CONTENTS 1. Bacteriological Assessment of Urban Water Sources in Khamis Mushait Governorate, Southwestern Saudi Arabia 7 Bed L Sh AlOtaibi 2. Microbial Sulfate Reduction and Metal Attenuation in Ph 4 Acid Mine Water 25 Clinton D Church, Richard T Wilkin, Charles NAlpers, Robert O Rye and R Blaine McCleskey 3. The Association Between Drinking Water Turbidity and Gastrointestinal Illness: A Systematic Review 53 Andrea G Mann, Clarence C Tarn, Craig D Higgins and Laura C Rodrigues 4. Evaluation of the Webler-Brown Model for Estimating Tetrachloroethylene Exposure from Vinyl-Lined Asbestos Cement Pipes 68 Lisa A Spence, Ann Aschengrau, Lisa E Gallagher, Thomas F Webster, Timothy C Heeren and David M Ozonoff 5. Mass Stranding of Marine Birds Caused by a Surfactant Producing Red Tide 92 David A. Jessup, Melissa A. Miller, John P. Ryan, Hannah M. Nevins, Heather A. Kerkering, Abdou Mekebri, David B. Crane, Tyler A. Johnson, Raphael M. Kudela 6. Measuring Variability in Trophic Status in the Lake Waco/Bosque River Watershed 107 Angela D Rodriguez andMarty D Matlock 7. Contamination of Rural Surface and Ground Water by Endosulfan in Farming Areas of the Western Cape, South Africa 126 Dalvie MA, Cairncross E, Solomon A, London L 8. A Prospective Study of Rural Drinking Water Quality and Acute Gastrointestinal Illness 148 Strauss B, King W, Ley A, Hoey J R 9. Environmental Sanitation Crisis : More Than Just a Healdi Issue 160 Peter A. Harvey 10. Background Level of Pops in Ground Water Assessed on Chemical and Toxicity Analysis of Exposed Semipermeable Membrane Devices 168 Vladimir Koci, Tomds Ocelka and Roman Grabic 11. The Dual Nature of Metallothioneins in the Metabolism of Heavy Metals and Reactive Oxygen Species in Aquatic Organisms: Implications of Use as a Biomarkerof Heavy-Metal Effects in Field Investigations 190 E Gagne, C. Andre and C. Blaise 12. Just How Big Is the Schism Between the Health Sectorand the Water and Sanitation Sector in Developing Countries? 207 A. A. Cronin and K. Pond 13. Public Perceptions of Drinking Water: A Postal Survey of Residents with Private Water Supplies 216 Jones A Q, Dewey C E, Dore K, Majowicz S E, McEwen S A, David W T, Eric M, Carr D J, Henson S J 14. Evaluation of Stormwater Biofilter Media for Escherichia coli Removal in a Laboratory Microcosm 237 Gregory T. Kleinheinz, Tahitha Zehms and Kathryn Koenig 15. Acute Health Effects After Accidental Exposure To Styrene From Drinking Water in Spain 251 Alberto Arnedo-Pena, Juan Bellido-Blasco, Jose-Luis Villamarin-Vazquez, Jose-Luis Aranda-Mares, Nuria Font-Cardona, Fabriziomaria Gobba and Manolis Kogevinas 16. Investigation of Swedish Cases Reveals an Outbreak of Cryptosporidiosis at a Norwegian Hotel with Possible Links to In-House Water Systems263 Agnes Hajdu, Line Void, TorildA 0stmo, Anna Helleve, Sigrid R Helgebostad, Truls Krogh, Lucy Robertson, Birgitta dejong and Karin Nygdrd 17. Prevalence Study of Legionella spp. Contamination in Ferries and Cruise Ships 280 Antonio Azara, Andrea Piana, Giovanni Sotgiu, Marco Dettori, Maria Grazia Deriu, Maria Dolores Masia, Bianca Maria Are and Elena Muresu 18. Environmental Controls, Oceanography and Population Dynamics of Pathogens and Harmful Algal Blooms : Connecting Sources to Human Exposure 291 Julianne Dyble, Paul Bienfang, Eva Dusek, Gary Hitchcock, Fred Holland, Ed Laws, James Lerczak, Dennis J McGillicuddy Jr, Peter Minnett, Stephanie K Moore, Charles O 'Kelly, Helena Solo-Gabriele and John D Wang Index 316