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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
201–225 of 403Westmoreland Water System
TN0000738 · 6,330 served
Bristol-bluff City U.d.
TN0000079 · 6,268 served
Bolivar Water System
TN0000063 · 6,251 served
South Elizabethton U.d.
TN0000646 · 6,244 served
Old Gainesboro Road U.d.
TN0000135 · 6,214 served
Sevier County Water Department
TN0008279 · 6,194 served
Huntingdon Water Dept
TN0000316 · 6,167 served
Red Boiling Springs W.s.
TN0000572 · 6,050 served
Warren County Util Dist #2
TN0000655 · 6,022 served
North Stewart Utility District
TN0000195 · 5,983 served
Sewanee Utility District
TN0000623 · 5,970 served
West Robertson Water Authority
TN0000001 · 5,915 served
Witt Utility District
TN0000650 · 5,771 served
New Market Utility District
TN0000499 · 5,703 served
Tracy City Water System
TN0000706 · 5,692 served
West Cumberland U.d.
TN0000557 · 5,659 served
North Greene Utilities, Inc.
TN0000274 · 5,604 served
Summertown Utility District
TN0000676 · 5,593 served
Celina Water System
TN0000099 · 5,510 served
Mckenzie Water Dept
TN0000421 · 5,495 served
Pikeville Water System
TN0000551 · 5,486 served
Friendsville Water Works
TN0000249 · 5,437 served
Fall Creek Falls U.d.
TN0000552 · 5,434 served
Oliver Springs Water Board
TN0000523 · 5,361 served
Waynesboro Water System
TN0000736 · 5,354 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