Public water system · LA1073056
ActiveWest Monroe Water System
At a glance
West Monroe Water System (PWSID LA1073056) is an active community water system in Ouachita Parish County, Louisiana. It reports serving 16,005 people through 5,335 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
16,005
Service connections
5,335
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does West Monroe Water System compare with other water systems in Ouachita Parish County?
By EPA's size categories, West Monroe Water System is a large system (10,001 to 100,000 people). Ouachita Parish County has 28 active public water systems, and West Monroe Water System is the 2nd-largest of them by population served. Its population served is about 146% above the county average of 6,514 people per system, and accounts for 8.8% of the 182,392 people reported by systems filed under the county. Across Louisiana, the 1,121 active systems average 4,685 people each. Nationally, the average active community water system reports serving 6,703 people, so West Monroe Water System is about 139% above that figure.
What does “community water system” mean?
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. Louisiana has 815 active community water systems, 73% of the state's 1,121 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 966 Louisiana systems (86%) list groundwater as their primary source.
Who owns and regulates West Monroe Water System?
EPA lists West Monroe Water System as owned by a local government. The LA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 3 of the 28 active systems in Ouachita Parish County (11%) are also owned by a local government.
Does West Monroe Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023. The violations listed here began between January 2017 and April 2023. By type: 7 required treatment not met, 4 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Groundwater Rule (7 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-02-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-02-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-02-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-02-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-04-15 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2020-02-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-02-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-02-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
West Monroe Water System: frequently asked questions
Who runs West Monroe Water System?
West Monroe Water System (PWSID LA1073056) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does West Monroe Water System serve?
West Monroe Water System reports serving 16,005 people through 5,335 service connections in Ouachita Parish County, Louisiana.
Where does West Monroe Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does West Monroe Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is West Monroe Water System's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find West Monroe Water System's water quality report?
As a community water system, West Monroe Water System must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Ouachita Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Monroe Water System | Ouachita Parish | 57,000 | Community | Surface water |
| West Hwy 80 Ark Road Ws | Ouachita Parish | 14,649 | Community | Groundwater |
| Gowc North Water System | Ouachita Parish | 13,287 | Community | Groundwater |
| Gowc East Water System | Ouachita Parish | 11,742 | Community | Groundwater |
| Cheniere Drew North Water System | Ouachita Parish | 11,280 | Community | Groundwater |
| Southwest Ouachita Waterworks, Inc. | Ouachita Parish | 10,725 | Community | Groundwater |
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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, “West Monroe Water System, PWSID LA1073056, Louisiana”, https://aquacensus.com/water-systems/louisiana/west-monroe-water-system-la1073056 (data as of October 1, 2026).