Public water system · LA1045002
ActiveIberia Water Works District 3 - Coteau
At a glance
Iberia Water Works District 3 - Coteau (PWSID LA1045002) is an active community water system in Iberia Parish County, Louisiana. It reports serving 8,775 people through 2,925 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, 8 are health-based, and the most recent began in May 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,775
Service connections
2,925
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Iberia Water Works District 3 - Coteau compare with other water systems in Iberia Parish County?
By EPA's size categories, Iberia Water Works District 3 - Coteau is a medium system (3,301 to 10,000 people). Iberia Parish County has 13 active public water systems, and Iberia Water Works District 3 - Coteau is the 2nd-largest of them by population served. Its population served is about 50% above the county average of 5,837 people per system, and accounts for 12% of the 75,877 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 Iberia Water Works District 3 - Coteau is about 31% 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 Iberia Water Works District 3 - Coteau?
EPA lists Iberia Water Works District 3 - Coteau 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 13 active systems in Iberia Parish County (23%) are also owned by a local government.
Does Iberia Water Works District 3 - Coteau have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in May 2022. The violations listed here began between June 2009 and May 2022. By type: 6 required treatment not met, 3 monitoring and reporting, 2 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Groundwater Rule (6 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 |
|---|---|---|---|---|
| 2022-05-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-05-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-05-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-05-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-12-13 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-10-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2015-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2011-12-20 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | 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.
Iberia Water Works District 3 - Coteau: frequently asked questions
Who runs Iberia Water Works District 3 - Coteau?
Iberia Water Works District 3 - Coteau (PWSID LA1045002) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Iberia Water Works District 3 - Coteau serve?
Iberia Water Works District 3 - Coteau reports serving 8,775 people through 2,925 service connections in Iberia Parish County, Louisiana.
Where does Iberia Water Works District 3 - Coteau 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 Iberia Water Works District 3 - Coteau have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in May 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 Iberia Water Works District 3 - Coteau'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, 8 are health-based, and the most recent began in May 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 Iberia Water Works District 3 - Coteau's water quality report?
As a community water system, Iberia Water Works District 3 - Coteau 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 Iberia Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lawco - New Iberia Water System | Iberia Parish | 59,928 | Community | Groundwater |
| City of Jeanerette Water System | Iberia Parish | 6,189 | Community | Groundwater |
| Chases Rv Park Water System | Iberia Parish | 261 | Transient non-community | Groundwater |
| Morton Salt Inc. Water System | Iberia Parish | 250 | Non-transient non-community | Groundwater |
| Ma Patout & Son Sugar Mill Water System | Iberia Parish | 170 | Non-transient non-community | Groundwater |
| Lake Fausse Pointe Park Water System | Iberia Parish | 106 | Transient non-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, “Iberia Water Works District 3 - Coteau, PWSID LA1045002, Louisiana”, https://aquacensus.com/water-systems/louisiana/iberia-water-works-district-3-coteau-la1045002 (data as of October 1, 2026).