A government study says nearly half of the tap water in the US contains potentially harmful compounds known as “forever chemicals.”
  • TonyTonyChopper@mander.xyzEnglish
    1·
    1 year ago

    While this sounds concerning, “a few parts per trillion” is an incredibly low amount of anything. I would be curious to see how they actually achieved any precision in that range. The FDA limit on lead in bottled water is 5 parts per billion or 5,000 parts per trillion. The EPA limit in tap water is 15,000 ppt.