Improper filter maintenance has been the cause of incidental contamination of drinking water. Filtering pool water through a layer of fine sand is one of the oldest forms of filtration. That’s probably why sand filter systems are one of the…
Improper filter maintenance has been the cause of incidental contamination of drinking water. Filtering pool water through a layer of fine sand is one of the oldest forms of filtration. That’s probably why sand filter systems are one of the…