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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
101–125 of 403Blountville Utility District
TN0000058 · 15,647 served
Laguardo Utility District
TN0000394 · 15,595 served
Watts Bar Utility District
TN0000872 · 15,571 served
Madisonville Water Dept
TN0000425 · 15,087 served
Oakland Water Dept
TN0000521 · 14,957 served
Pigeon Forge Water Department
TN0000548 · 14,872 served
Tellico Area Services System
TN0000726 · 14,836 served
Tuckaleechee Utility District
TN0000714 · 14,522 served
Chuckey Utility District
TN0000108 · 14,369 served
Covington Water Dept
TN0000144 · 14,334 served
Castalian Springs-bethpage U.d.
TN0000097 · 14,184 served
Fayetteville Public Utilities
TN0000242 · 13,908 served
Tellico Village P.o.a.
TN0000871 · 13,870 served
Rogersville Water Dept
TN0000593 · 13,729 served
Sweetwater Utility Board
TN0000687 · 13,597 served
Bloomingdale Utility District
TN0000056 · 13,318 served
Marshall Co B.p.u. #1
TN0000105 · 13,257 served
Bon Aqua-lyles U.d.
TN0000066 · 12,952 served
Paris Bd of Public Utilities
TN0000536 · 12,874 served
Etowah Utilities
TN0000233 · 12,851 served
Brownsville Water Department
TN0000080 · 12,845 served
Huntsville Utility District
TN0000318 · 12,516 served
Hohenwald Water System
TN0000304 · 12,475 served
Erwin Utilities Authority
TN0000231 · 12,236 served
South Cumberland U.d.
TN0000159 · 12,233 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