B & O Railroad Potomac River Crossing · Photo: MONGO. · Public domainLiving in Sandy Hook, MD: what to set up and who to call
Sandy Hook has no town government of its own, so Washington County runs its elections and most services, and its children attend Washington County Public Schools. The Sandy Hook water system has a clean five-year EPA record, but its latest lead result, 6.2 ppb, was higher than 94% of similar systems’ (the action level is 15).
I’m new in town
What to set up in Sandy Hook, 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 Sandy Hook.
Power comes from Potomac Edison
Potomac Edison (The Potomac Edison Co.), an investor-owned utility, serves all of Sandy Hook. Its homes paid an average of 15.4¢ per kWh in 2025, about $172 a month (its average across Maryland, for customers on its standard service). Maryland lets you buy power from another supplier; 2% of Potomac Edison’s home customers do, and Potomac Edison still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Sandy Hook water system
The Sandy Hook water system supplies Sandy Hook: about 77% of residents live in its service area. About 23% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 220 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 6.2 ppb, below the 15 ppb action level that applied. That’s higher than 94% 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. MD0210019.
4 home internet providers serve Sandy Hook
94% of 83 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Antietam Cable | Cable | 89% | 1,300/50 |
| T-Mobile | Fixed wireless | 94% | 100/20 |
| All Points Broadband | Fixed wireless | 59% | 10/1 |
| AT&T | Fixed wireless | 53% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 5 miles away
Pickup rules, the dump and recycling in Sandy Hook.
Kaetzel Rd Waste Transfer Station
2926 Kaetzel Rd, Knoxville, MD, 21758 · run by Washington Country Solid Waste
This isn’t Sandy Hook’s own facility. Whether Sandy Hook residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Sandy Hook is in Washington County Public Schools.
Test scores and every school: see Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Sandy Hook is unincorporated, so Washington County is the local government.
Election office: FVAP local election office directory, updated Aug 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Mar 11, 2026.
Sandy Hook is in ZIP code 21758
ZIP codes where Sandy Hook residents live, with the share of the town in each.
| ZIP | Post office name | Share of Sandy Hook | ZIP’s residents in Sandy Hook |
|---|---|---|---|
| 21758 | Knoxville, MD | 100% | 3% |
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 Sandy Hook
Who supplies Sandy Hook’s drinking water, and has it had violations?
The Sandy Hook water system (EPA ID MD0210019). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 6.2 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Sandy Hook?
Potomac Edison (The Potomac Edison Co.), an investor-owned utility. Its homes paid about 15.4¢ per kWh in 2025 (EIA).
What internet providers serve Sandy Hook?
Antietam Cable, T-Mobile, All Points Broadband, AT&T (FCC, as of December 2025).
What ZIP codes are in Sandy Hook?
21758. Census 2020 ZIP Code Tabulation Areas.
What school district is Sandy Hook in?
Washington County Public Schools.
How do I register to vote in Sandy Hook?
In Maryland you can register online until 21 days before Election Day, in person up to and including Election Day, or by mail (postmarked 21 days before). Elections here are run by the Washington County Board of Elections. Check your registration at voterservices.elections.maryland.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 Mar 11, 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.