Greencastle Water Hardness & Quality Report (2026)
Water Hardness
12.1 grains per gallon
Source
river
pH Level
8.3
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
444 mg/L
Est. Daily Cost
$0.55
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 Greencastle, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Greencastle | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.8 yrs | 8.5 yrs | -67% |
| Washing Machine | 6 yrs | 12 yrs | -50% |
| Water Heater | 7.3 yrs | 15 yrs | -51% |
Regional Water Comparison
How Greencastle compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Greencastle, Indiana | 206.5 mg/L | 6.5 ppt | 🔴 Very Hard | river |
| Crawfordsville, Indiana | 240.5 mg/L | 7.7 ppt | 🔴 Very Hard | river |
| Plainfield, Indiana | 186.5 mg/L | 5.8 ppt | 🔴 Very Hard | river |
| Avon, Indiana | 263 mg/L | 8.5 ppt | 🔴 Very Hard | river |
| Martinsville, Indiana | 217.5 mg/L | 6.9 ppt | 🔴 Very Hard | river |
National Benchmark
How Greencastle compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Greencastle | 206.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Greencastle's Water Unique?
Local geology and source profile
Greencastle, Indiana, in Putnam County — the Putnam County seat adjacent to Cloverdale and Mooresville on the Eel River in west-central Indiana — receives its water from the City of Greencastle Water Department, drawing from the Eel River through the west-central Indiana distribution.
The very hard 206.5 mg/L hardness and TDS of 444 mg/L reflect the Putnam County supply's very hard Indiana Till Plain dolomitic character — the Silurian Niagaran Dolomite and Ordovician Maquoketa Formation are highly dolomitic-calcareous formations in the Indiana Dolomite Plain, and the Eel River acquires substantial dissolved mineral content from its extensive Silurian dolomite drainage (compare Cloverdale IN: 202/434 in Putnam County comparable; Mooresville IN: 210/454 in Morgan County comparable; Greencastle consistent very hard from the same Putnam County Eel River Silurian dolomitic supply). The Eel River watershed — Silurian Niagaran Dolomite (highly dolomitic — primary hardness contributor), Ordovician Maquoketa Formation (calcareous — secondary contributor), and Quaternary Indiana Till Plain glacial till (calcareous — TDS contributor).
At 206.5 mg/L with TDS 444, Greencastle's water is very hard — a water softener is strongly recommended to protect plumbing and appliances. The PFAS level of 6.5 ppt warrants a certified drinking water filter. Review the City of Greencastle's annual water quality report.
Geology & Source: Greencastle in Putnam County draws from the Greencastle Water on the Eel River supply (Putnam County, west-central Indiana) — the Indiana Till Plain at Putnam County draws from Silurian Niagaran Dolomite (highly dolomitic) and Ordovician Maquoketa Formation (calcareous) — Indiana Putnam County Eel River Silurian dolomitic supply produces very hard water at 206.5 mg/L with TDS 444 mg/L.