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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
151–175 of 403Dunlap Water System
TN0000205 · 9,782 served
Jefferson City W&s Comm
TN0000328 · 9,764 served
Jasper Water Dept
TN0000325 · 9,702 served
Linden Water Dept
TN0000404 · 9,568 served
Mountain City Water Dept
TN0000479 · 9,304 served
Waverly Water Department
TN0000733 · 9,270 served
Walden's Ridge U.d.
TN0000635 · 9,265 served
Lauderdale Co Water System
TN0000581 · 9,254 served
Second South Cheatham U.d.
TN0000645 · 9,243 served
Greenbrier Water & Sewer Dept
TN0000271 · 9,230 served
Big Creek Utility District
TN0000122 · 9,211 served
Atoka Water System
TN0000033 · 9,197 served
Ashland City Water Department
TN0000023 · 9,173 served
First U.d. of Carter County
TN0000094 · 9,143 served
First U.d. of Tipton County
TN0000703 · 9,017 served
Cookeville Boat Dock Rd U.d.
TN0000134 · 8,966 served
Millington Water Dept
TN0000463 · 8,935 served
Henderson Water Dept
TN0000293 · 8,924 served
Mount Pleasant Water Sys #1
TN0000488 · 8,914 served
Smith Utility District
TN0000636 · 8,913 served
Gatlinburg Water Dept
TN0000256 · 8,877 served
Byrdstown Water Department
TN0000088 · 8,658 served
West Overton Utility District
TN0000578 · 8,628 served
County Wide Utility District
TN0000006 · 8,528 served
Cross Anchor Utility District
TN0000149 · 8,449 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