WWRC 88-09
Comparison of Study Methods for the Early Detection and Possible Causes of Taste Causing Algal Blooms in Laramie's Drinking Water
Abstract
The chlorophyll a concentration, the numbers of Asterionellar
Anabaena and total algal count and various chemical and physical
parameters were determined in Laramie's surface water source for a
period of three summers. In addition, data were collected at
various sites along the Laramie River and in Lake Sodergreen. Also,
the presence of geosmin was monitored by Closed Loop Stripping-Gas
Chromatography/Mass Spectrophotometry Analysis. All of this was
done to determine the cause and to predict taste and odor causing
algal blooms. No taste and odor causing algal blooms occurred
during the three years of this study, thus these data may be used
as background data for the future. It was determined that the
lake was well mixed and that the raw water in the plant gave a
reasonable estimate of the chemistry and microbiology of the lake.
Geosmin was found in the raw water at various time and throughout
the water plant. There is quite a problem in the reproducibility
of the geosmin test.
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