Ouachita Parish County, Louisiana — public water systems
At a glance
28 active public water systems are filed under Ouachita Parish County, Louisiana in EPA's SDWIS records, together reporting 182,392 people served. The largest is City of Monroe Water System, which reports serving 57,000 people. 23 are community water systems serving people where they live; the other 5 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
28
Population served
182.4K
Community systems
23
Groundwater share
96.4%
How does Ouachita Parish County compare with other Louisiana counties?
Ouachita Parish County has the 7th-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 182,392 people served in total, the 8th-largest county figure in the state and 3.5% of the statewide total. The average system here reports serving 6,514 people, about 39% above 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 Ouachita Parish County's drinking water come from?
By primary water source, Ouachita Parish County's active systems draw on groundwater (22, 79%), purchased groundwater (5, 18%) and surface water (1, 3.6%). Overall, 96% rely mainly on groundwater (including purchased groundwater) and 3.6% 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 Monroe Water System, draws primarily on surface water.
What kinds of water systems operate in Ouachita Parish County?
Ouachita Parish County's active systems break down as 23 community systems (82%), 4 non-transient non-community systems (14%) and 1 transient non-community systems (3.6%). 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 (89%) and local government (11%).
Water systems in Ouachita Parish County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | City of Monroe Water System | Ouachita Parish | 57,000 | Community | Surface water |
| 2 | West Monroe Water System | Ouachita Parish | 16,005 | Community | Groundwater |
| 3 | West Hwy 80 Ark Road Ws | Ouachita Parish | 14,649 | Community | Groundwater |
| 4 | Gowc North Water System | Ouachita Parish | 13,287 | Community | Groundwater |
| 5 | Gowc East Water System | Ouachita Parish | 11,742 | Community | Groundwater |
| 6 | Cheniere Drew North Water System | Ouachita Parish | 11,280 | Community | Groundwater |
| 7 | Southwest Ouachita Waterworks, Inc. | Ouachita Parish | 10,725 | Community | Groundwater |
| 8 | Brownville Water System | Ouachita Parish | 9,696 | Community | Groundwater |
| 9 | Kiroli Darbonne Ws | Ouachita Parish | 9,210 | Community | Groundwater |
| 10 | South Monroe Ws Gowc | Ouachita Parish | 7,335 | Community | Groundwater |
| 11 | Cadeville Water District | Ouachita Parish | 6,219 | Community | Groundwater |
| 12 | Prairie Road Water District | Ouachita Parish | 2,598 | Community | Groundwater |
| 13 | Better Waterworks Water System | Ouachita Parish | 2,160 | Community | Groundwater |
| 14 | Indian Village Water System | Ouachita Parish | 2,082 | Community | Groundwater |
| 15 | Cheniere Drew South Water System | Ouachita Parish | 1,563 | Community | Groundwater |
| 16 | Frost Town Water System | Ouachita Parish | 1,551 | Community | Groundwater |
| 17 | L&R North Water System | Ouachita Parish | 1,293 | Community | Groundwater |
| 18 | Graphic Packaging International Inc. - A | Ouachita Parish | 850 | Non-transient non-community | Groundwater |
| 19 | Graphic Packaging International Inc. - B | Ouachita Parish | 850 | Non-transient non-community | Groundwater |
| 20 | Lincoln Hills Subdivision Ws | Ouachita Parish | 552 | Community | Purchased groundwater |
| 21 | West Ouachita Ind Park | Ouachita Parish | 500 | Non-transient non-community | Groundwater |
| 22 | Hidden Oaks Subdivision Ws | Ouachita Parish | 438 | Community | Purchased groundwater |
| 23 | Mcclendon Community Water Well | Ouachita Parish | 336 | Community | Groundwater |
| 24 | International Paper - West Monroe | Ouachita Parish | 200 | Non-transient non-community | Groundwater |
| 25 | Bayou Boeuf Rv Park Water System | Ouachita Parish | 100 | Transient non-community | Groundwater |
| 26 | Ramsey Water System | Ouachita Parish | 84 | Community | Purchased groundwater |
| 27 | Pecan Lake Subdivision Ws | Ouachita Parish | 57 | Community | Purchased groundwater |
| 28 | Wildwood MHP Ws | Ouachita Parish | 30 | Community | Purchased groundwater |
Ouachita Parish County water systems: frequently asked questions
How many public water systems are in Ouachita Parish County, Louisiana?
EPA's SDWIS records file 28 active public water systems under Ouachita Parish County, Louisiana: 23 community systems (82%), 4 non-transient non-community systems (14%) and 1 transient non-community systems (3.6%).
Who supplies drinking water in Ouachita Parish County, LA?
The largest community water systems filed under Ouachita Parish County are City of Monroe Water System (57,000 people served), West Monroe Water System (16,005 people served) and West Hwy 80 Ark Road Ws (14,649 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 Ouachita Parish County's drinking water come from groundwater or surface water?
Of the 28 active public water systems in Ouachita Parish County, 96% draw mainly on groundwater and 3.6% on surface water, counting purchased supplies. The largest system, City of Monroe Water System, uses surface water.
Where can I find a water quality report for Ouachita 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. 23 community systems are filed under Ouachita 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 Ouachita 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.
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- 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 Ouachita Parish County, Louisiana”, https://aquacensus.com/water-systems/louisiana/ouachita-parish (data as of October 1, 2026).