Public water system · LA1099009
ActiveUnited Water System
At a glance
United Water System (PWSID LA1099009) is an active community water system in St. Martin Parish County, Louisiana. It reports serving 4,446 people through 1,494 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in October 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,446
Service connections
1,494
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does United Water System compare with other water systems in St. Martin Parish County?
By EPA's size categories, United Water System is a medium system (3,301 to 10,000 people). St. Martin Parish County has 24 active public water systems. Its population served is about 35% above the county average of 3,304 people per system, and accounts for 5.6% of the 79,285 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 United Water System is about 34% 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 United Water System?
EPA lists United Water System as privately owned. 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. 15 of the 24 active systems in St. Martin Parish County (63%) are also privately owned.
Does United 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 October 2022. The violations listed here began between October 2018 and October 2022. By type: 8 contaminant level above the legal limit, 3 required treatment not met and 1 monitoring and reporting. The contaminant or rule involved most often is Arsenic (8 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 |
|---|---|---|---|---|
| 2022-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2022-05-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-05-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-05-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2021-02-19 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2020-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2018-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | 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.
United Water System: frequently asked questions
Who runs United Water System?
United Water System (PWSID LA1099009) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does United Water System serve?
United Water System reports serving 4,446 people through 1,494 service connections in St. Martin Parish County, Louisiana.
Where does United 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 United 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 October 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 United 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 October 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 United Water System's water quality report?
As a community water system, United 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 St. Martin Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Village of Parks Water System | St. Martin Parish | 12,801 | Community | Groundwater |
| Cecilia Water Corporation | St. Martin Parish | 12,420 | Community | Groundwater |
| Bayou Teche Water Works | St. Martin Parish | 10,137 | Community | Groundwater |
| City of Breaux Bridge Water System | St. Martin Parish | 10,098 | Community | Groundwater |
| City of St Martinville Water System | St. Martin Parish | 7,263 | Community | Groundwater |
| Henderson Nina Water System Inc. | St. Martin Parish | 5,535 | 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, “United Water System, PWSID LA1099009, Louisiana”, https://aquacensus.com/water-systems/louisiana/united-water-system-la1099009 (data as of October 1, 2026).