What is total alkalinity?

“The total amount of alkaline materials present in the water. Also called buffering capacity of the water. It is the water’s resistance to change in pH. Low total alkalinity causes metal corrosion, plaster etching and eye irritation. High total alkalinity causes scale formation, poor chlorine efficiency and eye irritation.” Parameters for Total Alkalinity: Minimum 60 ppm. Ideal 80-120pm. Maximum 140 ppm. Simply put “Total Alkalinity determines the speed and ease of the pH change.” IPSSA Basic Training Manual, 2006 pgs. 35, 40, 41