East Baton Rouge Parish County, Louisiana — public water systems
At a glance
18 active public water systems are filed under East Baton Rouge Parish County, Louisiana in EPA's SDWIS records, together reporting 649,553 people served. The largest is Baton Rouge Water Company, which reports serving 596,844 people. 4 are community water systems serving people where they live; the other 14 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
18
Population served
649.6K
Community systems
4
Groundwater share
100%
How does East Baton Rouge Parish County compare with other Louisiana counties?
East Baton Rouge Parish County has the 19th-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 649,553 people served in total, the largest county figure in the state and 12% of the statewide total. The average system here reports serving 36,086 people, about 7.7 times 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 East Baton Rouge Parish County's drinking water come from?
By primary water source, East Baton Rouge Parish County's active systems draw on groundwater (18, 100%). 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, Baton Rouge Water Company, draws primarily on groundwater.
What kinds of water systems operate in East Baton Rouge Parish County?
East Baton Rouge Parish County's active systems break down as 4 community systems (22%), 12 non-transient non-community systems (67%) and 2 transient non-community systems (11%). 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. 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 (78%), local government (17%) and state government (5.6%).
Water systems in East Baton Rouge Parish County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Baton Rouge Water Company | East Baton Rouge Parish | 596,844 | Community | Groundwater |
| 2 | Zachary Water System | East Baton Rouge Parish | 31,569 | Community | Groundwater |
| 3 | City of Baker Water System | East Baton Rouge Parish | 13,855 | Community | Groundwater |
| 4 | Exxonmobil Baton Rouge Refinery | East Baton Rouge Parish | 2,500 | Non-transient non-community | Groundwater |
| 5 | Exxonmobil Baton Rouge Chemical Plant | East Baton Rouge Parish | 1,500 | Non-transient non-community | Groundwater |
| 6 | Made To Go Truckstop | East Baton Rouge Parish | 500 | Transient non-community | Groundwater |
| 7 | Georgia-Pacific Corporation | East Baton Rouge Parish | 484 | Non-transient non-community | Groundwater |
| 8 | Exxonmobil Product Solutions-Plastics | East Baton Rouge Parish | 450 | Non-transient non-community | Groundwater |
| 9 | Exxonmobil Baton Rouge Polymer | East Baton Rouge Parish | 440 | Non-transient non-community | Groundwater |
| 10 | Formosa Plastics Corporation | East Baton Rouge Parish | 350 | Non-transient non-community | Groundwater |
| 11 | Eco-Services Operations Br Plant | East Baton Rouge Parish | 300 | Non-transient non-community | Groundwater |
| 12 | J E S T C | East Baton Rouge Parish | 300 | Community | Groundwater |
| 13 | Exxonmobil Product Solutions-Resins | East Baton Rouge Parish | 125 | Non-transient non-community | Groundwater |
| 14 | Trecora | East Baton Rouge Parish | 100 | Non-transient non-community | Groundwater |
| 15 | Uop, LLC | East Baton Rouge Parish | 94 | Non-transient non-community | Groundwater |
| 16 | Oxbow Calcining, LLC | East Baton Rouge Parish | 67 | Non-transient non-community | Groundwater |
| 17 | Exxon Mobile Baton Rouge Chemicals North | East Baton Rouge Parish | 50 | Non-transient non-community | Groundwater |
| 18 | Brec Frenchtown | East Baton Rouge Parish | 25 | Transient non-community | Groundwater |
East Baton Rouge Parish County water systems: frequently asked questions
How many public water systems are in East Baton Rouge Parish County, Louisiana?
EPA's SDWIS records file 18 active public water systems under East Baton Rouge Parish County, Louisiana: 4 community systems (22%), 12 non-transient non-community systems (67%) and 2 transient non-community systems (11%).
Who supplies drinking water in East Baton Rouge Parish County, LA?
The largest community water systems filed under East Baton Rouge Parish County are Baton Rouge Water Company (596,844 people served), Zachary Water System (31,569 people served) and City of Baker Water System (13,855 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 East Baton Rouge Parish County's drinking water come from groundwater or surface water?
Of the 18 active public water systems in East Baton Rouge Parish County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Baton Rouge Water Company, uses groundwater.
Where can I find a water quality report for East Baton Rouge 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. 4 community systems are filed under East Baton Rouge 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 East Baton Rouge 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
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- Jackson Parish County· 18 systems
- Union Parish County· 18 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 East Baton Rouge Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/east-baton-rouge-parish (data as of October 1, 2026).