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Kentucky Water Quality
345
Utilities in database
5.0M
Residents served
32%
On private wells
2
Key contaminants tracked
Drinking Water in Kentucky
Kentucky has 345 community water systems serving approximately 5.0 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, nitrates. 32% of Kentucky residents rely on private wells. DWR holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Kentucky
126–150 of 345So Anderson Water District
KY0030660 · 8,417 served
Knox County Utility Commission
KY0610110 · 8,313 served
Harrodsburg Municipal Water Department
KY0840180 · 8,310 served
Louisa Water Department
KY0640257 · 8,236 served
Farmdale Water District
KY0370128 · 8,203 served
Benton Water & Sewer
KY0790029 · 7,981 served
Us 60 Water District
KY1060436 · 7,892 served
Lebanon Water Works Co Inc
KY0780241 · 7,642 served
Morgan County Water District
KY0880594 · 7,502 served
Jamestown Municipal Water Works
KY1040210 · 7,402 served
East Clark Co Water District
KY0250981 · 7,366 served
Cynthiana Municipal Water Works
KY0490096 · 7,263 served
Jonathan Creek Water District
KY0790216 · 7,182 served
Powell Valley Water District
KY0990357 · 7,128 served
Cumberland Co Water District
KY0290271 · 7,099 served
Muhlenberg Co Water District #3
KY0890304 · 7,075 served
Knott Co Water & Sewer District
KY0600062 · 7,056 served
Princeton Water & Sewer Commission
KY0170360 · 7,007 served
West Shelby Water District
KY1060457 · 6,994 served
Vanceburg Electric Plant Board
KY0680438 · 6,921 served
Scottsville Water Department
KY0020386 · 6,864 served
Lake Village Water Association
KY0840587 · 6,855 served
Carrollton Utilities
KY0210067 · 6,851 served
Jessamine Co Water District #1
KY0570214 · 6,831 served
City of South Shore Water Works
KY0450410 · 6,798 served
Key Contaminant Concerns in Kentucky
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always from human activity — nitrate interferes with the blood's ability to carry oxygen. The United States produces over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Kentucky Water FAQs
Quick Links
Data source: Utility data from EPA SDWIS. 345 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-22