Davidson County, Tennessee — public water systems
At a glance
4 active public water systems are filed under Davidson County, Tennessee in EPA's SDWIS records, together reporting 925,478 people served. The largest is Metro Water Services, which reports serving 778,153 people. 3 are community water systems serving people where they live; the other 1 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
4
Population served
925.5K
Community systems
3
Groundwater share
0%
How does Davidson County compare with other Tennessee counties?
Davidson County has the 120th-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 925,478 people served in total, the largest county figure in the state and 12% of the statewide total. The average system here reports serving 231,370 people, about 40 times 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 Davidson County's drinking water come from?
By primary water source, Davidson County's active systems draw on surface water (4, 100%). Overall, none rely mainly on groundwater (including purchased groundwater) and all on surface water, compared with 80% and 20% across Tennessee. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. The county's largest system, Metro Water Services, draws primarily on surface water.
What kinds of water systems operate in Davidson County?
Davidson County's active systems break down as 3 community systems (75%) and 1 non-transient non-community systems (25%). 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 non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. EPA lists their owner types as local government (75%) and private (25%).
Water systems in Davidson County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Metro Water Services | Davidson | 778,153 | Community | Surface water |
| 2 | Madison Suburban U.D. | Davidson | 81,203 | Community | Surface water |
| 3 | Harpeth Valley U.D. | Davidson | 65,518 | Community | Surface water |
| 4 | Sontara Old Hickory, Inc.. | Davidson | 604 | Non-transient non-community | Surface water |
Davidson County water systems: frequently asked questions
How many public water systems are in Davidson County, Tennessee?
EPA's SDWIS records file 4 active public water systems under Davidson County, Tennessee: 3 community systems (75%) and 1 non-transient non-community systems (25%).
Who supplies drinking water in Davidson County, TN?
The largest community water systems filed under Davidson County are Metro Water Services (778,153 people served), Madison Suburban U.D. (81,203 people served) and Harpeth Valley U.D. (65,518 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 Davidson County's drinking water come from groundwater or surface water?
Of the 4 active public water systems in Davidson County, none draw mainly on groundwater and all on surface water, counting purchased supplies. The largest system, Metro Water Services, uses surface water.
Where can I find a water quality report for Davidson 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. 3 community systems are filed under Davidson 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 Davidson 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
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 Davidson County, Tennessee”, https://aquacensus.com/water-systems/tennessee/davidson (data as of October 1, 2026).