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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
301–325 of 403Surgoinsville Utility District
TN0000682 · 2,609 served
Sneedville U.d.
TN0000640 · 2,607 served
Cowan Board of Public Utilities
TN0000146 · 2,550 served
Jackson County U.d. #2
TN0000817 · 2,512 served
Benton Water System
TN0000048 · 2,491 served
Gibson Co Muni Water Dist #1
TN0000709 · 2,433 served
Decaturville Water System
TN0000186 · 2,384 served
Lincoln Co B.p.u. #2
TN0000884 · 2,350 served
Jackson County U.d. #4
TN0000859 · 2,323 served
Mosheim Utility District
TN0000478 · 2,270 served
Saltillo Utility District
TN0000606 · 2,216 served
Greenfield Water Dept
TN0000276 · 2,189 served
Grandview Utility District
TN0000863 · 2,187 served
Twenty Five Utility District
TN0000718 · 2,159 served
South Paris Water Co-op
TN0000537 · 2,141 served
Eastview Utility District
TN0000570 · 2,134 served
Norris Water Commission
TN0000513 · 2,126 served
Rutledge Water System
TN0000600 · 2,102 served
Troy Water System
TN0000712 · 2,096 served
Spring Creek Utility District
TN0000664 · 2,091 served
Ridgely Water System
TN0000579 · 2,059 served
Rocky Top Water Dept
TN0000383 · 1,963 served
Watertown Water System
TN0000732 · 1,920 served
Venue @ 109
TN0008297 · 1,890 served
Graysville Water Dept
TN0000269 · 1,888 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