Jefferson Davis Parish County, Louisiana — public water systems
At a glance
8 active public water systems are filed under Jefferson Davis Parish County, Louisiana in EPA's SDWIS records, together reporting 38,275 people served. The largest is City of Jennings Water System, which reports serving 9,837 people. All 8 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
8
Population served
38.3K
Community systems
8
Groundwater share
100%
How does Jefferson Davis Parish County compare with other Louisiana counties?
Jefferson Davis Parish County has the 47th-most active public water systems among the 79 counties listed for active Louisiana systems in EPA records; among the 59 with 3 or more systems, the median has 13. Its systems report 38,275 people served in total, the 33rd-largest county figure in the state and 0.7% of the statewide total. The average system here reports serving 4,784 people, roughly in line with the Louisiana average of 4,685. 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 Jefferson Davis Parish County's drinking water come from?
By primary water source, Jefferson Davis Parish County's active systems draw on groundwater (7, 88%) and purchased groundwater (1, 13%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.7% across Louisiana. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Jennings Water System, draws primarily on groundwater.
What kinds of water systems operate in Jefferson Davis Parish County?
Jefferson Davis Parish County's active systems break down as 8 community systems (100%). 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. EPA lists their owner types as local government (100%).
Water systems in Jefferson Davis Parish County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | City of Jennings Water System | Jefferson Davis Parish | 9,837 | Community | Groundwater |
| 2 | Jeff Davis Water and Sewer Commission 1 | Jefferson Davis Parish | 9,780 | Community | Groundwater |
| 3 | Jeff Davis Central Waterworks District | Jefferson Davis Parish | 5,709 | Community | Groundwater |
| 4 | Town of Welsh Water System | Jefferson Davis Parish | 4,311 | Community | Groundwater |
| 5 | Jeff Davis Water District 4 | Jefferson Davis Parish | 4,194 | Community | Groundwater |
| 6 | Town of Lake Arthur Water System | Jefferson Davis Parish | 2,706 | Community | Groundwater |
| 7 | Town of Elton Water System | Jefferson Davis Parish | 1,512 | Community | Purchased groundwater |
| 8 | Village of Fenton Water System | Jefferson Davis Parish | 226 | Community | Groundwater |
Jefferson Davis Parish County water systems: frequently asked questions
How many public water systems are in Jefferson Davis Parish County, Louisiana?
EPA's SDWIS records file 8 active public water systems under Jefferson Davis Parish County, Louisiana: 8 community systems (100%).
Who supplies drinking water in Jefferson Davis Parish County, LA?
The largest community water systems filed under Jefferson Davis Parish County are City of Jennings Water System (9,837 people served), Jeff Davis Water and Sewer Commission 1 (9,780 people served) and Jeff Davis Central Waterworks District (5,709 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 Jefferson Davis Parish County's drinking water come from groundwater or surface water?
Of the 8 active public water systems in Jefferson Davis Parish County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Jennings Water System, uses groundwater.
Where can I find a water quality report for Jefferson Davis Parish 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. 8 community systems are filed under Jefferson Davis Parish 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 Jefferson Davis Parish 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 Louisiana water systems
- All Louisiana public water systems· 1,121 active
- Orleans Parish County· 10 systems
- Beauregard Parish County· 8 systems
- Cameron Parish County· 8 systems
- Concordia Parish County· 8 systems
- Catahoula Parish County· 7 systems
- Franklin Parish County· 7 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 Jefferson Davis Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/jefferson-davis-parish (data as of October 1, 2026).