Speedway Water Hardness & Quality Report (2026)
Water Hardness
8.9 grains per gallon
Source
river
pH Level
7.9
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
266.3 mg/L
Est. Daily Cost
$0.41
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 Speedway, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Speedway | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.6 yrs | 8.5 yrs | -46% |
| Washing Machine | 8 yrs | 12 yrs | -33% |
| Water Heater | 9.5 yrs | 15 yrs | -37% |
Regional Water Comparison
How Speedway compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Speedway, Indiana | 152.5 mg/L | 4.5 ppt | 🟠 Hard | river |
| Indianapolis, Indiana | 277.5 mg/L | 9 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 |
| Avon, Indiana | 263 mg/L | 8.5 ppt | 🔴 Very Hard | river |
National Benchmark
How Speedway compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Speedway | 152.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Speedway's Water Unique?
Local geology and source profile
Speedway, Indiana, in Marion County — a Marion County town adjacent to Indianapolis and home to the Indianapolis Motor Speedway in central Indiana — receives its water from Citizens Energy Group, drawing from the White River and Eagle Creek Reservoir through the central Indiana Indianapolis metropolitan distribution.
The hard 152.5 mg/L hardness and TDS of 266.3 mg/L reflect the Marion County White River supply's hard dolomitic character — the Silurian Niagaran Dolomite and Devonian Columbus Limestone are pervasive beneath central Indiana's glaciated plain, contributing dolomitic and calcareous minerals to the watershed (compare Indianapolis IN: 150/262 in Marion County comparable; Carmel IN: 155/270 in Hamilton County comparable; Speedway consistent hard from the same Marion County White River Silurian-Devonian dolomitic supply). The White River at Marion County — Silurian Niagaran Dolomite (dolomitic — primary hardness contributor), Devonian Columbus Limestone (calcareous — secondary contributor), and Quaternary glacial till (calcareous — TDS contributor).
At 152.5 mg/L with TDS 266, Speedway's water is hard — scale builds in appliances and fixtures over months. Quarterly descaling is appropriate. The PFAS level of 4.5 ppt is moderate — a certified drinking water filter provides added protection. Citizens Energy Group publishes detailed annual water quality reports covering all regulated and emerging contaminants for the Indianapolis metro service area.
Geology & Source: Speedway in Marion County draws from the Citizens Energy Group on the White River (Marion County, central Indiana) — the White River at Marion County drains Silurian Niagaran Dolomite (dolomitic) and Devonian Columbus Limestone (calcareous) — Indiana Marion County White River Silurian-Devonian dolomitic supply produces hard water at 152.5 mg/L with TDS 266.3 mg/L.