Water pollution is a major problem that affects many water sources. Stormwater is not treated before entering waterways, carrying contaminants from yards that can pollute lakes and streams. Most water pollution comes from land-based activities, and 40-46% of rivers and lakes are too polluted for safe activities. Each year, 25% of US beaches face advisories or closures due to pollution. Half the world's population faces problems with drinking water pollution. The document encourages individuals to reduce pollution through proper waste disposal and conservation efforts.