This article documents the first known in situ electrochemical production of perchlorate within a public water distribution system. In this detailed incident, perchiorate (CIO4-) was detected in the distribution system of Levelland, Texas, and was eventually isolated to one elevated storage tank. Theoretical considerations supported the production of CIO4- by an electrochemical process within the tank. CIO4 was produced (64-113 μg/L in 338 h) in laboratory experiments that simulated the cathodic protection system in place in the storage tank. Because cathodic protection systems are widely used, this research confirms a potentially troubling mechanism of CIO4-generation.
|Number of pages
|Journal / American Water Works Association
|Published - Jul 2004