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Brussels Governance Monitor

Watermael-Boitsfort: good transparency, political transition

Mayor : David Leisterh (MR)Coalition : MR-Les Engagés, Ecolo-Groen
Population : 25 327Postal code : 1170Area : 12.93 km²Council seats : 29
Up to date ·

Transparency grid

5/6 criteria

Budget online

Yes

Council minutes online

Yes

Council livestream

Yes

Municipal Open Data

No

Participation platform

Yes

Mandate registry

Yes

Key figures

25 327

Population

IBSA Mini-Bru 2026

12,93km²

Superficie

IBSA

Alerts

  • End of Ecolo era: David Leisterh (MR) new mayor1 December 2024
  • Naïades school: closure announced (birth rate −40%)3 March 2026

Brussels' greenest municipality

Watermael-Boitsfort is a residential municipality of 25,000 inhabitants, known for its green spaces (Sonian Forest) and garden cities. After 12 years of Ecolo mayoralty, David Leisterh (MR) takes over with an MR-Les Engagés + Ecolo-Groen coalition.

Transparency: 5 out of 6 criteria

The budget and council minutes are published online, the council is broadcast via livestream (dedicated page with replays), the mandate registry is accessible, and a participation service manages neighbourhood meetings and participatory budgets. No dedicated Open Data portal.

Political transition

David Leisterh's arrival as mayor marks the end of the Ecolo era in Watermael-Boitsfort. Ecolo nevertheless retains the CPAS presidency and two aldermanic positions in the new majority. Leisterh's dual role between his private sector activity and his duties as mayor has raised questions.

Recent developments

The Naïades school (primary education) has announced its closure due to a 40% decline in birth rate in the municipality, a demographic trend affecting several schools in Brussels' outer ring.

Sources

Official

Last updated: 17 March 2026

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