monthly cleaning with citric acid or vinegar solution is a standard maintenance routine. Dishwashers produce consistently cleaner glassware with rinse-aid, and water heaters benefit from annual inspection for element scale accumulation. Tennessee American Water consistently delivers EPA-compliant water throughout the Chattanooga distribution system, meeting all Tennessee TDEC Safe Drinking Water standards.
Geology & Source: Reservoir supply from the Tennessee River at Chickamauga Lake — the river crosses the Great Valley of East Tennessee's Ordovician Chickamauga Limestone, Knox Dolomite, and Cambrian carbonate formations, releasing high calcium bicarbonate from the Appalachian Valley and Ridge province's ancient marine carbonate sequences, producing hard supply at 195.5 mg/L.