This document describes good practices for the incineration and other organic matter treatment by thermal processes of sludges. Thermal conditioning is excluded. This document applies to sludges specifically derived from: — storm water handling; — night soil; — urban wastewater collecting systems; — urban wastewater treatment plants; — treating industrial wastewater similar to urban wastewater. It includes all sludge that may have similar environmental and/or health impacts but excludes hazardous sludge from industry and dredged sludge.