Grand Isle, LA: 1 Health Violation - Home Safety 99/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Grand Isle: A.
Checked records flag no major concern; missing data is unknown.
Grand Isle, LA scores in the upper band of the ZipCheckup grade.
How Grand Isle Compares
Data: EPA SDWIS
Grand Isle Water: The Quick Version
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.0024 mg/L.
- Homes built before 1986: 69% - older plumbing may contain lead solder.
- Estimated remediation: $800 per household.
- Health risk index (ZipCheckup composite of CDC data): 14.75.
Water Systems Serving Grand Isle
A single entry in the list below does not mean one utility serves all of Grand Isle, LA: it means one system appears there, while federal records link 1 to the area. Service areas and ZIP codes do not line up exactly, so the utility named on a household's water bill is the one whose record applies to that home.
- A
Overview
We track home safety data for 1 ZIP code in Grand Isle, Louisiana (population ~644), covering 1 community water system serving approximately 140,264 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Grand Isle: A (99/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Grand Isle water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0024 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 70358 | A | 1 | 1 | W Jefferson Ww District 2 |
All ZIP Codes in Grand Isle
- 70358 [A] - 1 violation ⚠
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Grand Isle
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Grand Isle
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Grand Isle's Housing Stock?
With 69% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Ask the water utility whether your address in Grand Isle has a lead service line; its inventory can answer what a median build year of 1976 cannot.
Over half of homes in Grand Isle were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Grand Isle: Remediation Cost in Perspective
Relative to home values, Grand Isle remediation estimates run low.
Estimated remediation costs in Grand Isle can be compared with local home values. The $450–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 56% above the Louisiana average.
Protecting Children from Lead in Grand Isle
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Grand Isle
Historical NFIP data for Grand Isle contains 4,294 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $20,528. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $800 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Grand Isle, LA