Hundreds of hydrogeologists from all over the world have contributed to the São Paulo-Brussels Groundwater Declaration to inspire awareness around how imperative it is to protect groundwater through urgent actions. Sign the declaration and make your voice heard. Let’s make the invisible visible!
Make a difference in groundwater
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The main points of the declaration
Let’s make the invisible visible:
There must be an effort by governments, hydrogeologists, NGOs, and all of society to make perceptible this crucial resource for planetary well-being and dignified human life.
Groundwater is critical to Earth's survival:
Aquifers, our planet’s natural water reservoirs, hold 97% of the fresh and liquid water

Everyone must face these issues:
Sustainable groundwater management needs monitoring, regulation, and communication.

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It is imperative to protect groundwater through the following urgent actions:
Strengthen the institutions responsible for the governance of groundwater so that they promote efficient, inclusive, ethical, democratic, and socio-ecologically conscientious policies.

Institutions who have already signed it
Ricardo Hirata
President of the Scientific Committee of the 47th IAH Congress
José Paulo G. Netto
President of the Associação
Brasileira de Águas Subterrâneas ABAS
Everton de Oliveira
President of the 47th IAH Congress
Olivier Lagneau
President of the 48th IAH Congress
David Kreamer
President of the International
Association of Hydrogeologists
Marijke Huysmans
President of the Scientific Committee
of the 48th IAH Congress
John A. Cherry
Leader of the Groundwater Project
Miguel Rangel Medina
President of the Asociación Latinoamericana de Hidrología Subterránea para el Desarrollo (ALHSUD)
Tom Diez
Vice-President of the
Belgium Chapter of IAH
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Read the full declaration
*For safety reasons signatures are not the same ones in the original document.
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Who has signed? 
(Updated every week. Last update: November 26th)