Sammakkokangas Oy is a waste management company owned by twelve municipalities. Owner municipalities are the cities of Äänekoski, Saarijärvi and Viitasaari and the municipalities of Pihtiputaa, Petäjävesi, Karstula, Hankasalmi, Uurainte, Kinnula, Kannonkoski, Multia and Kivijärvi. Sydän-Suomen jätelaukunta functions as the common waste authority of the owners' municipalities as defined by the Waste Act.

The company was founded at the end of 2003. The actual operation started at the beginning of 2004. The municipality of Uurainen became a shareholder of the company in August 2014, Äänekoski in April 2017, Petäjävesi in April 2018, and the municipalities of Multia and Hankasalmi at the end of 2019. The main place of the company's operations is the Sammakkokanka waste center in Saarijärvi, where the company's office and customer service are also located.

Sammakkokangas Oy is prepared for future waste management challenges. The company is a partner of Riikinvoima Oy, which is building a waste incineration plant. In addition, Sammakkokangas is a member of Suomen Kiertovoima ry. 

The company's tasks

Sammakkokangas manages waste collection, processing, maintenance of regional collection points, waste center and sorting station services, waste advice and invoicing in its operating area.

Sammakkokangas Oy was established to handle the waste management service tasks defined in the Waste Act (646/2011) that are the responsibility of the municipality, as well as to manage and develop waste center services. On the other hand, it was seen as important to establish a body that is familiar with the development of waste management. The owners have transferred the organization of waste management statutory service tasks to Sammakkokanka.

Waste management can be considered a necessity service that the municipality must guarantee to permanent and leisure residents in all situations. Sammakkokangas Oy maintains waste treatment services partly through its own operations and partly through its partners.