Industry leaders say there is no credible evidence that PVC pipes, which have been used for decades, are unsafe for use in drinking water systems and that multiple studies have shown they're more environmentally friendly than metal pipes.
, which is used to make PVC and CPVC – or polyvinyl chloride and chlorinated polyvinyl chloride.
For example, DeArmitt said, the report cites concerns about chemical leaching from PVC and CPVC pipes, but he cited other sources – including the World Health Organization – showing concentrations so low as to pose no health concerns. Even after a product is certified, Purkiss said, the NSF conducts unannounced, on-site audits to inspect the raw materials, review records and verify that production continues to meet all requirements.
Enck criticized those findings and said the plastics industry typically funds its own life cycle analyses to support its claims of environmental friendliness. Independent studies, she said, have shown the opposite. The East Palestine train derailment gave critics another opportunity to highlight their concerns. More than 5 tons of vinyl chloride, en route to a plant that makes plastic for PVC flooring, was released and burned. The material is a known carcinogen. The crash and fire led to a rash of health complaints from people living nearby.
“Right now it’s anywhere from $500 billion to $1 trillion to do this work,” Cudahay said. “I think that’s why there is a lot of noise coming to the surface again.”
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