This document discusses water pollution and how it occurs. It defines stormwater as rainwater running down streets into storm drains, carrying urban pollutants like trash, soil, oil, and pet waste directly into local waterways. Common pollutants are described, such as leaves clogging drains, animal waste spreading disease, and toxic chemicals from cars and household products poisoning water animals and plants by reducing oxygen levels. The document encourages readers to properly dispose of hazardous materials, clean up pet waste, and fix leaking vehicles to prevent stormwater pollution.