In such cases, representatives of line ministries in regions are the only actors in charge of implementation at sub-national level, whether these are central services or co-ordinated bodies of central services. However, central services and bodies representing line ministries in regions also play an important role - with other sub-national actors - in countries that have somewhat decentralised their water policy making, whether these are federal states, such as Belgium, or unitary, such as New Zealand. In addition, Mexico has Water Commissions in each autonomous community, while in France the STR is in charge of co-ordinating the actions of the central government, regions and departements for a homogeneous implementation of water policies at basin level, co-ordinating central services of line ministries in regions and monitoring the enforcement of water regulations and compliance with them.