Pollution Pollution Effects Contamination Bacterial Contamination Contaminated Water Oxygen Levels Contaminants Freshwater Risks Algal Blooms Pollution Control Public Health Risks Nitrate Exposure Contamination Risks Contamination Investigation Hazardous Chemicals Pollution Prevention Toxins Public Bathing Areas Filtration Microbial Ecology Dissolved Oxygen Levels Sanitation Chlorine in Pools Health Advisories Contamination Prevention Recreational Water Safety Lake Restoration Sanitation Practices Long-term Effects Microplastics Exposure Toxic Algae Effects Ecosystem Health Grey Water Usage Microplastics Microbiological Contamination Contamination Effects Chlorine Treatment Contaminated Water Sources Impact on Aquatic Life Impact of Debris Freshwater Contamination Aquifer Recharge Ecosystem Services Toxic Algae Public Safety Public Health Legionellosis Public Health Standards Safety Guidelines Turbidity Issues Toxic Metals Toxic Chemicals Fluoride Testing Protocols Stagnant Water Sources Biochemical Oxygen Demand Chemical Contaminants Aquatic Vegetation Ecosystem Restoration Sediment Control Toxic Algae Blooms Waste Impact Air Quality Monitoring Public Health Initiatives E. coli Contamination E. coli Pollutants Bacteria Levels Fecal Bacteria Air Quality Microplastics in Water Contamination Sources Fluoride in Drinking Water Bioindicators