Photo: JERRYE & ROY KLOTZ MD · CC BY-SA 3.0Living in Mendham, NJ: what to set up and who to call
Two school districts split the grades in Mendham: Mendham Borough School District and West Morris Region School District. Almost every address in Mendham can get fiber (97%, by the FCC’s map).
I’m new in town
What to set up in Mendham, 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 Mendham.
Power comes from JCP&L
JCP&L (Jersey Central Power & Light Co.), an investor-owned utility, serves all of Mendham. Its homes paid an average of 18.4¢ per kWh in 2025, about $145 a month (its average across New Jersey, for customers on its standard service). New Jersey lets you buy power from another supplier; 9% of JCP&L’s home customers do, and JCP&L still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Nj American Water - Short Hills
Nj American Water - Short Hills supplies almost all of Mendham. It draws surface water (EPA lists Montclair Water Bureau and East Hanover Twp Water Dept and Morris County Mua and Passaic Valley Water Commission and New Jersey American Water as sellers) and serves 217,230 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2026, was 3.0 ppb, below the 15 ppb action level that applied. That’s higher than 77% 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. NJ0712001.
4 home internet providers serve Mendham
100% of 1,770 addresses can get 100/20 Mbps; 97% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 98% | 1,200/35 |
| Verizon | Fiber, Fixed wireless | 98% | 2,300/2,300 |
| T-Mobile | Fixed wireless | 84% | 100/20 |
| AT&T | Fixed wireless | 64% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
In Mendham, you hire your own trash hauler
Pickup days, the drop-off and recycling in Mendham, from the town’s own site.
Recycling Center at Public Works
37 Ironia Road, Mendham, NJ 07945
- Mon7 am–3 pm
- Tue7 am–3 pm
- Wed7 am–3 pm
- Thu7 am–3 pm
- Fri7 am–3 pm
- Sat8 am–2:30 pm
Single-stream recycling
All your recyclables go in one bin, no sorting.
- Aluminum (soda) and tin/steel (tuna) food and beverage cans
- Cardboard and chipboard
- Mixed paper
From mendhamnj.org, the town’s official site, checked Oct 21, 2026; pages dated 6/1/2026. 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.
Mendham is in two districts that split the grades: Mendham Borough School District and West Morris Region 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 2020; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Mendham is in ZIP code 07945
ZIP codes where Mendham residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mendham | ZIP’s residents in Mendham |
|---|---|---|---|
| 07945 | Mendham, NJ | 100% | 50% |
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 Mendham
Who supplies Mendham’s drinking water, and has it had violations?
Nj American Water - Short Hills (EPA ID NJ0712001). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 3.0 ppb (Jan–Dec 2026), against a 15 ppb action level.
Who provides electricity in Mendham?
JCP&L (Jersey Central Power & Light Co.), an investor-owned utility. Its homes paid about 18.4¢ per kWh in 2025 (EIA).
What internet providers serve Mendham?
Xfinity, Verizon, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Mendham?
07945. Census 2020 ZIP Code Tabulation Areas.
What school district is Mendham in?
Mendham Borough School District and West Morris Region School District.
How do I register to vote in Mendham?
In New Jersey you can register online until 21 days before Election Day, in person until 21 days before Election Day, or by mail (postmarked 21 days before). Elections here are run by the Morris County Clerk. Check your registration at voter.svrs.nj.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: Mendham’s own website (mendhamnj.org), 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.