Wetlands play a primary role in water filtration by acting as natural sponges that absorb excess nutrients and contaminants from water sources. Through a complex interactions of soil, plants, and microorganisms, wetlands can effectively remove pollutants such as nitrogen and phosphorus, thus improving water quality before it enters larger bodies of water. Additionally, wetlands store floodwaters, reducing the risk of surrounding area flooding and providing critical habitat for diverse wildlife. Their significance extends to carbon storage and climate regulation, making them essential for overall ecosystem health.