Successively an operations engineer in Bergerac, later head of agencies in Mandelieu-la-Napoule and Cagnes-sur-Mer at Compagnie des Eaux et de l'Ozone, Philippe Guitard joined Compagnie Générale des Eaux in 1995 as Regional Director in Ponce (Puerto Rico). In 1997, he moved to the Czech Republic as CEO of the Vodarna Plzen subsidiary.
In 1999 he was appointed CEO of Veolia Water for the Czech Republic and in 2002 CEO of Veolia Water for Central Europe and Russia. In 2008, he was appointed Director of Veolia Water Europe (excluding France). In 2013 he is appointed Senior Executive Vice President, Central and Eastern Europe. He is a member of the Executive Committee and the Management Committee.