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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
351–375 of 403Lakeview U.d. East
TN0008288 · 1,324 served
Atwood Water System
TN0000035 · 1,311 served
Clearfork Utility District
TN0000826 · 1,305 served
Deerfield Water System, Llc
TN0000912 · 1,299 served
Rossville Water System
TN0000597 · 1,297 served
Jasper Highlands Water System
TN0008286 · 1,280 served
Bradford Water System
TN0000067 · 1,276 served
Sharon Water System
TN0000627 · 1,236 served
Roan Mountain Utility District
TN0000584 · 1,226 served
Copperhill Water Dept
TN0000136 · 1,217 served
Chalet Village North
TN0000849 · 1,203 served
Big Sandy Water Department
TN0000051 · 1,170 served
Gallaway Water Dept
TN0000254 · 1,158 served
Aqua Utilities
TN0000948 · 1,155 served
Sardis Water System
TN0000609 · 1,134 served
Carderview Utility District
TN0000085 · 1,130 served
Northwest Henry Co. U.d.
TN0000838 · 1,116 served
Griffith Creek U.d.
TN0000278 · 1,104 served
Petersburg Water System
TN0000544 · 1,078 served
Henning Water Dept
TN0000295 · 1,073 served
Gateway Utility Company, Inc.
TN0008271 · 1,070 served
Dowelltown-liberty W.s.
TN0000403 · 1,065 served
Cumberland City Water Dept
TN0000162 · 1,023 served
Grand Junction Water Dept
TN0000267 · 1,019 served
Middleton Water Dept
TN0000455 · 964 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