Photo: Adam Moss from Macomb, IL, United States · CC BY-SA 2.0Living in Uncertain, TX: what to set up and who to call
Tap water in Uncertain comes from Caddo Lake WSC, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection. Jefferson Carnegie Library, 12.9 miles away, is the closest library to Uncertain.
I’m new in town
What to set up in Uncertain, 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 Uncertain.
Power comes from SWEPCO
SWEPCO (Southwestern Electric Power Co.), an investor-owned utility, serves all of Uncertain. Its homes paid an average of 12.6¢ per kWh in 2025, about $146 a month (its average across Texas).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Caddo Lake WSC
Caddo Lake WSC supplies almost all of Uncertain. It draws ground water and serves 1,230 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. TX1020019.
2 home internet providers serve Uncertain
70% of 154 addresses can get 100/20 Mbps; 52% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Valor Telecommunications of Texas | DSL | 76% | 200/20 |
| Spectrum | Fiber | 34% | 1,000/1,000 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Uncertain’s trash rules yet
Pickup rules, the dump and recycling in Uncertain.
Where your child goes to school
Public school districts and the school path by grade.
Uncertain is in Karnack 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.
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.
Uncertain is in ZIP code 75661
ZIP codes where Uncertain residents live, with the share of the town in each.
| ZIP | Post office name | Share of Uncertain | ZIP’s residents in Uncertain |
|---|---|---|---|
| 75661 | Karnack, TX | 100% | 4% |
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 Uncertain
Who supplies Uncertain’s drinking water, and has it had violations?
Caddo Lake WSC (EPA ID TX1020019). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Uncertain?
SWEPCO (Southwestern Electric Power Co.), an investor-owned utility. Its homes paid about 12.6¢ per kWh in 2025 (EIA).
What internet providers serve Uncertain?
Valor Telecommunications of Texas, Spectrum (FCC, as of December 2025).
What ZIP codes are in Uncertain?
75661. Census 2020 ZIP Code Tabulation Areas.
What school district is Uncertain in?
Karnack Independent School District.
How do I register to vote in Uncertain?
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 Harrison 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.