Is Kentucky Tap Water Safe to Drink?

Water quality data for 13 cities across Kentucky. Find your city below.

Water quality in Kentucky varies significantly from city to city. Across 13 cities we track, hardness ranges from 85 PPM in London to 160 PPM in Georgetown, with a statewide average of 139 PPM. 12 of 13 cities have hard water above 120 PPM where a water softener provides measurable benefits.

6 Kentucky cities have forever chemicals (PFAS) above the EPA's 2024 limit of 4 parts per trillion: Georgetown (60.18 ppt), Owensboro (5 ppt), Elizabethtown (36.6 ppt), Louisville (18 ppt), Louisville Downtown (18 ppt), and 1 more. A reverse osmosis system or NSF P473-certified filter can reduce PFAS to safe levels.

13
Cities
139
Avg Hardness (PPM)
160
Hardest City (PPM)

Complete Kentucky Guide

Statewide water quality overview, costs, and treatment recommendations.

Well Water in Kentucky

Testing, treatment, and common issues for private wells.

Hardest Water Rankings

Kentucky cities ranked by water hardness level.

City Treatment Guides

Sized recommendations based on each city's specific water data.

Lexington South

150 PPM 🧂 Best Softener

Louisville

130 PPM · 18 ppt PFAS 🧂 Best Softener 🔬 Best Filter

Louisville Downtown

130 PPM · 18 ppt PFAS 🧂 Best Softener 🔬 Best Filter

Lexington

124 PPM 🧂 Best Softener

City Comparisons

Georgetown vs London

Side-by-side water quality comparison.

Georgetown vs Bowling Green

Side-by-side water quality comparison.

Bowling Green vs Owensboro

Side-by-side water quality comparison.

More for Kentucky

Softener Cost in LouisvilleSoftener Cost in Louisville Downtown

Kentucky Cities by Water Hardness

CityHardness (PPM)LevelPFAS (ppt)Source
Georgetown 160 Hard 60.18 Royal Springs & Elkhorn Creek
Bowling Green 158 Hard 0 Barren River
Owensboro 157 Hard 5 Ohio River
Richmond 155 Hard 0 Kentucky River
Elizabethtown 150 Hard 36.6 Hardin County Water District wells
Lexington South 150 Hard 25.28 Kentucky River
Florence 145 Hard 0 Ohio River
Covington 140 Hard 3.53 Ohio River
Louisville 130 Hard 18 Ohio River
Louisville Downtown 130 Hard 18 Ohio River
Lexington 124 Hard 25.28 Kentucky River
Paducah 120 Hard 26.3 Ohio River
London 85 Moderately Hard 3.2 Laurel River Lake

Frequently Asked Questions About Kentucky Water

Is Kentucky tap water safe to drink?
Kentucky tap water meets EPA legal standards in most cities. 6 cities have PFAS levels above the EPA health advisory of 4 ppt. The statewide average hardness of 139 PPM means most homes deal with hard water effects like scale buildup, though hardness is not a health concern. Check your specific city above for detailed data.
Do I need a water softener in Kentucky?
It depends on your city. Kentucky averages 139 PPM overall, but hardness varies significantly. 92% of cities exceed 120 PPM. Look up your city above to see if you need one.
Which Kentucky city has the hardest water?
Georgetown has the hardest water in Kentucky at 160 PPM (9.4 GPG). Bowling Green is second at 158 PPM. See the full ranking.
What contaminants are in Kentucky water?
The most common concerns across Kentucky are hard water minerals (calcium and magnesium), and PFAS (forever chemicals) detected in 6 cities. Each city has different levels - check your city above for specific contaminant data.
How much does a water softener cost in Kentucky?
A whole-house water softener for a typical Kentucky home costs $800-$2,500 installed, depending on capacity and brand. At 139 PPM average hardness, most homes need a 32,000-48,000 grain system. Full cost breakdown.

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Guides

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Common Issues

Hard Water PFAS Lead Chlorine