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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
151–175 of 345Lyon County Water District
KY0720933 · 6,744 served
Vine Grove Water Department
KY0470440 · 6,703 served
Stanton Water Works
KY0990418 · 6,611 served
Campton Water System
KY1190061 · 6,600 served
Western Lewis Rectorville Water District
KY0810366 · 6,534 served
Morehead State University
KY1030480 · 6,500 served
Bracken County Water District
KY0120039 · 6,456 served
Olive Hill Municipal Water Works
KY0220335 · 6,192 served
Cadiz Municipal Water Co
KY1110054 · 6,165 served
Union County Water District
KY1130433 · 6,117 served
Caldwell County Water District
KY0170528 · 6,000 served
Webster Co Water District
KY1170995 · 5,940 served
Science Hill Water Works
KY1000362 · 5,940 served
Kirksville Water Association
KY0760672 · 5,940 served
Carroll Co Water District #1
KY0210066 · 5,934 served
Gallatin County Water District
KY0390130 · 5,860 served
Bloomfield Water & Sewer Dept
KY0900031 · 5,771 served
Wilmore Water Works
KY0570010 · 5,762 served
Greenville Utilities Commission
KY0890170 · 5,649 served
Irvine Municipal Utilities
KY0330205 · 5,649 served
Central City Water & Sewer
KY0890071 · 5,601 served
Williamsburg Water Department
KY1180471 · 5,554 served
Judy Water Association
KY0870147 · 5,539 served
East Pendleton Water District
KY0960112 · 5,515 served
Williamstown Municipal Water Dept
KY0410472 · 5,495 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