CALCASIEU PARISH WW DISTRICT NO 4
PWSID: LA1019053 · Westlake, LA · Serves 5,340 people
According to EPA Safe Drinking Water Information System (SDWIS), CALCASIEU PARISH WW DISTRICT NO 4 (PWSID LA1019053) in Westlake, LA is listed as a CWS water system covering about 5,340 people. The same extract lists 8 health-based violation records spanning 2023-2025. Those 8 health-based rows for CALCASIEU PARISH WW DISTRICT NO 4 cover contaminants such as Groundwater Rule, LEAD AND COPPER RULE REVISIONS; they remain historical EPA registry entries, not a current compliance or drinkability score.
CALCASIEU PARISH WW DISTRICT NO 4 has 8 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Groundwater Rule, LEAD AND COPPER RULE REVISIONS. Recorded violations span 2023–2025. Day-to-day primacy enforcement for this system runs through the Louisiana drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Louisiana state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- LA1019053
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Westlake, LA
- Population Served
- 5,340
- Health Violations
- Yes (8)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Groundwater Rule | 7 | 7 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
Violation History (8)
| Contaminant | Health | Date |
|---|---|---|
| Groundwater Rule | Yes | Oct 28, 2025 |
| Groundwater Rule | Yes | Oct 28, 2025 |
| Groundwater Rule | Yes | Oct 28, 2025 |
| Groundwater Rule | Yes | Oct 28, 2025 |
| Groundwater Rule | Yes | Oct 28, 2025 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Groundwater Rule | Yes | Jul 3, 2023 |
| Groundwater Rule | Yes | Jul 3, 2023 |
Frequently Asked Questions
What does EPA SDWIS list for CALCASIEU PARISH WW DISTRICT NO 4?
How many people does CALCASIEU PARISH WW DISTRICT NO 4 serve?
What violations does CALCASIEU PARISH WW DISTRICT NO 4 have?
What contaminants have been found in CALCASIEU PARISH WW DISTRICT NO 4 water?
Compare beyond Louisiana
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest CALCASIEU PARISH WW DISTRICT NO 4 on cumulative violation count (8) and EPA-reported population served (5,340). Violation-count peers include Mashantucket Pequot Water System, San Ildefonso Pueblo, TOWAOC WATER SYSTEM. Population peers include EATON RAPIDS, CITY OF, PINTLALA WATER SYSTEM, INC., IOLA, CITY OF.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
Explore More
About This Data
CALCASIEU PARISH WW DISTRICT NO 4 (LA1019053) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF LAKE CHARLES WATER SYSTEM; SULPHUR CITY OF WATER SYSTEM; WESTLAKE CITY OF WATER SYSTEM; CALCASIEU PARISH WW DISTRICT 7. Health-based rows (8 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.