Photo: John Phelan · CC BY 3.0Living in Chelmsford, MA: what to set up and who to call
Chelmsford Water District reported one health-based violation to EPA in the last five years: disinfection byproducts (TTHM), beginning Jan 2026. Elections in Chelmsford are run by Chelmsford itself; register with the Chelmsford Town Clerk.
I’m new in town
What to set up in Chelmsford, 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 Chelmsford.
Power comes from National Grid
National Grid (Massachusetts Electric Co.), an investor-owned utility, serves all of Chelmsford. Its homes paid an average of 33.7¢ per kWh in 2025, about $164 a month (its average across Massachusetts, for customers on its standard service). Massachusetts lets you buy power from another supplier; 64% of National Grid’s home customers do, and National Grid still delivers it.
Start or move service: masselec.com · (972) 505-4700
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Chelmsford Water District
Chelmsford Water District supplies Chelmsford: about 72% of residents live in its service area. North Chelmsford Water Dist serves another 21%. East Chelmsford Water District serves another 6%. It draws ground water and serves 28,750 people in all.
1 health-based violation reported to EPA in the five years to October 2026: disinfection byproducts (TTHM), beginning Jan 2026. 83% of the 3,525 systems serving 10,001–50,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–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. MA3056000.
4 home internet providers serve Chelmsford
100% of 10,847 addresses can get 100/20 Mbps; 92% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Verizon | Fiber, Fixed wireless | 94% | 2,300/2,300 |
| T-Mobile | Fixed wireless | 54% | 100/20 |
| AT&T | Fixed wireless | 27% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Curbside recycling in Chelmsford: every week
Pickup days, the drop-off and recycling in Chelmsford, from the town’s own site.
Single-stream recycling
All your recyclables go in one bin, no sorting.
- Bottles, cans, and accepted containers
- Paper
- Cardboard
- Food and beverage cans
- Aluminum pie-type plates
We couldn’t find pickup days or drop-off hours. Check chelmsfordma.gov →
From chelmsfordma.gov, the town’s official site, checked Oct 21, 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.
Chelmsford is in Chelmsford School District.
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 Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Chelmsford spans 2 ZIP codes
ZIP codes where Chelmsford residents live, with the share of the town in each.
| ZIP | Post office name | Share of Chelmsford | ZIP’s residents in Chelmsford |
|---|---|---|---|
| 01824 | Chelmsford, MA | 74% | 100% |
| 01863 | North Chelmsford, MA | 26% | 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 Chelmsford
Who supplies Chelmsford’s drinking water, and has it had violations?
Chelmsford Water District (EPA ID MA3056000). It reported 1 health-based violation to EPA in the five years to October 2026: disinfection byproducts (TTHM). 83% of systems its size had none. Its latest lead 90th percentile was 2.4 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Chelmsford?
National Grid (Massachusetts Electric Co.), an investor-owned utility. Its homes paid about 33.7¢ per kWh in 2025 (EIA).
What internet providers serve Chelmsford?
Xfinity, Verizon, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Chelmsford?
01824 (74%), 01863 (26%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Chelmsford in?
Chelmsford School District.
How do I register to vote in Chelmsford?
In Massachusetts you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 10 days before). Elections here are run by the Chelmsford Town Clerk. Check your registration at sec.state.ma.us.
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: Chelmsford’s own website (chelmsfordma.gov), 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.