According to the data announced by the Central Statistical Office (GUS) in 2014 in Poland, there are more than three thousands municipal wastewater treatment plants. Most of them are relatively new. Modern and highly efficient wastewater treatment systems produce significant amounts of municipal sewage sludge. The amount of sludge starts to create huge problems in their proper management. In addition, from 1st of January 2016 storage of sewage sludge, which so far has been one of the popular methods of sludge management will be impossible. Thermal methods of disposal are currently considered as an interesting option in sludge management. Currently, in Poland there are several plants where sewage sludge is incinerated or dried. The paper presents the status of thermal method of municipal sewage sludge utilization before the date of storage disallowing.