Photo: Z28scrambler · CC BY-SA 4.0Living in Patterson, LA: what to set up and who to call
City of Patterson Water System reported 7 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×7. 80% of systems its size reported none. The closest ER is Ochsner St. Mary, 6.6 miles away.
I’m new in town
What to set up in Patterson, 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 Patterson.
Power comes from Cleco Power
Cleco Power (Cleco Power LLC), an investor-owned utility, serves all of Patterson. Its homes paid an average of 14.3¢ per kWh in 2025, about $178 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 City of Patterson Water System
City of Patterson Water System supplies almost all of Patterson. It draws surface water (EPA lists St Mary Water & Sewer Comm #3 and St Mary Parish W&s #2 Bayou Vista as sellers) and serves 8,456 people in all.
7 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7, the latest beginning Apr 2026. 80% of the 5,012 systems serving 3,301–10,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 0.0 ppb, below the 15 ppb action level that applied. 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. LA1101006.
4 home internet providers serve Patterson
89% of 2,358 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Cox Communications | Cable | 87% | 2,000/100 |
| AT&T | DSL, Fixed wireless | 75% | 100/20 |
| Cajun Broadband | Fixed wireless | 90% | 25/5 |
| T-Mobile | Fixed wireless | 9% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Patterson’s trash rules yet
Pickup rules, the dump and recycling in Patterson.
Where your child goes to school
Public school districts and the school path by grade.
Patterson is in St. Mary Parish School District.
A−School 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 Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Patterson is in ZIP code 70392
ZIP codes where Patterson residents live, with the share of the town in each.
| ZIP | Post office name | Share of Patterson | ZIP’s residents in Patterson |
|---|---|---|---|
| 70392 | Patterson, LA | 100% | 71% |
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 Patterson
Who supplies Patterson’s drinking water, and has it had violations?
City of Patterson Water System (EPA ID LA1101006). It reported 7 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×7. 80% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Patterson?
Cleco Power (Cleco Power LLC), an investor-owned utility. Its homes paid about 14.3¢ per kWh in 2025 (EIA).
What internet providers serve Patterson?
Cox Communications, AT&T, Cajun Broadband, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Patterson?
70392. Census 2020 ZIP Code Tabulation Areas.
What school district is Patterson in?
St. Mary Parish School District.
How do I register to vote in Patterson?
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 Mary 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.