Tap Water Quality Report
Tap water quality in LAKE CHARLES, Louisiana
Tap water in LAKE CHARLES, Louisiana receives a grade of B (80/100) from TapWaterSafety.org. It's served by CITY OF LAKE CHARLES WATER SYSTEM. The most significant water quality concerns are: Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Dibromoacetic acid significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LAKE CHARLES's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LAKE CHARLES.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 18.1 ppb, 120x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 6.97 ppb, 116x above the EWG health guideline of 0.06 ppb.
Dibromoacetic acid significantly above health guideline
Moderate concernDibromoacetic acid detected at 2.52 ppb, 84x above the EWG health guideline of 0.03 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF LAKE CHARLES WATER SYSTEM (system ID LA1019029) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for LAKE CHARLES
Filters matched to the specific contaminants in LAKE CHARLES's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts like TTHM. Look for NSF/ANSI 53 VOC or chloroform reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LAKE CHARLES's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Total trihalomethanes (TTHMs) Disinfection byproduct |
18.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 120× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
6.97 ppb | 0.06 | — | — | — | — | — | 116× over |
| Dibromoacetic acid Disinfection byproduct |
2.52 ppb | 0.03 | — | — | — | — | — | 84× over |
| Dibromochloromethane Disinfection byproduct |
7.52 ppb | 0.1 | — | — | — | — | — | 75× over |
| Bromodichloromethane Disinfection byproduct |
3.83 ppb | 0.06 | — | — | — | — | — | 64× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
3.86 ppb | 0.1 | 60.0 | 60 | — | — | — | 39× over |
| Bromoform Disinfection byproduct |
5.09 ppb | 0.5 | — | — | — | — | — | 10× over |
| Radium, combined (-226 and -228) Radiological |
0.51 pCi/L | 0.05 | 5.0 | — | — | — | — | 10× over |
| Trichloroacetic acid Disinfection byproduct |
0.533 ppb | 0.1 | — | — | — | — | — | 5.3× over |
| Chloroform Disinfection byproduct |
1.63 ppb | 0.4 | — | — | — | — | — | 4.1× over |
| Dichloroacetic acid Disinfection byproduct |
0.751 ppb | 0.2 | — | — | — | — | — | 3.8× over |
| Manganese Heavy metal |
293.9 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Chromium (hexavalent) Heavy metal |
0.0133 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
301.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Nitrate and nitrite Inorganic |
0.0105 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Aluminum Heavy metal |
41.2 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Antimony Heavy metal |
0.062 ppb | 1.0 | 6.0 | 10 | 20 | 1 | — | Below guideline |
| Molybdenum Other |
0.91 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
1.88 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Dichloromethane (methylene chloride) Volatile organic compound |
0.0141 ppb | 4.0 | 5.0 | — | — | — | — | Below guideline |
| Endrin Other |
0.000918 ppb | 0.3 | 2.0 | — | — | — | — | Below guideline |
| Pentachlorophenol Other |
0.000776 ppb | 0.3 | 1.0 | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0479 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.298 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Cyanide Inorganic |
1.22 ppb | — | 200.0 | 50 | 70 | 150 | — | Below guideline |
| Dalapon Pesticide/Herbicide |
0.0169 ppb | — | 200.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.0939 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Silver Other |
0.6 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from CITY OF LAKE CHARLES WATER SYSTEM.