WAHIAWA, Hawaii (Island News) — The City and County of Honolulu announced that the proposed location of Oahu’s next landfill will be in an area northwest of Wahiawa. The announcement was made on Tuesday, Dec. 10, 2024 which will be followed by the landfill siting decision required before Dec. 31. The decision is an important step toward closing the Waimanalo Gulch Sanitary Landfill (WGSL) in line with a Land Use Commission decision and order from 2019.