Union County, Tennessee — public water systems
At a glance
10 active public water systems are filed under Union County, Tennessee in EPA's SDWIS records, together reporting 19,856 people served. The largest is Luttrell-Blaine-Corryton U.D., which reports serving 10,529 people. 4 are community water systems serving people where they live; the other 6 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
10
Population served
19.9K
Community systems
4
Groundwater share
70%
How does Union County compare with other Tennessee counties?
Union County has the 34th-most active public water systems among the 323 counties listed for active Tennessee systems in EPA records; among the 152 with 3 or more systems, the median has 6. Its systems report 19,856 people served in total, the 66th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 1,986 people, about 66% below the Tennessee average of 5,780. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Union County's drinking water come from?
By primary water source, Union County's active systems draw on groundwater (7, 70%), purchased surface water (2, 20%) and surface water (1, 10%). Overall, 70% rely mainly on groundwater (including purchased groundwater) and 30% on surface water, compared with 80% and 20% across Tennessee. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Luttrell-Blaine-Corryton U.D., draws primarily on surface water.
What kinds of water systems operate in Union County?
Union County's active systems break down as 4 community systems (40%) and 6 transient non-community systems (60%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (80%) and local government (20%).
Water systems in Union County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Luttrell-Blaine-Corryton U.D. | Union | 10,529 | Community | Surface water |
| 2 | Maynardville Water Dept | Union | 7,940 | Community | Purchased surface water |
| 3 | Beach Island Marina | Union | 500 | Transient non-community | Groundwater |
| 4 | Old Hickory Wat Co-Union County | Union | 342 | Community | Purchased surface water |
| 5 | Loyston Point P.U.A.,Tva | Union | 150 | Transient non-community | Groundwater |
| 6 | Leadmine Bend Water Assoc. | Union | 120 | Community | Groundwater |
| 7 | Union County Boat Dock | Union | 100 | Transient non-community | Groundwater |
| 8 | Tanasi Gs Camp, Gs Council S Appalachia | Union | 100 | Transient non-community | Groundwater |
| 9 | Blue Springs Dock | Union | 50 | Transient non-community | Groundwater |
| 10 | Dollar General 19751 Hartleton | Union | 25 | Transient non-community | Groundwater |
Union County water systems: frequently asked questions
How many public water systems are in Union County, Tennessee?
EPA's SDWIS records file 10 active public water systems under Union County, Tennessee: 4 community systems (40%) and 6 transient non-community systems (60%).
Who supplies drinking water in Union County, TN?
The largest community water systems filed under Union County are Luttrell-Blaine-Corryton U.D. (10,529 people served), Maynardville Water Dept (7,940 people served) and Old Hickory Wat Co-Union County (342 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Union County's drinking water come from groundwater or surface water?
Of the 10 active public water systems in Union County, 70% draw mainly on groundwater and 30% on surface water, counting purchased supplies. The largest system, Luttrell-Blaine-Corryton U.D., uses surface water.
Where can I find a water quality report for Union County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 4 community systems are filed under Union County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Union County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Tennessee water systems
- All Tennessee public water systems· 1,383 active
- Jackson County· 10 systems
- Geauga County· 10 systems
- Knox County· 10 systems
- Shelby County· 10 systems
- Grainger County· 10 systems
- Hickman County· 10 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Public water systems in Union County, Tennessee”, https://aquacensus.com/water-systems/tennessee/union (data as of October 1, 2026).