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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
226–250 of 345Hickman Water Department
KY0380193 · 3,191 served
Corinth Water District
KY0410662 · 3,139 served
Hartford Municipal Water Works
KY0920181 · 3,119 served
Lewisburg Water Works
KY0710247 · 3,119 served
Evarts Municipal Water Plant
KY0480125 · 3,059 served
Marion Water Department
KY0280267 · 3,039 served
Salyersville Municipal Water
KY0770566 · 3,029 served
Western Mason Co Water District
KY0810460 · 2,994 served
North Mclean Co Water District
KY0300320 · 2,934 served
Garrison Quincy Heights Water District
KY0680153 · 2,908 served
Brandenburg Water Works
KY0820041 · 2,880 served
Lebanon Junction Water Works
KY0150242 · 2,866 served
Cumberland Municipal Water Works
KY0480092 · 2,843 served
Elkton Water Works
KY1100121 · 2,780 served
Horse Cave Water System
KY0500476 · 2,744 served
Ledbetter Water District
KY0700243 · 2,729 served
Letcher County Water District
KY0670462 · 2,673 served
Ne Woodford Co Water District
KY1200310 · 2,644 served
Perry County Water & Sewer
KY0970484 · 2,642 served
Dawson Springs Water & Sewer
KY0540958 · 2,631 served
Morgantown Water System
KY0160294 · 2,628 served
Nortonville Water Works
KY0540328 · 2,611 served
Jenkins Water System
KY0670213 · 2,609 served
Burkesville Water Works
KY0290049 · 2,566 served
Eminence Water Works
KY0520122 · 2,554 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
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Data source: Utility data from EPA SDWIS. 345 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-22