HSY Helsinki Region Environmental Services Authority is a regional authority providing environmental services for residents and companies in the Helsinki area. Our principal duties comprise water and waste management as well as providing regional information services. HSY began its operations on 1 January 2010. HSY is the most prominent environmental body in Finland. It brings together the waterworks of Espoo, Helsinki, Kauniainen and Vantaa as well as the waste management services and the regional and environmental information services provided by the Helsinki Metropolitan Area Council (YTV). HSY employs approximately 800 people.