Avon Water Hardness & Quality Report (2026)
Water Hardness
15.4 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
676.6 mg/L
Est. Daily Cost
$0.70
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 Avon, your appliances are currently losing 35% efficiency due to mineral buildup.
| Appliance | In Avon | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.9 yrs | 12 yrs | -68% |
| Water Heater | 5.1 yrs | 15 yrs | -66% |
Regional Water Comparison
How Avon compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Avon, Indiana | 263 mg/L | 8.5 ppt | 🔴 Very Hard | river |
| Plainfield, Indiana | 186.5 mg/L | 5.8 ppt | 🔴 Very Hard | river |
| Fairfield Heights, Indiana | 162 mg/L | 4.9 ppt | 🟠 Hard | river |
| Brownsburg, Indiana | 167 mg/L | 5.1 ppt | 🟠 Hard | river |
| Zionsville, Indiana | 128.5 mg/L | 3.7 ppt | 🟠 Hard | river |
National Benchmark
How Avon compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Avon | 263 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Avon's Water Unique?
Local geology and source profile
Avon, Indiana, in Hendricks County — a Hendricks County town adjacent to Plainfield and Brownsburg in the west Indianapolis metro — receives its municipal water from Citizens Energy Group, drawing from the White River (Hendricks-Marion County) through the Indianapolis water treatment system.
The very hard 263 mg/L hardness and elevated TDS of 676.6 mg/L reflect the west Indianapolis White River supply's intense carbonate character — harder than the Broad Ripple Indianapolis reading (161 mg/L), likely reflecting the Hendricks County distribution zone receiving a higher proportion of unblended hard White River water or drawing from a different supply zone. The White River at Hendricks County drains the Indiana Till Plain — Silurian Niagara Dolomite (the dominant Indiana carbonate platform), Devonian Traverse Limestone (very calcareous), and calcareous Pleistocene Huron Lobe till (ground-up dolomite and limestone from the Wisconsin Glaciation).
At 263 mg/L, Avon's water is very hard. A water softener is strongly recommended. Scale builds rapidly on heating surfaces and appliances, and water heaters require annual descaling without softening. The PFAS level of 8.5 ppt warrants a certified reverse osmosis drinking water filter — the Hendricks County west Indianapolis industrial corridor (Indianapolis suburban manufacturing), and the central Indiana PFAS background from defense industry and agricultural sources contribute to Avon's elevated readings.
Geology & Source: Avon in Hendricks County draws from Citizens Energy Group on the White River (Hendricks County, west Indianapolis metro) — the White River drains the Indiana Till Plain (Silurian Niagara Dolomite, Devonian Traverse Limestone, calcareous Pleistocene Huron Lobe till) — Indiana Hendricks County White River Silurian-Devonian carbonate watershed produces very hard water at 263 mg/L with TDS 676.6 mg/L in this Hendricks County Indiana town.