Photo: derivative work: AFBorchert AZ_264_Second_Mesa_2006_09_08.jpg: Reinhard Schön (original photograph) and Andreas F. Borchert (postprocessing) · CC BY-SA 3.0Living in Second Mesa, AZ: what to set up and who to call
An EPA health-based violation from 2026 is still open for the Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) water system, which supplies Second Mesa, and its latest lead result (5.0 ppb) was higher than 91% of similar systems’, though under the 15 ppb action level. Second Mesa has no town government of its own, so Navajo County runs its elections and most services, and its children attend Cedar Unified District.
I’m new in town
What to set up in Second Mesa, 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 Second Mesa.
Power comes from Navajo Tribal Utility Authority
Navajo Tribal Utility Authority (Navajo Tribal Utility Authority), a state utility, serves all of Second Mesa. Its homes paid an average of 16.5¢ per kWh in 2025, about $81 a month (its average across Arizona).
Start or move service: ntua.com · (800) 528-5011
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) water system
The Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) water system supplies Second Mesa: about 32% of residents live in its service area. Second Mesa Day School - Bia serves another 6%. About 64% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated ground water (EPA lists Huc Regional Water System as seller) and serves 609 people in all.
6 health-based violations reported to EPA in the five years to October 2026: arsenic ×3, a groundwater treatment requirement (Groundwater Rule) ×2, a lead and copper treatment requirement (Lead and Copper Rule Revisions), the latest beginning Jan 2026. 78% of the 5,327 systems serving 501–1,000 people had none. 2 older violations are still open, since 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 5.0 ppb, below the 15 ppb action level that applied. That’s higher than 91% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. 090400107.
1 home internet providers serve Second Mesa
0% of 274 addresses can get 100/20 Mbps; 3% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Hopi Telecommunications | DSL, Fiber | 82% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Second Mesa’s trash rules yet
Pickup rules, the dump and recycling in Second Mesa.
Where your child goes to school
Public school districts and the school path by grade.
Second Mesa is in Cedar Unified District.
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
Second Mesa is unincorporated, so Navajo County is the local government.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Second Mesa is in ZIP code 86043
ZIP codes where Second Mesa residents live, with the share of the town in each.
| ZIP | Post office name | Share of Second Mesa | ZIP’s residents in Second Mesa |
|---|---|---|---|
| 86043 | Second Mesa, AZ | 100% | 54% |
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.
Questions about living in Second Mesa
Who supplies Second Mesa’s drinking water, and has it had violations?
The Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) water system (EPA ID 090400107). It reported 6 health-based violations to EPA in the five years to October 2026: arsenic ×3, a groundwater treatment requirement (Groundwater Rule) ×2, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 5.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Second Mesa?
Navajo Tribal Utility Authority (Navajo Tribal Utility Authority), a state utility. Its homes paid about 16.5¢ per kWh in 2025 (EIA).
What internet providers serve Second Mesa?
Hopi Telecommunications (FCC, as of December 2025).
What ZIP codes are in Second Mesa?
86043. Census 2020 ZIP Code Tabulation Areas.
What school district is Second Mesa in?
Cedar Unified District.
How do I register to vote in Second Mesa?
In Arizona you can register online until 29 days before Election Day, in person until 29 days before Election Day, or by mail (postmarked 29 days before). Elections here are run by the Navajo County Recorder. Check your registration at my.arizona.vote.
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 Sep 12, 2025 (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.