 In 1993 the "Loi Sapin" strengthened competition in the sector by limiting the duration of contracts to 20 years, among others.In 2010 the lease contracts for Paris with Suez and Veolia expired and the water system returned to public management (remunicipalization).Since the early 1990s a number of measures have been undertaken to strengthen competition, to fight corruption and to improve transparency in the French water and sanitation sector.