Preface xv Acknowledgements xviii Acronyms and abbreviations used in text xx 1. Introduction 1 2. The Guidelines: a framework for safe drinking-water 22 3. Health-based targets 37 4. Water safety plans 48 5. Surveillance 84 6. Application of the guidelines in specific circumstances 99 7. Microbial aspects 121 8. Chemical aspects 145 9. Radiological aspects 197 10. Acceptability aspects 210 11. Microbial fact sheets 221 12. Chemical fact sheets 296 Annex 1 Bibliography 461 Annex 2 Contributors to the development of the Third Edition of the Guidelines for Drinking-water Quality 467 Annex 3 Default assumptions 486 Annex 4 Chemical summary tables 488 Index 494