What are at least 5 contaminants?

Five common contaminants include lead, which can leach into drinking water from old pipes; pesticides, often found in agricultural runoff; heavy metals like Mercury, which can accumulate in fish; microplastics, pervasive in oceans and waterways; and bacteria such as E. coli, which can indicate fecal contamination in water sources. Each of these contaminants poses risks to human health and the environment.