Coal ash, the byproduct of burning coal for electricity, is one of the largest industrial waste streams in the world, with U.S. coal plants producing over 100 million tons annually. This toxic residue, composed of fly ash, bottom ash, boiler slag, and flue gas desulfurization material, contains heavy metals such as arsenic, lead, and mercury. When stored in unlined ponds or landfills, it often leaches into groundwater, posing severe risks to public health and the environment. Studies have found that 94% of U.S. coal-fired power plants are contaminating nearby water sources, particularly affecting marginalized rural communities. Despite its toxicity, coal ash has historically been mismanaged, posing a pressing environmental crisis with far-reaching consequences.
Mounting public pressure and legal action have driven stricter enforcement of coal ash management. In a landmark decision, the U.S. Court of Appeals upheld the Environmental Protection Agency’s 2015 Coal Combustion Residuals (CCR) Rule, mandating groundwater monitoring, ash pond closures, and remediation plans for utility companies. Media outlets like The New York Times and CNN have covered the escalating controversy, including major lawsuits brought against utilities for polluting local water supplies and causing health issues such as cancer and organ failure. These legal precedents underscore the urgent need for viable, scalable solutions to coal ash waste, particularly as the EPA cracks down on non-compliant facilities.
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