The water service’s development plan describes the planned expansion of the services
The member municipalities of Helsinki Region Environmental Services Authority municipal federation compile and update their region’s water service development plans in cooperation with their region’s municipal water services company HSY. These development plans describe the development of water services in relation to city plans and the service’s development in the sparsely populated areas.
The development plans of HSY’s member municipalities were updated at the same time in 2013. A summary of these municipal water services' development plans, Water services' development plan in the Helsinki Metropolitan Area 2013-2022, was compiled for the HSY’s member municipalities.
Water services’ operational area describes an area, where the water services department already offers water services or where it will offer them in the near future
Water services’ operational area describes an area, where the water services department is obligated to offer water services and in which the properties must be connected to the water services network of the water services department. In addition to HSY, water services in the HSY’s member municipalities are provided by seven water cooperatives. A map of the water services’ operational area 2014 is attached to the Water services’ development plan in the Helsinki Metropolitan Area. It has a compilation of the maps of the water services’ operational areas in the member municipalities of HSY in 2014.