Question

how does well water became polluted?​

Answer 1

Answer:

Pollution can occur from on-site sanitation systems, landfills, effluent from wastewater treatment plants, leaking sewers, petrol filling stations or from over application of fertilizers in agriculture. Pollution (or contamination) can also occur from naturally occurring contaminants, such as arsenic or fluoride.

Answer 2

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The EPA lists six major well water contaminants: microbiologicals, heavy metals, organic chemicals, radionuclides, fluoride and nitrates. Microbiological contaminants such as e. Coli bacteria occur naturally in the environment, and are found in soil and human and animal waste.