Woodland Baptist Church · Photo: rossograph · CC BY-SA 4.0Living in Mercer, TN: what to set up and who to call
Mercer has no town government of its own, so Madison County runs its elections and most services, and its children attend Jackson-Madison County School System. Tap water in most of Mercer comes from the Jea-Mercer Plant water system, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result of 0.7 ppb.
I’m new in town
What to set up in Mercer, 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 Mercer.
Power comes from Southwest Tennessee E M C
Southwest Tennessee E M C (Southwest Tennessee E M C), a cooperative utility, serves all of Mercer. Its homes paid an average of 13.7¢ per kWh in 2025, about $181 a month (its average across Tennessee).
Start or move service: stemc.com · (731) 772-1322
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Jea-Mercer Plant water system
The Jea-Mercer Plant water system supplies Mercer: about 51% of residents live in its service area. About 49% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 168 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.7 ppb, below the 15 ppb action level that applied. That’s lower than 52% 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. TN0000453.
2 home internet providers serve Mercer
100% of 90 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Aeneas Communications | Fiber | 100% | 1,000/1,000 |
| AT&T | Fixed wireless | 22% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Mercer’s trash rules yet
Pickup rules, the dump and recycling in Mercer.
Where your child goes to school
Public school districts and the school path by grade.
Mercer is in Jackson-Madison County School System.
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.
No town hall: the county runs things
Mercer is unincorporated, so Madison County is the local government.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Mercer is in ZIP code 38392
ZIP codes where Mercer residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mercer | ZIP’s residents in Mercer |
|---|---|---|---|
| 38392 | Mercer, TN | 100% | 20% |
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 Mercer
Who supplies Mercer’s drinking water, and has it had violations?
The Jea-Mercer Plant water system (EPA ID TN0000453). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.7 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Mercer?
Southwest Tennessee E M C (Southwest Tennessee E M C), a cooperative utility. Its homes paid about 13.7¢ per kWh in 2025 (EIA).
What internet providers serve Mercer?
Aeneas Communications, AT&T (FCC, as of December 2025).
What ZIP codes are in Mercer?
38392. Census 2020 ZIP Code Tabulation Areas.
What school district is Mercer in?
Jackson-Madison County School System.
How do I register to vote in Mercer?
In Tennessee you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Madison County Election Commission. Check your registration at tnmap.tn.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.