Public water system · LA1001005
ActiveVillage of Mermentau Water System
At a glance
Village of Mermentau Water System (PWSID LA1001005) is an active community water system in Acadia Parish County, Louisiana. It reports serving 780 people through 260 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, 9 are health-based, and the most recent began in January 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
780
Service connections
260
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Village of Mermentau Water System compare with other water systems in Acadia Parish County?
By EPA's size categories, Village of Mermentau Water System is a small system (501 to 3,300 people). Acadia Parish County has 12 active public water systems. Its population served is well below the county average of 5,277 people per system, and accounts for 1.2% of the 63,321 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 Village of Mermentau Water System is well below 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 Village of Mermentau Water System?
EPA lists Village of Mermentau 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. 6 of the 12 active systems in Acadia Parish County (50%) are also owned by a local government.
Does Village of Mermentau Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in January 2022. The violations listed here began between January 2014 and January 2022. By type: 7 required treatment not met, 2 contaminant level above the legal limit, 2 monitoring and reporting 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 |
|---|---|---|---|---|
| 2022-01-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-01-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-01-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-01-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-01-11 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-07-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-05-22 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-05-22 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2015-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-05-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | 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.
Village of Mermentau Water System: frequently asked questions
Who runs Village of Mermentau Water System?
Village of Mermentau Water System (PWSID LA1001005) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Village of Mermentau Water System serve?
Village of Mermentau Water System reports serving 780 people through 260 service connections in Acadia Parish County, Louisiana.
Where does Village of Mermentau 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 Village of Mermentau Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in January 2022. 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 Village of Mermentau 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, 9 are health-based, and the most recent began in January 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Village of Mermentau Water System's water quality report?
As a community water system, Village of Mermentau 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 Acadia Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lawco - Crowley Water System | Acadia Parish | 17,733 | Community | Groundwater |
| City of Rayne Water System | Acadia Parish | 10,908 | Community | Groundwater |
| Mire Branch Water Corporation | Acadia Parish | 9,480 | Community | Groundwater |
| Egan Water Corporation | Acadia Parish | 5,337 | Community | Groundwater |
| South Rayne Water Corporation | Acadia Parish | 4,254 | Community | Groundwater |
| Town of Church Point Water System | Acadia Parish | 4,176 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Village of Mermentau Water System, PWSID LA1001005, Louisiana”, https://aquacensus.com/water-systems/louisiana/village-of-mermentau-water-system-la1001005 (data as of October 1, 2026).