Photo: SunDawn · CC BY-SA 4.0Living in Mount Holly, NC: what to set up and who to call
Power in Mount Holly comes from City of Gastonia, a municipal utility rather than a private company. Spectrum and AT&T both wire most of Mount Holly; 71% of addresses can get fiber.
I’m new in town
What to set up in Mount Holly, 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 Mount Holly.
Power comes from City of Gastonia
City of Gastonia (City of Gastonia - (NC)), a municipal utility, serves 87.4% of Mount Holly residents. Its homes paid an average of 12.3¢ per kWh in 2025, about $111 a month (its average across North Carolina).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Mount Holly water system
The City of Mount Holly water system supplies Mount Holly: about 92% of residents live in its service area. About 8% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water (EPA lists City of Belmont as seller) and serves 19,200 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 2.1 ppb, below the 15 ppb action level that applied. The highest in five years was 3.7 ppb. That’s higher than 70% 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. NC0136020.
4 home internet providers serve Mount Holly
99% of 6,948 addresses can get 100/20 Mbps; 71% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 98% | 1,000/50 |
| AT&T | Fiber, DSL, Fixed wireless | 90% | 5,000/5,000 |
| Verizon | Fixed wireless | 80% | 300/20 |
| T-Mobile | Fixed wireless | 57% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Mount Holly depends on your street
Pickup days, the drop-off and recycling in Mount Holly, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayThe town’s pickup schedule (PDF)
Riverbend Recycling Center
146 Mountain Island Road, Mount Holly, NC 28120
From mtholly.us, the town’s official site, checked Oct 21, 2026; pages dated July 1, 2024, May 04, 2026. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Mount Holly is in Gaston County Schools.
B−School 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 May 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Mount Holly spans 2 ZIP codes
ZIP codes where Mount Holly residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mount Holly | ZIP’s residents in Mount Holly |
|---|---|---|---|
| 28120 | Mount Holly, NC | 86% | 63% |
| 28012 | Belmont, NC | 14% | 9% |
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 Mount Holly
Who supplies Mount Holly’s drinking water, and has it had violations?
The City of Mount Holly water system (EPA ID NC0136020). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 2.1 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in Mount Holly?
City of Gastonia (City of Gastonia - (NC)), a municipal utility. Its homes paid about 12.3¢ per kWh in 2025 (EIA).
What internet providers serve Mount Holly?
Spectrum, AT&T, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Mount Holly?
28120 (86%), 28012 (14%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Mount Holly in?
Gaston County Schools.
How do I register to vote in Mount Holly?
In North Carolina you can register online until 25 days before Election Day, in person with same-day registration during the early voting period, or by mail (postmarked 25 days before). Elections here are run by the Gaston County Board of Elections. Check your registration at vt.ncsbe.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: Mount Holly’s own website (mtholly.us), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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 Nov 18, 2024 (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.