Waikapu Landfill - Municipal Solid Waste Facility in Waikapu, Hawaii

Waikapu Landfill is an operational solid waste facility located on Honoapiilani Highway in Waikapu, Hawaii, within Maui County. As a landfill, it serves as a key component of the region's solid waste management infrastructure, handling municipal solid waste generated by local communities and businesses. The facility operates under the regulatory framework of the U.S. Environmental Protection Agency (EPA), including RCRA Subtitle D for municipal solid waste landfills and Clean Air Act standards for landfill gas emissions. In Hawaii, landfills must also comply with state-specific environmental regulations, particularly regarding groundwater protection and leachate management due to the islands' sensitive ecosystems. Waikapu Landfill plays a vital role in Maui County's waste management strategy, providing disposal capacity for the local population. Its location in a tropical island environment necessitates careful management of leachate and landfill gas to minimize environmental impact on nearby groundwater and air quality.

The landfill operates in a tropical island environment with high rainfall, which increases the potential for leachate generation and groundwater contamination. Proximity to coastal areas and sensitive ecosystems requires robust leachate collection and treatment systems. Landfill gas management, including methane capture, is critical to reduce greenhouse gas emissions and comply with Clean Air Act regulations.