Waterless toilets, also known as dry toilets, are sanitation systems that do not require water for flushing. Instead, they use various methods to manage human waste, such as composting or incineration. These toilets are particularly useful in areas with limited water supply or where traditional plumbing is impractical. One common type of waterless toilet is the composting toilet, which breaks down waste into compost over time. Another option is the incinerating toilet, which burns waste to reduce it to ash. Waterless toilets can help conserve water and reduce environmental impact, making them a sustainable choice for many communities.