Living in Port Mansfield, TX: what to set up and who to call
The Port Mansfield PUD water system reported 8 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×7, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size reported none. Port Mansfield has no town government of its own, so Willacy County runs its elections and most services, and its children attend San Perlita Independent School District.
I’m new in town
What to set up in Port Mansfield, 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 Port Mansfield.
Power comes from Magic Valley Electric Coop
Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility, serves all of Port Mansfield. Its homes paid an average of 10.5¢ per kWh in 2025, about $140 a month (its average across Texas).
Start or move service: magicvalley.coop · (866) 225-5683
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Port Mansfield PUD water system
The Port Mansfield PUD water system supplies almost all of Port Mansfield. It buys treated surface water (EPA lists North Alamo WSC and City of Raymondville as sellers) and serves 800 people in all.
8 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7, a lead and copper treatment requirement (Lead and Copper Rule Revisions), the latest beginning Apr 2026. 78% of the 5,327 systems serving 501–1,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.2 ppb, below the 15 ppb action level that applied. The highest in five years was 4.9 ppb. That’s higher than 57% 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. TX2450004.
3 home internet providers serve Port Mansfield
100% of 580 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Valley Telephone Cooperative | Fiber, Fixed wireless | 100% | 1,000/1,000 |
| Verizon | Fixed wireless | 80% | 300/20 |
| T-Mobile | Fixed wireless | 80% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Port Mansfield’s trash rules yet
Pickup rules, the dump and recycling in Port Mansfield.
Where your child goes to school
Public school districts and the school path by grade.
Port Mansfield is in San Perlita Independent School 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
Port Mansfield is unincorporated, so Willacy County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Port Mansfield is in ZIP code 78598
ZIP codes where Port Mansfield residents live, with the share of the town in each.
| ZIP | Post office name | Share of Port Mansfield | ZIP’s residents in Port Mansfield |
|---|---|---|---|
| 78598 | Port Mansfield, TX | 100% | 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 Port Mansfield
Who supplies Port Mansfield’s drinking water, and has it had violations?
The Port Mansfield PUD water system (EPA ID TX2450004). It reported 8 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 1.2 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Port Mansfield?
Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility. Its homes paid about 10.5¢ per kWh in 2025 (EIA).
What internet providers serve Port Mansfield?
Valley Telephone Cooperative, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Port Mansfield?
78598. Census 2020 ZIP Code Tabulation Areas.
What school district is Port Mansfield in?
San Perlita Independent School District.
How do I register to vote in Port Mansfield?
Texas 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 Willacy County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.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: 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.