Transparency

Data sources

Public datasets and systems that power maps and ward data on NammaPoruppu.

Major sources we rely on:

  • OpenStreetMap (locality and geospatial reference data).
  • Greater Chennai Corporation ward boundaries and ward metadata (Chennai).
  • Coimbatore and Madurai municipal ward boundaries (2024 delimitation) from OpenCity.in (source: livingatlas.esri.in, public domain).
  • Chennai MLAs (2026 Tamil Nadu assembly election results) from OpenCity.in (ECI). Ward→assembly constituency mapping from OpenCity assembly boundary maps. MLA profile photos from MyNeta (ADR / ECI affidavits).
  • Chennai GCC ward councillors (2022 local body election results) from OpenDataChennai / OpenCity.in. MyNeta does not publish Chennai 2022 councillor photos; placeholder avatars are used.
  • User-submitted civic reports, photos, and support signals.