State Hub
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
251–275 of 403Allardt Water Works
TN0000010 · 4,058 served
Dover Water Dept
TN0000193 · 4,037 served
Northeast Lawrence U.d.
TN0000389 · 4,017 served
Northwest Dyersburg U.d.
TN0000518 · 3,996 served
Fall River Rd Utility District
TN0000239 · 3,988 served
Wartrace Water System
TN0000730 · 3,983 served
Niota Water System
TN0000510 · 3,932 served
South Fulton Water System
TN0000648 · 3,932 served
Watts Bar East U.d.
TN0000969 · 3,927 served
Jackson County U.d. #3
TN0000845 · 3,917 served
Riceville Utility District
TN0000576 · 3,843 served
Vanleer Water Department
TN0000724 · 3,831 served
North U.dep. of Decatur/benton Co
TN0000883 · 3,818 served
Englewood Water Dept
TN0000224 · 3,742 served
Brighton Water System
TN0000070 · 3,715 served
Mason Water Dept
TN0000440 · 3,642 served
North U.d. of Rhea County
TN0000970 · 3,640 served
Carthage Water System
TN0000095 · 3,624 served
River Road Utility District
TN0000582 · 3,613 served
Mcewen Waterworks
TN0000420 · 3,594 served
Cumberland Heights U.d.
TN0000166 · 3,561 served
East Fork U.d.
TN0000853 · 3,538 served
Dyersburg Suburban C.u.d.
TN0000212 · 3,538 served
Hampton Utility District
TN0000282 · 3,529 served
Chapel Hill Water System
TN0000104 · 3,426 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
Quick Links
Data source: Utility data from EPA SDWIS. 403 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-19