What is caused by pollutants from farm runoff feedlots or septic tanks?

Pollutants from farm runoff, feedlots, and septic tanks can lead to water contamination, resulting in harmful effects on aquatic ecosystems and human health. Nutrients like nitrogen and phosphorus can cause algal blooms, which deplete oxygen in water and create dead zones. Pathogens and chemical pollutants can also contaminate drinking water sources, leading to diseases and health issues in communities. Overall, these pollutants disrupt ecosystems and pose significant risks to both environmental and public health.