Photo: TulGuy · CC BY 4.0Living in Dewar, OK: what to set up and who to call
The Dewar water system reported 11 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×7, disinfection byproducts (HAA5) ×3, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size reported none. Power in Dewar comes from East Central Oklahoma Elec Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Dewar, 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 Dewar.
Power comes from East Central Oklahoma Elec Coop
East Central Oklahoma Elec Coop (East Central Oklahoma Elec Coop Inc), a cooperative utility, serves all of Dewar. Its homes paid an average of 13.6¢ per kWh in 2025, about $155 a month (its average across Oklahoma).
Start or move service: www.ecoec.com · (918) 756-0833
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Dewar water system
The Dewar water system supplies Dewar: about 61% of residents live in its service area. About 35% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Henryetta Municipal Authority as seller) and serves 917 people in all.
11 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7, disinfection byproducts (HAA5) ×3, 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.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.6 ppb, below the 15 ppb action level that applied. The highest in five years was 1.8 ppb. That’s lower than 56% 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. OK3005613.
4 home internet providers serve Dewar
96% of 357 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Optimum | Cable | 78% | 940/35 |
| AT&T | Fixed wireless, DSL | 20% | 25/3 |
| Atlink Services | Fixed wireless | 100% | 100/20 |
| T-Mobile | Fixed wireless | 9% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Dewar’s trash rules yet
Pickup rules, the dump and recycling in Dewar.
Where your child goes to school
Public school districts and the school path by grade.
Most of Dewar (58%) is in Dewar Public Schools; parts are in Henryetta Public Schools (42%).
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 Feb 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Dewar is in ZIP code 74431
ZIP codes where Dewar residents live, with the share of the town in each.
| ZIP | Post office name | Share of Dewar | ZIP’s residents in Dewar |
|---|---|---|---|
| 74431 | Dewar, OK | 100% | 86% |
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 Dewar
Who supplies Dewar’s drinking water, and has it had violations?
The Dewar water system (EPA ID OK3005613). It reported 11 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7, disinfection byproducts (HAA5) ×3, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 0.6 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Dewar?
East Central Oklahoma Elec Coop (East Central Oklahoma Elec Coop Inc), a cooperative utility. Its homes paid about 13.6¢ per kWh in 2025 (EIA).
What internet providers serve Dewar?
Optimum, AT&T, Atlink Services, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Dewar?
74431. Census 2020 ZIP Code Tabulation Areas.
What school district is Dewar in?
Dewar Public Schools. Parts of the city are in Henryetta Public Schools.
How do I register to vote in Dewar?
In Oklahoma you can register online until 25 days before Election Day, in person until 25 days before Election Day, or by mail (received 25 days before). Elections here are run by the Secretary, Okmulgee County Election Board. Check your registration at okvoterportal.okelections.us.
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.