FrontMatter -- Preface -- Contents -- Summary -- 1 Introduction -- 2 EPA's Challenges in Water Security Research -- 3 Committee's Approach -- 4 Progress in the Office of Research and Development's Water Security Program -- 5 Recommendations for Improving Program Implementation -- 6 Recommendations for Future Research Directions -- References -- Acronyms -- Appendixes -- Appendix A Letter Report Dated November 10, 2005, to Kim Fox, Director, Water Infrastructure Protection Division, Environmental Protection Agency -- Appendix B Water Science and Technology Board -- Appendix C Biographical Sketches of Committee Members and Staff.