There has been an increase in emissions and discharges of pollutants from some of Taiwan's factories in recent years, and because improvements to industrial drainage systems are not fully completed, farmers in some areas are still irrigating their fields with polluted water. Soil contaminated with excessive amounts of heavy metals can lead to contaminants finding their way into food crops, with the potential to affect the health of the general public. To ensure the safety of farm produce, the EPA started soil pollution investigation and remediation more than 30 years ago.
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