Compliance with environmental laws and regulations governing materials management is central to WAPA's environmental management system. WAPA's Materials Management Program focuses on complying with applicable regulations for purchasing, handling, using and disposing of the wide variety of materials used in operating and maintaining WAPA's transmission system. Each regional office and the Headquarters implement the program through:
Spill control and response
Water pollution prevention
Groundwater protection
Air pollution control
Hazardous materials and transportation management
Hazardous waste management
Polychlorinated biphenyls management
Non-hazardous waste management
Storage tank management
Pesticide management
Integrated vegetation management
Emergency Planning and Community Right-to-Know Act implementation
Emergency response procedures
Comprehensive Response, Compensation and Liability Act implementation 
