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Concordia Parish County, Louisiana — public water systems

At a glance

8 active public water systems are filed under Concordia Parish County, Louisiana in EPA's SDWIS records, together reporting 25,845 people served. The largest is Concordia Waterworks District 1, which reports serving 6,921 people. 7 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

8

Population served

25.8K

Community systems

7

Groundwater share

100%

How does Concordia Parish County compare with other Louisiana counties?

Concordia Parish County has the 46th-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 25,845 people served in total, the 45th-largest county figure in the state and 0.5% of the statewide total. The average system here reports serving 3,231 people, about 31% below 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 Concordia Parish County's drinking water come from?

By primary water source, Concordia 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, Concordia Waterworks District 1, draws primarily on groundwater.

What kinds of water systems operate in Concordia Parish County?

Concordia Parish County's active systems break down as 7 community systems (88%) and 1 transient non-community systems (13%). 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 (75%) and private (25%).

Water systems in Concordia Parish County

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Active public water systems in Concordia Parish County, Louisiana
#Water systemCountyPopulation servedTypeSource
1Concordia Waterworks District 1Concordia Parish6,921CommunityGroundwater
2Town of Vidalia Water SystemConcordia Parish6,354CommunityGroundwater
3Monterey Rural Water System Inc.Concordia Parish5,250CommunityGroundwater
4Town of Ferriday Water SystemConcordia Parish3,816CommunityGroundwater
5Lake St John Waterworks District 1Concordia Parish2,067CommunityGroundwater
6Village of Clayton Water SystemConcordia Parish723CommunityGroundwater
7Village of Ridgecrest Water SupplyConcordia Parish684CommunityPurchased groundwater
8La Hydroelectric Limited PartnershipConcordia Parish30Transient non-communityGroundwater

Concordia Parish County water systems: frequently asked questions

How many public water systems are in Concordia Parish County, Louisiana?

EPA's SDWIS records file 8 active public water systems under Concordia Parish County, Louisiana: 7 community systems (88%) and 1 transient non-community systems (13%).

Who supplies drinking water in Concordia Parish County, LA?

The largest community water systems filed under Concordia Parish County are Concordia Waterworks District 1 (6,921 people served), Town of Vidalia Water System (6,354 people served) and Monterey Rural Water System Inc. (5,250 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 Concordia Parish County's drinking water come from groundwater or surface water?

Of the 8 active public water systems in Concordia Parish County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Concordia Waterworks District 1, uses groundwater.

Where can I find a water quality report for Concordia 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. 7 community systems are filed under Concordia 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 Concordia 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 Concordia Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/concordia-parish (data as of October 1, 2026).