İSKİ — Istanbul Water & Sewerage App

İSKİ (İstanbul Su ve Kanalizasyon İdaresi) is the metropolitan authority responsible for Istanbul's drinking water, sewerage, and stormwater systems. The app lets subscribers view water bills, set up auto-pay, report leaks or sewage problems, and check scheduled water cuts in their district.

Moving to a new flat? The app also handles new-account setup and the address transfer of an existing subscription.