Shelbyville Water Hardness & Quality Report (2026)
Water Hardness
7.3 grains per gallon
Source
river
pH Level
7.7
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
190.9 mg/L
Est. Daily Cost
$0.33
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 Shelbyville, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Shelbyville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.5 yrs | 8.5 yrs | -35% |
| Washing Machine | 9 yrs | 12 yrs | -25% |
| Water Heater | 10.6 yrs | 15 yrs | -29% |
Regional Water Comparison
How Shelbyville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Shelbyville, Indiana | 124.5 mg/L | 3.5 ppt | 🟠 Hard | river |
| Greenfield, Indiana | 207 mg/L | 6.5 ppt | 🔴 Very Hard | river |
| Franklin, Indiana | 198 mg/L | 6.2 ppt | 🔴 Very Hard | river |
| Greenwood, Indiana | 209 mg/L | 6.6 ppt | 🔴 Very Hard | river |
| Columbus, Indiana | 228 mg/L | 7.3 ppt | 🔴 Very Hard | river |
National Benchmark
How Shelbyville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Shelbyville | 124.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Shelbyville's Water Unique?
Local geology and source profile
Shelbyville, Indiana, in Shelby County — the Shelby County seat in central Indiana on the Flat Rock River, a manufacturing and county seat city adjacent to Greensburg in the Indiana Till Plain corridor — receives its municipal water from the Shelbyville Water Utility, drawing from the Flat Rock River or Blue River watershed in the central Indiana Shelby County area.
The moderately hard 124.5 mg/L hardness and TDS of 190.9 mg/L reflect the Flat Rock River watershed's Indiana calcareous till plain character. The Flat Rock River drains the central Indiana Till Plain — terrain underlain by the Silurian Niagara Dolomite and Devonian Jeffersonville Limestone, with an extensive veneer of calcareous Pleistocene Illinoian glacial till. The moderate hardness is typical of the central Indiana River supply systems — softer than the deep Silurian dolomite groundwater wells but consistent with the mixed till-plain surface water character of the Shelby County corridor.
At 124.5 mg/L, Shelbyville's 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 3.5 ppt warrants a certified drinking water filter — the Indianapolis aerospace-defense industrial corridor (Marion County, upstream Blue River watershed), the central Indiana agricultural PFAS background, and the Shelby County industrial manufacturing corridor contribute to Shelbyville's readings.
Geology & Source: Shelbyville in Shelby County draws from the Shelbyville Water Utility on the Flat Rock River or the Blue River (Shelby County) — the Flat Rock and Blue Rivers drain the Indiana Till Plain (Pleistocene calcareous glacial till over Silurian and Devonian dolomite and limestone) — Indiana calcareous glacial till and Silurian dolomite drainage produces moderately hard water at 124.5 mg/L with TDS 191 mg/L in this Shelby County Indiana city.