This is provided through many hot summer days. When all conditions are met, photosynthesis will take place and the algae will grow or proliferate. Aquatic fungi, actinomycetes, grow on dead and decaying algae and cause an earthy taste in the water. Laboratory personnel, through daily analysis, perform algal counts and can determine the onset of an algal bloom. With the onset of an algal bloom, additional chemicals are added to the treatment process.
Potassium permanganate is added as an oxidizing agent in reducing the odor levels.
To reduce the unpleasant taste, activated carbon is used as an absorption media. Each of these chemicals is removed during the treatment process prior to delivery of the potable water supply. Chlorine, which is used as the disinfectant in the treatment process, also aids in odor reduction. The water is safe to drink with no health hazards created regardless of taste and odor.