Water Quality in Grand Chenier, LA: 15 Violations — Grade D
Grade D · Score 47/100 · 1 water system · Updated 2026-05-03
Grand Chenier's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Grand Chenier, LA has 15 violations in the EPA compliance history — breakdown below.
Water Quality by ZIP Code in Grand Chenier
Water quality varies across Grand Chenier's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 70643 | C | 55 | 15 | 15 | View report → |
Violation Trend
EPA violations recorded for water systems serving Grand Chenier.
Water Quality Overview
Grand Chenier, Louisiana receives a water quality grade of D with an overall score of 47 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Grand Chenier have accumulated 15 EPA violations, including 15 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 871 people.
What Grade D Means
A grade of D indicates significant compliance issues. Grand Chenier's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.
Lead Levels
The average 90th percentile lead level across Grand Chenier water systems is 0.0020 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
Radon Risk
Grand Chenier 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 Grand Chenier
Grand Chenier is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 871 people across 1 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 10 enforcement actions against water systems serving Grand Chenier. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Grand Chenier
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
Contaminants Detected in Grand Chenier Water Systems
The following contaminants have been detected or caused violations across Grand Chenier's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 15 | 1 | Yes |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Grand Chenier:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2021 | 3 | 3 |
| 2022 | 4 | 4 |
| 2023 | 2 | 2 |
| 2024 | 4 | 4 |
| 2025 | 2 | 2 |
Violations have decreased from 3 in 2021 to 2 in 2025, indicating improving compliance.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Grand Chenier. Recent actions:
| Date | Action Type |
|---|---|
| 2025-08-08 | State Informal Action |
| 2025-07-11 | State Informal Action |
| 2025-07-11 | State Informal Enforcement |
| 2025-04-22 | State Informal Action |
| 2025-03-24 | State Informal Action |
| 2025-03-24 | State Informal Enforcement |
| 2025-02-11 | State Informal Action |
| 2025-01-07 | State Informal Action |
| 2025-01-07 | State Informal Enforcement |
| 2024-11-20 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-08-08.
Grand Chenier vs. Nearby Louisiana Cities
How Grand Chenier's water quality compares to similar cities in Louisiana:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Grand Chenier | D | 15 | 1 | 871 |
| Estherwood | B | 2 | 1 | 891 |
| Lisbon | B | 1 | 1 | 891 |
| Pine Prairie | B | 16 | 1 | 900 |
Common Questions About Grand Chenier Water
These are the most common questions residents search for about water quality in Grand Chenier, Louisiana:
Is Grand Chenier water hard or soft? Water hardness varies by source. Grand Chenier's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Grand Chenier tap water? Grand Chenier's water receives a grade of D (47/100). There are 15 health-based violations — consider filtration.
What is the best water filter for Grand Chenier? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Grand Chenier vs. Louisiana Average
Understanding how Grand Chenier 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 Grand Chenier.
ZIP Codes in Grand Chenier
Grand Chenier spans 1 ZIP code. The ZIP with the lowest water quality score is 70643. 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.