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Orleans Parish County, Louisiana — public water systems

At a glance

10 active public water systems are filed under Orleans Parish County, Louisiana in EPA's SDWIS records, together reporting 389,093 people served. The largest is New Orleans Carrollton Water Works, which reports serving 334,903 people. 2 are community water systems serving people where they live; the other 8 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

10

Population served

389.1K

Community systems

2

Groundwater share

10%

How does Orleans Parish County compare with other Louisiana counties?

Orleans Parish County has the 43rd-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 389,093 people served in total, the 3rd-largest county figure in the state and 7.4% of the statewide total. The average system here reports serving 38,909 people, about 8.3 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 Orleans Parish County's drinking water come from?

By primary water source, Orleans Parish County's active systems draw on purchased surface water (7, 70%), surface water (2, 20%) and groundwater (1, 10%). Overall, 10% rely mainly on groundwater (including purchased groundwater) and 90% on surface water, compared with 92% and 7.7% across Louisiana. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. The county's largest system, New Orleans Carrollton Water Works, draws primarily on surface water.

What kinds of water systems operate in Orleans Parish County?

Orleans Parish County's active systems break down as 2 community systems (20%), 7 non-transient non-community systems (70%) and 1 transient non-community systems (10%). 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 local government (90%) and private (10%).

Water systems in Orleans Parish County

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Active public water systems in Orleans Parish County, Louisiana
#Water systemCountyPopulation servedTypeSource
1New Orleans Carrollton Water WorksOrleans Parish334,903CommunitySurface water
2New Orleans Algiers Water WorksOrleans Parish52,785CommunitySurface water
3Irish Bayou Travel CenterOrleans Parish450Transient non-communityGroundwater
4Pno Alabo Street WharfOrleans Parish300Non-transient non-communityPurchased surface water
5Pno Cruise TerminalsOrleans Parish200Non-transient non-communityPurchased surface water
6Pno Uptown FacilitiesOrleans Parish179Non-transient non-communityPurchased surface water
7Pno 3401 Jourdan RoadOrleans Parish175Non-transient non-communityPurchased surface water
8Pno Louisiana Next Cotton WarehouseOrleans Parish46Non-transient non-communityPurchased surface water
9Pno Elaine Street WharfOrleans Parish29Non-transient non-communityPurchased surface water
10Pno Harmony St. WharfOrleans Parish26Non-transient non-communityPurchased surface water

Orleans Parish County water systems: frequently asked questions

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

EPA's SDWIS records file 10 active public water systems under Orleans Parish County, Louisiana: 2 community systems (20%), 7 non-transient non-community systems (70%) and 1 transient non-community systems (10%).

Who supplies drinking water in Orleans Parish County, LA?

The largest community water systems filed under Orleans Parish County are New Orleans Carrollton Water Works (334,903 people served) and New Orleans Algiers Water Works (52,785 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 Orleans Parish County's drinking water come from groundwater or surface water?

Of the 10 active public water systems in Orleans Parish County, 10% draw mainly on groundwater and 90% on surface water, counting purchased supplies. The largest system, New Orleans Carrollton Water Works, uses surface water.

Where can I find a water quality report for Orleans 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. 2 community systems are filed under Orleans 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 Orleans 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 Orleans Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/orleans-parish (data as of October 1, 2026).