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Iberville Parish County, Louisiana — public water systems

At a glance

13 active public water systems are filed under Iberville Parish County, Louisiana in EPA's SDWIS records, together reporting 44,927 people served. The largest is City of Plaquemine Water System, which reports serving 14,043 people. 12 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

13

Population served

44.9K

Community systems

12

Groundwater share

84.6%

How does Iberville Parish County compare with other Louisiana counties?

Iberville Parish County has the 29th-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 44,927 people served in total, the 29th-largest county figure in the state and 0.9% of the statewide total. The average system here reports serving 3,456 people, about 26% 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 Iberville Parish County's drinking water come from?

By primary water source, Iberville Parish County's active systems draw on groundwater (6, 46%), purchased groundwater (5, 38%) and surface water (2, 15%). Overall, 85% rely mainly on groundwater (including purchased groundwater) and 15% 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 Plaquemine Water System, draws primarily on groundwater.

What kinds of water systems operate in Iberville Parish County?

Iberville Parish County's active systems break down as 12 community systems (92%) and 1 non-transient non-community systems (7.7%). 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. EPA lists their owner types as local government (77%), private (15%) and federal government (7.7%).

Water systems in Iberville Parish County

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Active public water systems in Iberville Parish County, Louisiana
#Water systemCountyPopulation servedTypeSource
1City of Plaquemine Water SystemIberville Parish14,043CommunityGroundwater
2East Iberville Water SystemIberville Parish6,657CommunityPurchased groundwater
3Intracoastal Water System WestIberville Parish6,489CommunitySurface water
4Dow USA, La DivisionIberville Parish3,960Non-transient non-communitySurface water
5Town of MaringouinIberville Parish3,300CommunityGroundwater
6Intracoastal Water System EastIberville Parish2,940CommunityGroundwater
7Town of White Castle Water SystemIberville Parish2,550CommunityGroundwater
8North Iberville Water SystemIberville Parish1,524CommunityGroundwater
9Highway 1148 Water SystemIberville Parish1,086CommunityPurchased groundwater
10Village of Grosse Tete Water SystemIberville Parish954CommunityPurchased groundwater
11Village of Rosedale Water SystemIberville Parish664CommunityGroundwater
12Gillis Long CenterIberville Parish600CommunityPurchased groundwater
13Magnolia - Plantation GardensIberville Parish160CommunityPurchased groundwater

Iberville Parish County water systems: frequently asked questions

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

EPA's SDWIS records file 13 active public water systems under Iberville Parish County, Louisiana: 12 community systems (92%) and 1 non-transient non-community systems (7.7%).

Who supplies drinking water in Iberville Parish County, LA?

The largest community water systems filed under Iberville Parish County are City of Plaquemine Water System (14,043 people served), East Iberville Water System (6,657 people served) and Intracoastal Water System West (6,489 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 Iberville Parish County's drinking water come from groundwater or surface water?

Of the 13 active public water systems in Iberville Parish County, 85% draw mainly on groundwater and 15% on surface water, counting purchased supplies. The largest system, City of Plaquemine Water System, uses groundwater.

Where can I find a water quality report for Iberville 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. 12 community systems are filed under Iberville 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 Iberville 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 Iberville Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/iberville-parish (data as of October 1, 2026).