Includes bibliographical references (p. 223-232). Appendixes included on CD-ROM.

1. Introduction and approach -- 2. Literature review -- 3. Field study design -- 4. Processing and analytical methods -- 5. Utility participation and results -- 6. Accumulation trends -- 7. Conclusions and industry relevance -- References -- Appendix A. Field protocol -- Appendix B. Deposit characterization work -- Appendix C. Sample photographs. "The potential for the accumulation and intermittent release of trace inorganic and radiological contaminants within water distribution systems has gained considerable attention in the drinking water community over the past several years. These phenomena have been shown to result in at-the-tap concentrations of certain inorganic and radiological contaminants that far exceed their entry-point levels and in some cases, their drinking water standards." -- p. xxi.