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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

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Active public water systems in East Baton Rouge Parish County, Louisiana
#Water systemCountyPopulation servedTypeSource
1Baton Rouge Water CompanyEast Baton Rouge Parish596,844CommunityGroundwater
2Zachary Water SystemEast Baton Rouge Parish31,569CommunityGroundwater
3City of Baker Water SystemEast Baton Rouge Parish13,855CommunityGroundwater
4Exxonmobil Baton Rouge RefineryEast Baton Rouge Parish2,500Non-transient non-communityGroundwater
5Exxonmobil Baton Rouge Chemical PlantEast Baton Rouge Parish1,500Non-transient non-communityGroundwater
6Made To Go TruckstopEast Baton Rouge Parish500Transient non-communityGroundwater
7Georgia-Pacific CorporationEast Baton Rouge Parish484Non-transient non-communityGroundwater
8Exxonmobil Product Solutions-PlasticsEast Baton Rouge Parish450Non-transient non-communityGroundwater
9Exxonmobil Baton Rouge PolymerEast Baton Rouge Parish440Non-transient non-communityGroundwater
10Formosa Plastics CorporationEast Baton Rouge Parish350Non-transient non-communityGroundwater
11Eco-Services Operations Br PlantEast Baton Rouge Parish300Non-transient non-communityGroundwater
12J E S T CEast Baton Rouge Parish300CommunityGroundwater
13Exxonmobil Product Solutions-ResinsEast Baton Rouge Parish125Non-transient non-communityGroundwater
14TrecoraEast Baton Rouge Parish100Non-transient non-communityGroundwater
15Uop, LLCEast Baton Rouge Parish94Non-transient non-communityGroundwater
16Oxbow Calcining, LLCEast Baton Rouge Parish67Non-transient non-communityGroundwater
17Exxon Mobile Baton Rouge Chemicals NorthEast Baton Rouge Parish50Non-transient non-communityGroundwater
18Brec FrenchtownEast Baton Rouge Parish25Transient non-communityGroundwater

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

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).