Fort Moultrie Quartermaster and Support Facilities Historic District · Photo: Brian Stansberry · CC BY 3.0Living in Sullivan's Island, SC: what to set up and who to call
Tap water in Sullivan's Island comes from the Sullivans Island Town of (1010003) water system, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result of 0.6 ppb. Children in Sullivan's Island attend Charleston County School District.
I’m new in town
What to set up in Sullivan's Island, 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 Sullivan's Island.
Power comes from Dominion Energy South Carolina
Dominion Energy South Carolina (Dominion Energy South Carolina, Inc), an investor-owned utility, serves all of Sullivan's Island. Its homes paid an average of 16.4¢ per kWh in 2025, about $169 a month (its average across South Carolina).
Start or move service: sceg.com · (800) 251-7234
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Sullivans Island Town of (1010003) water system
The Sullivans Island Town of (1010003) water system supplies almost all of Sullivan's Island. It buys treated surface water (EPA lists Charleston Water System (Sc1010001) and Isle of Palms W/S Comm (Sc1010004) as sellers) and serves 2,521 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.6 ppb, below the 15 ppb action level that applied. That’s lower than 58% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. SC1010003.
4 home internet providers serve Sullivan's Island
100% of 1,001 addresses can get 100/20 Mbps; 97% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | Fiber, DSL, Fixed wireless | 99% | 5,000/5,000 |
| T-Mobile | Fixed wireless | 79% | 100/20 |
| Verizon | Fixed wireless | 67% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Sullivan's Island’s trash rules yet
Pickup rules, the dump and recycling in Sullivan's Island.
Where your child goes to school
Public school districts and the school path by grade.
Sullivan's Island is in Charleston County School District.
ASchool 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 Apr 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Sullivan's Island is in ZIP code 29482
ZIP codes where Sullivan's Island residents live, with the share of the town in each.
| ZIP | Post office name | Share of Sullivan's Island | ZIP’s residents in Sullivan's Island |
|---|---|---|---|
| 29482 | Sullivans Island, SC | 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 Sullivan's Island
Who supplies Sullivan's Island’s drinking water, and has it had violations?
The Sullivans Island Town of (1010003) water system (EPA ID SC1010003). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.6 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Sullivan's Island?
Dominion Energy South Carolina (Dominion Energy South Carolina, Inc), an investor-owned utility. Its homes paid about 16.4¢ per kWh in 2025 (EIA).
What internet providers serve Sullivan's Island?
Xfinity, AT&T, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Sullivan's Island?
29482. Census 2020 ZIP Code Tabulation Areas.
What school district is Sullivan's Island in?
Charleston County School District.
How do I register to vote in Sullivan's Island?
In South Carolina you can register online until 30 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 Charleston Board of Voter Registration. Check your registration at vrems.scvotes.sc.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 Sep 12, 2025 (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.