Martinsville Water Hardness & Quality Report (2026)
Water Hardness
12.7 grains per gallon
Source
river
pH Level
8.3
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
485.7 mg/L
Est. Daily Cost
$0.58
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 Martinsville, your appliances are currently losing 29% efficiency due to mineral buildup.
| Appliance | In Martinsville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.4 yrs | 8.5 yrs | -72% |
| Washing Machine | 5.6 yrs | 12 yrs | -53% |
| Water Heater | 6.9 yrs | 15 yrs | -54% |
Regional Water Comparison
How Martinsville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Martinsville, Indiana | 217.5 mg/L | 6.9 ppt | 🔴 Very Hard | river |
| Plainfield, Indiana | 186.5 mg/L | 5.8 ppt | 🔴 Very Hard | river |
| Bloomington, Indiana | 143.5 mg/L | 4.2 ppt | 🟠 Hard | river |
| Avon, Indiana | 263 mg/L | 8.5 ppt | 🔴 Very Hard | river |
| Greenwood, Indiana | 209 mg/L | 6.6 ppt | 🔴 Very Hard | river |
National Benchmark
How Martinsville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Martinsville | 217.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Martinsville's Water Unique?
Local geology and source profile
Martinsville, Indiana, in Morgan County — a Morgan County city adjacent to Mooresville and Bargersville on the White River in south-central Indiana — receives its water from the City of Martinsville Water Department, drawing from the White River through the south-central Indiana distribution.
The very hard 217.5 mg/L hardness and high TDS of 485.7 mg/L reflect the Morgan County White River supply's very hard calcareous character — the Mississippian Salem Limestone and Silurian Niagaran Dolomite are both highly calcareous formations that dominate the geology of south-central Indiana (compare Mooresville IN: 214/478 in Morgan County comparable; Bargersville IN: 220/492 in Johnson County comparable; Martinsville consistent very hard from the same Morgan County White River Mississippian-Silurian calcareous supply). The White River at Morgan County — Mississippian Salem Limestone (calcareous — primary hardness contributor), Silurian Niagaran Dolomite (highly dolomitic — secondary contributor), and Quaternary glacial drift (calcareous — TDS contributor).
At 217.5 mg/L with TDS 486, Martinsville's water is very hard — a water softener is strongly recommended to protect plumbing and appliances. Quarterly descaling is appropriate. The PFAS level of 6.9 ppt warrants a certified drinking water filter. Review the City of Martinsville's annual water quality report for the latest contaminant monitoring data.
Geology & Source: Martinsville in Morgan County draws from the Martinsville Water on the White River (Morgan County, south-central Indiana) — the White River at Morgan County drains Mississippian Salem Limestone (calcareous) and Silurian Niagaran Dolomite (highly dolomitic) — Indiana Morgan County White River Mississippian-Silurian calcareous supply produces very hard water at 217.5 mg/L with TDS 485.7 mg/L.