Kisii County will be the national host for Kenya's World Cleanup Day celebrations on September 20, 2026, with an estimated 15,000 participants expected to attend.

• An expected 15,000 attendees, including 12 governors and representatives from UN-Habitat.
• The event will be championed by Governor Simba Arati under the theme “From Clean Plates to Clean Cities.”
• Notable waste management achievements in Kisii include the transformation of the Nyambera dumpsite into a recreational park.