Includes bibliographical references (pages 261-285).

1. Introduction and objectives -- 2. Review of natural organic matter removal process -- 3. Monitoring of elevated content waters -- 4. Treatment processes -- 5. Review of floc strength, breakage and measurement -- 6. Diagnostics -- 7. Conclusions and future research -- 8. Recommendations for utilities -- Appendix. HPSEC column calibration -- References -- Abbreviations. The overall aim of the project was to identify treatment strategies for dealing with elevated organic carbon levels in terms of organic load reduction and floc characteristics at elevated loads, and specifically to identify: the conditions under which conventional and alternative processes are suitable for use in the treatment of waters with a higher organic load, the effect of organic content on floc size, structure, strength, growth and break up, the effects of changes in floc structure on removal in physiochemical processes.