Water Quality in Lake Charles, LA: No Violations — Grade B
Grade B · Score 78/100 · 5 water systems · Updated 2026-05-03
Lake Charles's water is mostly safe. Minor violations exist but are primarily monitoring-related.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
When EPA compliance data is reviewed for Lake Charles, LA, the result holds consistent: zero violations documented across 5 tracked water systems, with every health-based limit and monitoring requirement met through the full dataset available in SDWIS.
Water Quality Map: Lake Charles, LA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Water Quality by ZIP Code in Lake Charles
Water quality varies across Lake Charles's 11 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 70601 | B | 75 | 0 | 0 | View report → |
| 70605 | B | 75 | 0 | 0 | View report → |
| 70607 | B | 75 | 0 | 0 | View report → |
| 70611 | B | 80 | 0 | 0 | View report → |
| 70615 | B | 80 | 0 | 0 | View report → |
| 70602 | A | 90 | 0 | 0 | View report → |
| 70606 | A | 95 | 0 | 0 | View report → |
| 70612 | A | 95 | 0 | 0 | View report → |
| 70616 | A | 95 | 0 | 0 | View report → |
| 70629 | A | 95 | 0 | 0 | View report → |
| 70609 | A | 99 | 0 | 0 | View report → |
Violation Trend
EPA violations recorded for water systems serving Lake Charles.
Water Quality Overview
Lake Charles, Louisiana receives a water quality grade of B with an overall score of 78 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
No EPA violations have been recorded for the 5 water systems serving Lake Charles. This is a positive indicator, though it does not guarantee the absence of all contaminants — some substances (like PFAS) are not yet fully regulated.
What Grade B Means
A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Lake Charles's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.
Lead Levels
The average 90th percentile lead level across Lake Charles water systems is 0.0008 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 49% of homes built before 1986, Lake Charles has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Lake Charles is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Lake Charles
Lake Charles is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 114,689 people across 11 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 110 enforcement actions against water systems serving Lake Charles. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Lake Charles
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Lake Charles:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2021 | 11 | 11 |
| 2022 | 11 | 11 |
| 2024 | 33 | 33 |
Violations have increased from 11 in 2021 to 33 in 2024. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Lake Charles. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-23 | State Order Extension |
| 2025-09-19 | State Order Extension |
| 2025-07-22 | State Informal Action |
| 2025-04-17 | State Order Extension |
| 2024-11-27 | State Informal Action |
| 2024-10-04 | State Informal Action |
| 2024-10-04 | State Informal Enforcement |
| 2024-10-01 | State Informal Action |
| 2024-10-01 | State Informal Enforcement |
| 2024-02-05 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-23.
Lake Charles vs. Nearby Louisiana Cities
How Lake Charles's water quality compares to similar cities in Louisiana:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Lake Charles | B | 0 | 5 | 114,689 |
| Bourg | D | 0 | 1 | 116,460 |
| Chauvin | F | 0 | 1 | 116,460 |
| Dulac | F | 0 | 1 | 116,460 |
Water Quality by ZIP Code in Lake Charles
Water quality varies across Lake Charles's ZIP codes. The table below shows the worst-scoring and best-scoring areas:
| ZIP Code | Score | Grade | Violations | Health-Based |
|---|---|---|---|---|
| 70601 | 75 | B | 0 | 0 |
| 70605 | 75 | B | 0 | 0 |
| 70607 | 75 | B | 0 | 0 |
| 70611 | 80 | B | 0 | 0 |
| 70615 | 80 | B | 0 | 0 |
| 70602 | 90 | A | 0 | 0 |
| 70606 | 95 | A | 0 | 0 |
| 70612 | 95 | A | 0 | 0 |
| 70616 | 95 | A | 0 | 0 |
| 70629 | 95 | A | 0 | 0 |
| 70609 | 99 | A | 0 | 0 |
| 70629 | 95 | A | 0 | 0 |
| 70616 | 95 | A | 0 | 0 |
| 70612 | 95 | A | 0 | 0 |
| 70606 | 95 | A | 0 | 0 |
Water quality scores in Lake Charles range from 75 to 99 — a spread of 24 points. This variation means your specific ZIP code matters significantly.
Common Questions About Lake Charles Water
These are the most common questions residents search for about water quality in Lake Charles, Louisiana:
Is Lake Charles water hard or soft? Water hardness varies by source. Lake Charles's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Lake Charles tap water? Lake Charles's water receives a grade of B (78/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Lake Charles? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Lake Charles vs. Louisiana Average
Understanding how Lake Charles compares to the broader Louisiana average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Lake Charles.
ZIP Codes in Lake Charles
Lake Charles spans 11 ZIP codes. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.
Frequently Asked Questions
Your Water is Safe — Here's How to Keep It That Way
Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.