A proposed series of U.S. Environmental Protection Agency (EPA) regulations that set maximum contaminant levels (MCLs) for per- and polyfluoroalkyl substances (PFAS) and other so-called ‘GenX chemicals’ are set to go into effect in the fall.
When you talk about water scarcity and the lack of clean drinking water, most people think about third-world countries. They don’t realize that there’s a growing threat to clean water right here at home in the United States. Look at the February train derailment in East Palestine, Ohio, where a fire forced the controlled release and burn of toxic chemicals to avoid an explosion. The resulting contamination killed thousands of fish in nearby streams and ignited concerns over soil and water quality.
Last month, the Biden-Harris Administration announced it is proposing the first-ever national drinking water standard for six per- and polyfluoroalkyl substances (PFAS). The proposal, if finalized, would regulate PFOA and PFOS as individual contaminants, and will regulate four other PFAS — PFNA, PFHxS, PFBS and GenX Chemicals — as a mixture.
It was August 2019 when I was last published in PM magazine. I wrote about the failure of cast iron soil pipe, which now has customers often waiting two weeks or often longer for a plumber. As the plumbing instructor at Ultimate Technical Academy, the administration is adding classes to accommodate the need for plumbers as quickly as possible.
A2L refrigerants are the latest refrigerants recognized by the U.S. Environmental Protection Agency and Significant New Alternatives Policy (SNAP) as substitutes in residential and light commercial air conditioning and heat pump systems.