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AWWA ACE54466
- Production Sources and Degradation of Algal Metabolites (MIB/Geosmin) in Arizona Reservoirs, Rivers, and Canals
- Conference Proceeding by American Water Works Association, 06/01/2001
- Publisher: AWWA
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Utilities can normally meet guidelines for regulated constituents that directly impact human health. However, many utilities experience taste and odor episodes that impact the public's perception of the safety of the drinking water. Two compounds responsible for earthy and musty taste and odors in drinking water supplies are Geosmin and 2- Methylisoborneol (MIB) which are produced by blue-green algae and actinomycetes. This paper presents baseline MIB and Geosmin data including trends along the water distribution system as well as seasonal considerations. MIB and Geosmin concentrations from a previous research project have also been included. Sample sites included locations along the water collection system in the Phoenix Metropolitan area. Water and algae samples were taken along the Central Arizona Project (CAP) and Salt River Project (SRP) Canals and the Verde and Salt Rivers including Bartlett Lake, Saguaro Lake and Lake Pleasant. Peak MIB and Geosmin concentrations occurred from late summer to fall. MIB concentrations were typically higher than Geosmin concentrations throughout the research area. The highest average MIB and Geosmin concentrations were measured in the Salt River and the Arizona Canal. Includes 5 references, table, figures.
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