Wetland ecosystems play an essential role in water purification through natural filtering processes. They absorb excess nutrients, such as nitrogen and phosphorus, from agricultural runoff, preventing algal blooms that can harm aquatic life. Additionally, wetlands provide habitat for various species, promoting biodiversity and offering resilience against flooding. Through sediment trapping, they enhance water clarity and quality. The preservation of these ecosystems is vital for safeguarding fresh water supplies while also supporting wildlife and mitigating the effects of climate change. Their function in water management underscores their value in sustainable practices.