Full Description

This paper focuses on the current state of industry knowledge regarding theaccumulation and potential release of regulated inorganic and radiological contaminantswithin drinking water distribution systems. Several limited-focus case studies haveshown that certain contaminants, such as arsenic and radium, can accumulate withindistribution systems by a variety of mechanisms. Natural and treatment analogs suggestthe potential for other contaminants to accumulate as well. These contaminant-richdeposits can then be mobilized into the bulk water by hydraulic disturbances, scaledestabilization, and/or re-equilibration due to changing water chemistry.Investigation of this issue has become a high priority for the U.S. Environmental Protection Agency (USEPA) and the industrybecause of the potential for elevated contaminant concentrations at customer taps andpotential public health ramifications. As such, AwwaRF and USEPA have co-funded aresearch project entitled "Assessment of Inorganics Accumulation in Drinking WaterSystem Scales and Sediments" (AwwaRF 3118) to build upon the water industry'slimited understanding of the fate and transport of regulated inorganics and radionuclideswithin the distribution system. Includes 20 references, tables, figure.

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Edition: Vol. - No. Published: 03/01/2007 Number of Pages: 12File Size: 1 file , 350 KB