Public water system · LA1019054
ActiveWestlake City of Water System
At a glance
Westlake City of Water System (PWSID LA1019054) is an active community water system in Calcasieu Parish County, Louisiana. It reports serving 4,858 people through 2,029 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, 4 are health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,858
Service connections
2,029
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Westlake City of Water System compare with other water systems in Calcasieu Parish County?
By EPA's size categories, Westlake City of Water System is a medium system (3,301 to 10,000 people). Calcasieu Parish County has 72 active public water systems. Its population served is about 64% above the county average of 2,962 people per system, and accounts for 2.3% of the 213,234 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 Westlake City of Water System is about 28% 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 Westlake City of Water System?
EPA lists Westlake City of 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. 19 of the 72 active systems in Calcasieu Parish County (26%) are also owned by a local government.
Does Westlake City of Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024. The violations listed here began between January 2013 and December 2024. By type: 5 monitoring and reporting, 4 required treatment not met and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Groundwater Rule (4 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-12-18 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2023-12-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2023-12-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-12-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-12-05 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2017-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2015-01-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | 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.
Westlake City of Water System: frequently asked questions
Who runs Westlake City of Water System?
Westlake City of Water System (PWSID LA1019054) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Westlake City of Water System serve?
Westlake City of Water System reports serving 4,858 people through 2,029 service connections in Calcasieu Parish County, Louisiana.
Where does Westlake City of 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 Westlake City of Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2024. 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 Westlake City of 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, 4 are health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Westlake City of Water System's water quality report?
As a community water system, Westlake City of 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 Calcasieu Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Lake Charles Water System | Calcasieu Parish | 79,500 | Community | Groundwater |
| Sulphur City of Water System | Calcasieu Parish | 24,489 | Community | Groundwater |
| Calcasieu Parish Ww District No 1 | Calcasieu Parish | 20,837 | Community | Groundwater |
| Calcasieu Parish Ww Dist 9 Carlyss | Calcasieu Parish | 14,502 | Community | Groundwater |
| Houston River Waterworks District 11 | Calcasieu Parish | 6,915 | Community | Groundwater |
| Calcasieu Parish Ww District 8 | Calcasieu Parish | 6,834 | 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, “Westlake City of Water System, PWSID LA1019054, Louisiana”, https://aquacensus.com/water-systems/louisiana/westlake-city-of-water-system-la1019054 (data as of October 1, 2026).