Introductory technical guidance for civil engineers, environmental engineers and other professional engineers and construction managers interested in design and construction of domestic water treatment plants. Here is what is discussed: 1. OVERVIEW, 2. REFERENCES, 3. TREATING WATER AT THE SOURCE, 4. UNIT TREATMENT PROCESSES, 5. TASTE AND ODOR CONTROL, 6. CONTROLLING ORGANIC CHEMICALS, 7. TREATMENT PLANT INSTRUMENTATION AND CONTROL, 8. CHEMICALS AND CHEMICAL APPLICATION, 9. WATER TREATMENT PLANT RESIDUES, 10. DESALINATION, 11. WATER SAMPLING AND ANALYSIS, 12. APPLICABLE PUBLICATIONS.