How does water runoff harm Virginia's water supply?

Water runoff in Virginia can harm the water supply by carrying pollutants such as fertilizers, pesticides, and sediments into rivers and streams, leading to water quality degradation. This runoff can contribute to algal blooms, which deplete oxygen levels and harm aquatic life. Additionally, increased sedimentation can disrupt habitats and reduce the effectiveness of water treatment processes. Overall, contaminated runoff poses significant risks to both ecosystems and public health.