Grand Isle, LA: 1 Health Violation - Home Safety 99/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Grand Isle: A.
No federal data flags a major home-safety concern for this ZIP.
Water systems serving Grand Isle hold a strong EPA compliance record - the city places among the better-performing areas in LA with few health-based violations on file.
How Grand Isle Compares
Data: EPA SDWIS
Grand Isle Water: The Quick Version
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.0024 mg/L.
- Homes built before 1986: 69% - older plumbing may contain lead solder.
- Estimated remediation: $1,700 per household.
- CDC health risk index: 14.75 - above typical levels.
Water Systems Serving Grand Isle
Consolidated water delivery characterizes Grand Isle, LA: among 1 system in federal records, one utility holds the dominant service position - carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.
- 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 lead level (90th percentile): 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 |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | 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). Water contamination can correlate with respiratory and chronic health conditions.
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. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
While newer cities carry lower aggregate plumbing risk from lead-era construction, Grand Isle sits firmly in the older category. The median build year of 1976 indicates that more than half the housing stock was built before 1986, when lead solder was still legally used in residential copper plumbing - and a substantial portion likely predates 1970, when lead pipes were still commonly installed for service lines. These two thresholds together define the elevated plumbing risk environment that older housing cities carry, independent of what the municipal water supply delivers to the meter.
Over half of homes in Grand Isle were built before 1986, when lead solder was banned. 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
In Grand Isle, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Grand Isle are relatively low compared to home values. The $1,100–$2,600 estimated range is a small fraction of median property value. Home values are 56% above the Louisiana average.
Protecting Children from Lead in Grand Isle
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 69% of Grand Isle stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
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 <strong>$1,700</strong> 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