Photo: Chris Litherland · CC BY-SA 3.0Living in El Dorado, AR: what to set up and who to call
El Dorado Waterworks reported 2 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×2. 83% of systems its size reported none. South Arkansas Regional Hospital, 0.5 miles away, is the nearest emergency room.
I’m new in town
What to set up in El Dorado, 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 El Dorado.
Power comes from Entergy Arkansas
Entergy Arkansas (Entergy Arkansas LLC), an investor-owned utility, serves all of El Dorado. Its homes paid an average of 13.4¢ per kWh in 2025, about $145 a month (its average across Arkansas).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from El Dorado Waterworks
El Dorado Waterworks supplies almost all of El Dorado. It draws ground water and serves 17,932 people in all.
2 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2, the latest beginning Oct 2025. 83% of the 3,525 systems serving 10,001–50,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 2.0 ppb, below the 15 ppb action level that applied. The highest in five years was 5.0 ppb. 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. AR0000550.
6 home internet providers serve El Dorado
96% of 8,067 addresses can get 100/20 Mbps; 56% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Optimum | Cable | 93% | 940/35 |
| AT&T | Fiber, Fixed wireless, DSL | 49% | 5,000/5,000 |
| TCW | Fiber | 25% | 2,000/2,000 |
| Right Fiber | Fiber | 12% | 5,000/5,000 |
| Verizon | Fixed wireless | 88% | 300/20 |
| T-Mobile | Fixed wireless | 43% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have El Dorado’s trash rules yet
Pickup rules, the dump and recycling in El Dorado.
Where your child goes to school
Public school districts and the school path by grade.
El Dorado is in El Dorado School District.
BSchool gradeSee 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 Aug 2015; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
El Dorado is in ZIP code 71730
ZIP codes where El Dorado residents live, with the share of the town in each.
| ZIP | Post office name | Share of El Dorado | ZIP’s residents in El Dorado |
|---|---|---|---|
| 71730 | El Dorado, AR | 100% | 57% |
71731 is P.O. box or single-organization ZIP with no homes.
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 El Dorado
Who supplies El Dorado’s drinking water, and has it had violations?
El Dorado Waterworks (EPA ID AR0000550). It reported 2 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2. 83% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in El Dorado?
Entergy Arkansas (Entergy Arkansas LLC), an investor-owned utility. Its homes paid about 13.4¢ per kWh in 2025 (EIA).
What internet providers serve El Dorado?
Optimum, AT&T, TCW, Right Fiber, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in El Dorado?
71730. Census 2020 ZIP Code Tabulation Areas.
What school district is El Dorado in?
El Dorado School District.
How do I register to vote in El Dorado?
Arkansas 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 Union County Clerk. Check your registration at voterview.ar-nova.org.
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.