Photo: Karen Apricot · CC BY-SA 2.0Living in Grand Isle, LA: what to set up and who to call
W Jefferson Ww District 2 reported one health-based violation to EPA in the last five years: disinfection byproducts (HAA5), beginning Apr 2022. The ER is a drive from Grand Isle: the closest is Lady of the Sea General Hospital, 23.9 miles away.
I’m new in town
What to set up in Grand Isle, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Grand Isle.
Power comes from Entergy Louisiana
Entergy Louisiana (Entergy Louisiana LLC), an investor-owned utility, serves all of Grand Isle. Its homes paid an average of 11.9¢ per kWh in 2025, about $147 a month (its average across Louisiana).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from W Jefferson Ww District 2
W Jefferson Ww District 2 supplies almost all of Grand Isle. It draws surface water and serves 140,264 people in all.
1 health-based violation reported to EPA in the five years to October 2026: disinfection byproducts (HAA5), beginning Apr 2022. 86% of the 332 systems serving 100,001–250,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 2.4 ppb, below the 15 ppb action level that applied. The highest in five years was 3.0 ppb. That’s higher than 74% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. LA1051004.
4 home internet providers serve Grand Isle
100% of 1,879 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| REV | Fiber | 100% | 1,000/1,000 |
| T-Mobile | Fixed wireless | 47% | 100/20 |
| Verizon | Fixed wireless | 31% | 300/20 |
| AT&T | Fixed wireless | 10% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Grand Isle’s trash rules yet
Pickup rules, the dump and recycling in Grand Isle.
Where your child goes to school
Public school districts and the school path by grade.
Grand Isle is in Jefferson Parish School District.
BSchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Feb 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Grand Isle is in ZIP code 70358
ZIP codes where Grand Isle residents live, with the share of the town in each.
| ZIP | Post office name | Share of Grand Isle | ZIP’s residents in Grand Isle |
|---|---|---|---|
| 70358 | Grand Isle, LA | 100% | 100% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Grand Isle
Who supplies Grand Isle’s drinking water, and has it had violations?
W Jefferson Ww District 2 (EPA ID LA1051004). It reported 1 health-based violation to EPA in the five years to October 2026: disinfection byproducts (HAA5). 86% of systems its size had none. Its latest lead 90th percentile was 2.4 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Grand Isle?
Entergy Louisiana (Entergy Louisiana LLC), an investor-owned utility. Its homes paid about 11.9¢ per kWh in 2025 (EIA).
What internet providers serve Grand Isle?
REV, T-Mobile, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Grand Isle?
70358. Census 2020 ZIP Code Tabulation Areas.
What school district is Grand Isle in?
Jefferson Parish School District.
How do I register to vote in Grand Isle?
In Louisiana you can register online until 20 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Jefferson Parish Registrar of Voters. Check your registration at voterportal.sos.la.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Aug 3, 2026 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.