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Tennessee Water Quality
403
Utilities in database
7.8M
Residents served
22%
On private wells
2
Key contaminants tracked
Drinking Water in Tennessee
Tennessee has 403 community water systems serving approximately 7.8 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, nitrates. 22% of Tennessee residents rely on private wells. TDEC holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Tennessee
76–100 of 403Lawrenceburg Utility Systems
TN0000392 · 21,244 served
Ocoee Utility District
TN0000525 · 21,082 served
First U.d. of Hawkins County
TN0000109 · 20,851 served
Northwest Utility District
TN0000169 · 20,794 served
Selmer Water System
TN0000615 · 20,648 served
Russellville Whitesburg U.d.
TN0000598 · 20,197 served
Dyersburg Water Dept
TN0000211 · 19,970 served
Gladeville Utility District
TN0000264 · 19,813 served
Poplar Grove Utility District
TN0000201 · 19,599 served
Savannah Utility Dept
TN0000611 · 19,495 served
Alpha-talbott Utility District
TN0000014 · 19,075 served
Mcminnville Water Dept
TN0000423 · 19,029 served
West Warren-viola U.d.
TN0000742 · 19,009 served
Pleasant View Utility District
TN0000558 · 18,854 served
Clinton Utilities Board
TN0000120 · 18,772 served
East Montgomery U.d.
TN0000218 · 18,382 served
Dekalb Utility District #1
TN0000188 · 17,960 served
Glen Hills Utility District
TN0000266 · 17,355 served
Fentress County U.d.
TN0000244 · 16,845 served
Harriman Utility Board
TN0000287 · 16,653 served
Union City Water Dept
TN0000720 · 16,180 served
Claiborne Utilities District
TN0000113 · 16,135 served
Cunningham Utility District
TN0000167 · 16,068 served
Loudon Utilities Board
TN0000409 · 16,047 served
Livingston Water Dept
TN0000405 · 15,733 served
Key Contaminant Concerns in Tennessee
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.
Tennessee Water FAQs
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Data source: Utility data from EPA SDWIS. 403 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-19