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The Combine handbook

Living in Combine, TX: what to set up and who to call

Combine WSC reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. Oncor delivers the power in Combine, but in Texas’s open market you choose the company that sells it.

I’m new in town

What to set up in Combine, and who provides it. Tap an answer for the details and where they come from.

Home services

Power, water and internet

Who to call to start service at a new address in Combine.

Electricity

Power comes from Oncor

Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Combine.

Start or move service: oncor.com · (888) 875-6279

Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.

Drinking water · reported to EPA

Water comes from Combine WSC

Combine WSC supplies almost all of Combine. It buys treated surface water (EPA lists City of Seagoville as seller) and serves 3,588 people in all.

1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 80% of the 5,012 systems serving 3,301–10,000 people had none.

Lead, 90th percentile1.9 ppb
015 ppb action level20

The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 1.9 ppb, below the 15 ppb action level that applied. That’s higher than 65% 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. TX0570039.

Internet

6 home internet providers serve Combine

100% of 876 addresses can get 100/20 Mbps; 100% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
Open InfraFiber100%8,000/8,000
AT&TFixed wireless, DSL47%25/3
Wi-Five BroadbandFixed wireless93%100/100
VerizonFixed wireless54%300/20
T-MobileFixed wireless51%100/20
NextlinkFixed wireless44%100/20

FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.

Trash & recycling

We don’t have Combine’s trash rules yet

Pickup rules, the dump and recycling in Combine.

Schools

Where your child goes to school

Public school districts and the school path by grade.

Combine kids go to
PK–5157 elementary schoolsDepends on your address
6–857 middle schoolsDepends on your address
9–1240 high schoolsDepends on your address

Most of Combine (63%) is in Crandall Independent School District; parts are in Dallas Independent School District (37%).

C−School gradeSee Schools →

U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.

Government & voting

Town hall and registering to vote

Who to call, and how to register.

Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.

ZIP codes & area codes

Combine is in ZIP code 75159

ZIP codes where Combine residents live, with the share of the town in each.

ZIPPost office nameShare of CombineZIP’s residents in Combine
75159Seagoville, TX100%10%
Area code972Wikidata

Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.

Everyday places

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 Combine

Who supplies Combine’s drinking water, and has it had violations?

Combine WSC (EPA ID TX0570039). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 80% of systems its size had none. Its latest lead 90th percentile was 1.9 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.

Who provides electricity in Combine?

Oncor (Oncor Electric Delivery Co.), an investor-owned utility.

What internet providers serve Combine?

Open Infra, AT&T, Wi-Five Broadband, Verizon, T-Mobile, Nextlink (FCC, as of December 2025).

What ZIP codes are in Combine?

75159. Census 2020 ZIP Code Tabulation Areas.

What school district is Combine in?

Crandall Independent School District. Parts of the city are in Dallas Independent School District.

How do I register to vote in Combine?

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 Kaufman 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.