Decatur County, Tennessee — public water systems
At a glance
8 active public water systems are filed under Decatur County, Tennessee in EPA's SDWIS records, together reporting 14,453 people served. The largest is Parsons Water Department, which reports serving 4,303 people. 5 are community water systems serving people where they live; the other 3 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
8
Population served
14.5K
Community systems
5
Groundwater share
50%
How does Decatur County compare with other Tennessee counties?
Decatur County has the 53rd-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 14,453 people served in total, the 73rd-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 1,807 people, well 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 Decatur County's drinking water come from?
By primary water source, Decatur County's active systems draw on groundwater (4, 50%), purchased surface water (2, 25%) and surface water (2, 25%). Overall, 50% rely mainly on groundwater (including purchased groundwater) and 50% 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, Parsons Water Department, draws primarily on surface water.
What kinds of water systems operate in Decatur County?
Decatur County's active systems break down as 5 community systems (63%) and 3 transient non-community systems (38%). 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 local government (50%) and private (50%).
Water systems in Decatur County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Parsons Water Department | Decatur | 4,303 | Community | Surface water |
| 2 | North U.Dep. of Decatur/Benton Co | Decatur | 3,818 | Community | Surface water |
| 3 | Perryville Utility District | Decatur | 3,127 | Community | Purchased surface water |
| 4 | Decaturville Water System | Decatur | 2,384 | Community | Purchased surface water |
| 5 | Woodlawn Shores Water Dept | Decatur | 450 | Community | Groundwater |
| 6 | Ponderosa Trailer Area | Decatur | 178 | Transient non-community | Groundwater |
| 7 | Ponderosa House Ws | Decatur | 168 | Transient non-community | Groundwater |
| 8 | Ponderosa Club House | Decatur | 25 | Transient non-community | Groundwater |
Decatur County water systems: frequently asked questions
How many public water systems are in Decatur County, Tennessee?
EPA's SDWIS records file 8 active public water systems under Decatur County, Tennessee: 5 community systems (63%) and 3 transient non-community systems (38%).
Who supplies drinking water in Decatur County, TN?
The largest community water systems filed under Decatur County are Parsons Water Department (4,303 people served), North U.Dep. of Decatur/Benton Co (3,818 people served) and Perryville Utility District (3,127 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 Decatur County's drinking water come from groundwater or surface water?
Of the 8 active public water systems in Decatur County, 50% draw mainly on groundwater and 50% on surface water, counting purchased supplies. The largest system, Parsons Water Department, uses surface water.
Where can I find a water quality report for Decatur 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. 5 community systems are filed under Decatur 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 Decatur 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 Decatur County, Tennessee”, https://aquacensus.com/water-systems/tennessee/decatur (data as of October 1, 2026).