Waste management is recognized as a critical requirement for the transition from a linear to a circular economic model. A circular economy could reduce environmental hazards and meet the targets set by the National Recovery and Resilience Plan and the European Green Deal. The shift towards a circular economy relies heavily on virtuous waste management [2]. In this context, the Italian government has launched several programs, regulations, and incentives. Some examples of these initiatives include consumer and company-focused awareness campaigns, rules for waste management, financial backing for green innovation, and encouragement of circular business models. To this purpose, this work employs a novel method of moment quantile regression (MMQR) approach to investigate the heterogenous effects of environmental laws along with other important control variables on environmental outcomes in Italian regions. The findings of MMQR approach confirm the heterogeneous impact of waste management laws on landfill and separate waste collection, thus providing useful policy implications for policymakers, which should consider heterogeneity when setting targets and constraints.