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ithompson is correct - chlorine is measured in the distribution system as either parts per million (ppm)or milligrams per liter (mg/L). As an example, if there was a flow rate through the water plant of 10,000,000 gallons per day that would be equal to 83,400,000 pounds per of waterper day. (1...

I am a little slow on the uptake, but if the flow rate is 300 gpm then that would be 18000 gal/hour. That would seem to come out to 0.018 gal = 1/1,000,000 of 18,000 gal. If the desire dose was 40 ppm, then that would require 40 x 0.018 gal/hr or 0.72 gal / hr cl2. If the sodium hypochlorite...