Wintersmith Park Historic District · Photo: Brad Holt · CC BY-SA 2.0Living in Ada, OK: what to set up and who to call
The Ada water system 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. For emergencies, Ada is closest to Mercy Hospital Ada, 2.1 miles away.
I’m new in town
What to set up in Ada, 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 Ada.
Power comes from OG&E
OG&E (Oklahoma Gas & Electric Co.), an investor-owned utility, serves all of Ada. Its homes paid an average of 12.5¢ per kWh in 2025, about $131 a month (its average across Oklahoma).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Ada water system
The Ada water system supplies Ada: about 97% of residents live in its service area. It draws ground water and serves 22,600 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. 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 1.7 ppb, below the 15 ppb action level that applied. The highest in five years was 2.1 ppb. That’s higher than 62% 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. OK2006201.
6 home internet providers serve Ada
100% of 6,911 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Sparklight | Cable, Fiber | 99% | 1,000/50 |
| AT&T | Fixed wireless, DSL | 29% | 25/3 |
| Atlink Services | Fixed wireless | 100% | 100/20 |
| 360 Broadband | Fixed wireless | 86% | 400/50 |
| Rise Broadband | Fixed wireless | 82% | 25/5 |
| T-Mobile | Fixed wireless | 6% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Ada depends on your street
Pickup days, the drop-off and recycling in Ada, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayFind your street’s day on adaok.com →
- Bulky itemsCall to book
City of Ada Landfill
We couldn’t find its opening hours.
Accepted at the curb
- Newspapers
- Jar lids
- Junk mail
- Copier paper
- Phonebooks
- Cardboard
- Cereal boxes
- White and brown paper bags
- Drink cartons
- Plastics #1 and #2
- Magazines
- Catalogs
- Softcover books
- Aluminum containers
- Steel and spiral wound paperboard containers
From adaok.com, the town’s official site, checked Oct 21, 2026; pages dated 2013-04-01. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Most of Ada (51%) is in Ada Public Schools; parts are in Byng Public Schools (36%) and Stonewall Public Schools (8%) and Latta Public Schools (4%).
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 Feb 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Ada is in ZIP code 74820
ZIP codes where Ada residents live, with the share of the town in each.
| ZIP | Post office name | Share of Ada | ZIP’s residents in Ada |
|---|---|---|---|
| 74820 | Ada, OK | 100% | 52% |
A few homes fall in 74871, 74842. 74821 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 Ada
Who supplies Ada’s drinking water, and has it had violations?
The Ada water system (EPA ID OK2006201). 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). 83% of systems its size had none. Its latest lead 90th percentile was 1.7 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Ada?
OG&E (Oklahoma Gas & Electric Co.), an investor-owned utility. Its homes paid about 12.5¢ per kWh in 2025 (EIA).
What internet providers serve Ada?
Sparklight, AT&T, Atlink Services, 360 Broadband, Rise Broadband, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Ada?
74820. Census 2020 ZIP Code Tabulation Areas.
What school district is Ada in?
Ada Public Schools. Parts of the city are in Byng Public Schools and Stonewall Public Schools and Latta Public Schools.
How do I register to vote in Ada?
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, Pontotoc 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: Ada’s own website (adaok.com), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.