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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
176–200 of 345Mckinney Water District
KY0690278 · 5,423 served
Hustonville Water Works
KY0690203 · 5,420 served
Frenchburg Water Company
KY0830148 · 5,401 served
Booneville Water and Sewer
KY0950036 · 5,346 served
Jeffersonville Water System
KY0870212 · 5,335 served
North Manchester Water Assoc
KY0260266 · 5,332 served
South Logan Water Association
KY0710707 · 5,198 served
Russell Water Company
KY0450376 · 5,181 served
Morganfield Water Works
KY1130293 · 5,170 served
Bronston Water Associaton Inc
KY1000043 · 5,114 served
Breathitt Co Water District
KY0131012 · 5,068 served
Graves Co Water Dist - Consumers
KY0420084 · 5,016 served
Mammoth Cave/central System
KY0310940 · 5,000 served
Mt Vernon Water Works
KY1020299 · 4,951 served
Jackson Municipal Water Works
KY0130208 · 4,704 served
Nebo Water District
KY0540977 · 4,702 served
Fulton Municipal Water System
KY0380149 · 4,662 served
Hodgenville Water Works
KY0620200 · 4,629 served
Flemingsburg Utility System
KY0350134 · 4,583 served
Harlan Municipal Water Works
KY0480178 · 4,574 served
Lancaster Water Works
KY0400233 · 4,573 served
Providence Water Works
KY1170361 · 4,538 served
Buffalo Trail Water Assoc
KY0810046 · 4,514 served
Cawood Water District
KY0480565 · 4,428 served
Calvert City Municipal Water Department
KY0790056 · 4,381 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