Sleepy Hollow has the core infrastructure expected of an established Westchester County municipality. Systems have evolved over time from older village networks to modernized utilities serving both longstanding neighborhoods and new development.
- **Electricity:** Provided through the regional power grid; utility service is generally reliable though storms can cause outages, as elsewhere in the Northeast. - **Water:** Public water service is available; supply and treatment arrangements involve local and regional systems typical of Westchester municipalities. - **Sewer:** The village has sewer infrastructure serving developed areas; ongoing maintenance and capacity planning are important in older communities and redevelopment zones. - **Stormwater:** A significant planning issue due to riverfront location, aging systems, and heavier rain events. - **Internet:** Broadband internet is available through regional cable and telecommunications providers. - **Cellular service:** Standard service from major national carriers is available. - **Public works:** Roads, sanitation, drainage, and related services are handled through municipal structures with county and state coordination where needed.
As in many older Northeastern municipalities, infrastructure policy often focuses on resiliency, maintenance of aging systems, adaptation to redevelopment pressure, and environmental compliance near the Hudson River.