Environmental policies in local government, operations and management of municipal waste treatment facilities with stoker type incinerators are examined by means of a nation-wide questionnaire survey. Most local governments have achieved reduction amount of wastes discharged and/or disposed. However, they have less performed in setting, and achieving targets of energy recovery volume and recycling volume. Furthermore, they do not sufficiently play in collaboration with other local governments in fully utilizing their existing treatment capacities for wastes from neighboring governments, except in the cases of disaster or accident events. This paper indicates a process flow diagram of expected responses of incineration facilities managers in the scenario of decreased volume of collected municipal wastes in the decline tendency of local population numbers: making out of services for partially operation methods in multiple furnace system in common, and followed by alternative courses of countermeasures in types of single or multiple treatment facilities.