Which agency enforces the regulations under RCRA?

The agency responsible for enforcing regulations under the Resource Conservation and Recovery Act (RCRA) is the Environmental Protection Agency (EPA). The RCRA is a key piece of legislation aimed at managing hazardous waste, and it establishes a framework for the proper handling, treatment, storage, and disposal of hazardous wastes. As the primary federal regulatory body, the EPA has the authority to create regulations that ensure compliance with these environmental standards, oversee state programs, and take enforcement actions against entities that violate hazardous waste regulations.

The EPA also provides guidance and support to state and local governments to aid them in enforcing their own hazardous waste programs, promoting a comprehensive approach to waste management across the country. This central role of the EPA in managing hazardous waste helps protect human health and the environment, making it the correct answer in the context of this question.