An old family friend who passed away in 1988 was a WWII (Pacific Theater) war vet. He used to tell me about the water tanks provided for them in the field, and that no one wanted to be at the end of the line because by then you were filling your canteen with the dregs, which meant it had a high concentration of chlorine. He said it was so strong that he could hardly drink it. I wonder what the concentration was in those tanks, particularly as it got to the last of it.
PS I never understood why the highest concentrations would be with the last of the water, but that's what he said.
