Nya still has to walk for water because access to clean water is still a challenge in many parts of the world, including some areas in Africa where Nya is from. Despite efforts to improve water infrastructure, there are still communities that lack access to safe and reliable water sources. This means that people like Nya have to walk long distances to fetch water for their daily needs. It's a difficult situation, but organizations and communities are working together to address this issue and provide better access to clean water.