Living in Poestenkill, NY: what to set up and who to call
The Poestenkill Wd#1 water system reported one health-based violation to EPA in the last five years: disinfection byproducts (TTHM), beginning Jan 2022. Spectrum is the only wired internet provider that reaches most of Poestenkill.
I’m new in town
What to set up in Poestenkill, 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 Poestenkill.
Power comes from National Grid
National Grid (Niagara Mohawk Power Corp.), an investor-owned utility, serves 85.2% of Poestenkill residents. Its homes paid an average of 19.9¢ per kWh in 2025, about $130 a month (its average across New York, for customers on its standard service). New York lets you buy power from another supplier; 6% of National Grid’s home customers do, and National Grid still delivers it.
Start or move service: www1.nationalgridus.com · (315) 474-1511
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Poestenkill Wd#1 water system
The Poestenkill Wd#1 water system supplies Poestenkill: about 5% of residents live in its service area. About 90% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Brunswick Consolidated Water District as seller) and serves 752 people in all.
1 health-based violation reported to EPA in the five years to October 2026: disinfection byproducts (TTHM), beginning Jan 2022. 78% of the 5,327 systems serving 501–1,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 70% 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 (EPA’s estimate). Violations are counted by the start of their compliance period. NY4130338.
4 home internet providers serve Poestenkill
97% of 1,742 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 96% | 1,000/35 |
| Hudson Valley Wireless | Fixed wireless | 51% | 200/20 |
| Verizon | Fixed wireless | 35% | 300/20 |
| T-Mobile | Fixed wireless | 27% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
No curbside pickup in Poestenkill: trash goes to the drop-off
Pickup days, the drop-off and recycling in Poestenkill, from the town’s own site.
From poestenkillny.com, the town’s official site, checked Oct 21, 2026. 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 Poestenkill (72%) is in Averill Park Central School District; parts are in Berlin Central School District (22%) and Brunswick Central School District (Brittonkill) (6%).
B+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.
Poestenkill spans 5 ZIP codes
ZIP codes where Poestenkill residents live, with the share of the town in each.
| ZIP | Post office name | Share of Poestenkill | ZIP’s residents in Poestenkill |
|---|---|---|---|
| 12018 | Averill Park, NY | 39% | 22% |
| 12140 | Poestenkill, NY | 38% | 100% |
| 12198 | Wynantskill, NY | 17% | 10% |
| 12138 | Petersburg, NY | 4% | 6% |
| 12196 | West Sand Lake, NY | 2% | 2% |
A few homes fall in 12180.
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 Poestenkill
Who supplies Poestenkill’s drinking water, and has it had violations?
The Poestenkill Wd#1 water system (EPA ID NY4130338). It reported 1 health-based violation to EPA in the five years to October 2026: disinfection byproducts (TTHM). 78% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Poestenkill?
National Grid (Niagara Mohawk Power Corp.), an investor-owned utility. Its homes paid about 19.9¢ per kWh in 2025 (EIA).
What internet providers serve Poestenkill?
Spectrum, Hudson Valley Wireless, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Poestenkill?
12018 (39%), 12140 (38%), 12198 (17%), 12138 (4%), 12196 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Poestenkill in?
Averill Park Central School District. Parts of the city are in Berlin Central School District and Brunswick Central School District (Brittonkill).
How do I register to vote in Poestenkill?
In New York you can register online until 10 days before Election Day, in person until 10 days before Election Day, or by mail (postmarked 15 days before and received 10 days before). Elections here are run by the Rensselaer County Board of Elections. Check your registration at voterlookup.elections.ny.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: Poestenkill’s own website (poestenkillny.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 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.