Owensboro Water Hardness & Quality Report (2026)
Water Hardness
3.7 grains per gallon
Source
river
pH Level
7.3
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
99.4 mg/L
Est. Daily Cost
$0.17
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 Owensboro, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In Owensboro | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.5 yrs | 8.5 yrs | -12% |
| Washing Machine | 11.2 yrs | 12 yrs | -7% |
| Water Heater | 13 yrs | 15 yrs | -13% |
Regional Water Comparison
How Owensboro compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Owensboro, Kentucky | 64 mg/L | 3 ppt | 🟡 Moderately Hard | river |
| Henderson, Kentucky | 173.5 mg/L | 5.6 ppt | 🟠 Hard | river |
| Evansville, Indiana | 141.5 mg/L | 4.1 ppt | 🟠 Hard | river |
| Madisonville, Kentucky | 174.5 mg/L | 5.6 ppt | 🟠 Hard | river |
| Jasper, Indiana | 131 mg/L | 3.8 ppt | 🟠 Hard | river |
National Benchmark
How Owensboro compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Owensboro | 64 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Owensboro's Water Unique?
Local geology and source profile
Owensboro, Kentucky, the Daviess County seat on the south bank of the Ohio River — western Kentucky's largest city, the 'BBQ Capital of the World' and a major regional hub known for its riverfront revitalization and bluegrass–country music heritage — draws its municipal water supply from the Ohio River via the Owensboro Municipal Utilities (OMU) Water Plant, treating Ohio River water for the Owensboro area. Water hardness in Owensboro measures 64 mg/L — classified as moderately soft.
Owensboro's moderate softness reflects the Ohio River's dilution characteristic at the western Kentucky intake. The Ohio River at Owensboro carries the blended runoff of the entire upper Ohio Valley — including the soft headwater streams from the Allegheny Plateau crystalline and sandstone terrain and the harder calcareous Indiana–Kentucky Mississippian carbonate drainage. By the time the Ohio River reaches Owensboro in the western Kentucky lower Ohio Valley, the flow volume is enormous (the Ohio River is one of the largest US rivers by discharge), diluting the calcareous Kentucky tributary input substantially. The resulting moderate 64 mg/L reflects this dilution, producing softer supply than many other Kentucky communities using local carbonate groundwater.
With hardness at 64 mg/L, Owensboro residents enjoy moderately soft water with minimal scale challenges. Owensboro Municipal Utilities consistently delivers water meeting all Kentucky EPPC and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Ohio River via the Owensboro Municipal Utilities (OMU) Water Plant — the Upper Ohio River watershed draining the Indiana–Kentucky Mississippian limestone and Pennsylvanian coal-bearing calcareous formations of Daviess County; moderately soft supply at 64 mg/L — reflecting the Ohio River's dilution of the calcareous Kentucky watershed.