Includes bibliographical references (p. 205-221).

1. Introduction -- 2. Effect of ambient nutrients and metals on nitrification in premise plumbing -- 3. Effect of organic and ammonia levels on nitrification and copper release -- 4. Nitification in premise plumbing : role of phosphate, pH, and pipe corrosion -- 5. Lead contamination of potable water due to nitrification -- 6. Accelerated chloramine decay and microbial growth resulting from nitrification in premise plumbing -- 7. Nitrification effect on corrosion on galvanized iron, copper and concrete -- 8. Effect of nitrification and GAC filtration on copper and lead leaching in home plumbing systems -- 9. Utility interview and case studies -- Appendix A. Nitrification in drinking water systems -- Appendix B. Nitification in premise plumbing : role of phosphate, pH, and pipe corrosion -- Appendix C. Culture independent quantification of ammonia oxidizing bacterial in drinking water systems -- Appendix D. Lead contamination of potable water due to nitrification -- Appendix E. Utility interview questionnaire -- References.