Living in Folsom, LA: what to set up and who to call
Folsom Water Supply reported one health-based violation to EPA in the last five years: a groundwater treatment requirement (Groundwater Rule), beginning Oct 2022. Power in Folsom comes from Washington-St Tammany E C, a cooperative utility rather than a private company.
I’m new in town
What to set up in Folsom, 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 Folsom.
Power comes from Washington-St Tammany E C
Washington-St Tammany E C (Washington-St Tammany E C, Inc), a cooperative utility, serves all of Folsom. Its homes paid an average of 11.0¢ per kWh in 2025, about $146 a month (its average across Louisiana).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Folsom Water Supply
Folsom Water Supply supplies Folsom: about 83% of residents live in its service area. About 17% 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 1,992 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule), beginning Oct 2022. 78% of the 7,966 systems serving 1,001–3,300 people had none.
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. The highest in five years was 1.0 ppb. 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 (EPA’s estimate). Violations are counted by the start of their compliance period. LA1103014.
4 home internet providers serve Folsom
94% of 361 addresses can get 100/20 Mbps; 57% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 89% | 1,000/1,000 |
| Vexus Fiber | Fiber | 48% | 1,000/1,000 |
| AT&T | DSL, Fiber, Fixed wireless | 35% | 25/3 |
| Verizon | Fixed wireless | 76% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Folsom’s trash rules yet
Pickup rules, the dump and recycling in Folsom.
Where your child goes to school
Public school districts and the school path by grade.
Folsom is in St. Tammany Parish 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 Aug 2015; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Folsom is in ZIP code 70437
ZIP codes where Folsom residents live, with the share of the town in each.
| ZIP | Post office name | Share of Folsom | ZIP’s residents in Folsom |
|---|---|---|---|
| 70437 | Folsom, LA | 100% | 10% |
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 Folsom
Who supplies Folsom’s drinking water, and has it had violations?
Folsom Water Supply (EPA ID LA1103014). It reported 1 health-based violation to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule). 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 Folsom?
Washington-St Tammany E C (Washington-St Tammany E C, Inc), a cooperative utility. Its homes paid about 11.0¢ per kWh in 2025 (EIA).
What internet providers serve Folsom?
Spectrum, Vexus Fiber, AT&T, Verizon (FCC, as of December 2025).
What ZIP codes are in Folsom?
70437. Census 2020 ZIP Code Tabulation Areas.
What school district is Folsom in?
St. Tammany Parish School District.
How do I register to vote in Folsom?
In Louisiana you can register online until 20 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 St Tammany Parish Registrar of Voters. Check your registration at voterportal.sos.la.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 Aug 3, 2026 (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.