Basic infrastructure in Naharlagun is managed by state government departments.
* **Electricity:** Supplied by the Department of Power, Arunachal Pradesh. While generally reliable, power cuts can occur during severe monsoons due to downed lines in the hills. * **Water:** The Public Health Engineering Department (PHED) supplies treated river water, though many households also rely on borewells and natural hill springs. * **Telecommunications:** 4G and broadband services are widely available through providers like Jio, Airtel, and BSNL. Internet connectivity has vastly improved but remains vulnerable to optical fiber cuts caused by road construction or landslides. * **Sanitation:** Managed by the IMC, solid waste management is an ongoing focus, with regular collection drives and evolving processing facilities.