Living in Arnold Line, MS: what to set up and who to call
Arnold Line has no town government of its own, so Lamar County runs its elections and most services, and its children attend Lamar County School District. Tap water in Arnold Line comes from Arnold Line Water Association, which has a clean five-year EPA record (about 20% of systems its size had a health-based violation) and a latest lead result of 0.8 ppb.
I’m new in town
What to set up in Arnold Line, 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 Arnold Line.
Power comes from Mississippi Power
Mississippi Power (Mississippi Power Co), an investor-owned utility, serves all of Arnold Line. Its homes paid an average of 15.7¢ per kWh in 2025, about $179 a month (its average across Mississippi).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Arnold Line Water Association
Arnold Line Water Association supplies almost all of Arnold Line. It draws ground water and serves 6,600 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.8 ppb, below the 15 ppb action level that applied. The highest in five years was 1.2 ppb. That’s lower than 59% 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. MS0370001.
5 home internet providers serve Arnold Line
100% of 952 addresses can get 100/20 Mbps; 54% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 1,200/35 |
| AT&T | Fiber, Fixed wireless | 79% | 5,000/5,000 |
| C Spire | Fixed wireless | 74% | 100/20 |
| T-Mobile | Fixed wireless | 70% | 100/20 |
| Verizon | Fixed wireless | 69% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Arnold Line’s trash rules yet
Pickup rules, the dump and recycling in Arnold Line.
Where your child goes to school
Public school districts and the school path by grade.
Arnold Line is in Lamar County School District.
A−School gradeSee 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
Arnold Line is unincorporated, so Lamar County is the local government.
Election office: FVAP local election office directory, updated Sep 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Arnold Line is in ZIP code 39402
ZIP codes where Arnold Line residents live, with the share of the town in each.
| ZIP | Post office name | Share of Arnold Line | ZIP’s residents in Arnold Line |
|---|---|---|---|
| 39402 | Hattiesburg, MS | 100% | 5% |
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 Arnold Line
Who supplies Arnold Line’s drinking water, and has it had violations?
Arnold Line Water Association (EPA ID MS0370001). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 0.8 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Arnold Line?
Mississippi Power (Mississippi Power Co), an investor-owned utility. Its homes paid about 15.7¢ per kWh in 2025 (EIA).
What internet providers serve Arnold Line?
Xfinity, AT&T, C Spire, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Arnold Line?
39402. Census 2020 ZIP Code Tabulation Areas.
What school district is Arnold Line in?
Lamar County School District.
How do I register to vote in Arnold Line?
Mississippi has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Lamar County Registrar. Check your registration at msegov.com.
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 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.