Jacob and Hannah Leverton House · Public domainLiving in Preston, MD: what to set up and who to call
The Town of Preston water system reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. Talbot County Free Library - Easton Branch, 10.2 miles away, is the closest library to Preston.
I’m new in town
What to set up in Preston, 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 Preston.
Power comes from Delmarva Power
Delmarva Power (Delmarva Power), an investor-owned utility, serves all of Preston. Its homes paid an average of 21.8¢ per kWh in 2025, about $214 a month (its average across Maryland, for customers on its standard service). Maryland lets you buy power from another supplier; 3% of Delmarva Power’s home customers do, and Delmarva Power still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Town of Preston water system
The Town of Preston water system supplies almost all of Preston. It draws ground water and serves 750 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 78% of the 5,327 systems serving 501–1,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2023, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.1 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. MD0050005.
3 home internet providers serve Preston
100% of 332 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 1,200/35 |
| T-Mobile | Fixed wireless | 85% | 100/20 |
| Verizon | Fixed wireless | 14% | 25/6 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Preston’s trash rules yet
Pickup rules, the dump and recycling in Preston.
Where your child goes to school
Public school districts and the school path by grade.
Preston is in Caroline 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Aug 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Mar 11, 2026.
Preston is in ZIP code 21655
ZIP codes where Preston residents live, with the share of the town in each.
| ZIP | Post office name | Share of Preston | ZIP’s residents in Preston |
|---|---|---|---|
| 21655 | Preston, MD | 100% | 14% |
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 Preston
Who supplies Preston’s drinking water, and has it had violations?
The Town of Preston water system (EPA ID MD0050005). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Dec 2023), against a 15 ppb action level.
Who provides electricity in Preston?
Delmarva Power (Delmarva Power), an investor-owned utility. Its homes paid about 21.8¢ per kWh in 2025 (EIA).
What internet providers serve Preston?
Xfinity, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Preston?
21655. Census 2020 ZIP Code Tabulation Areas.
What school district is Preston in?
Caroline County Public Schools.
How do I register to vote in Preston?
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 Caroline 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.