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Typical Disinfection Chemicals 278 Disinfectant Feed Systems 279 Disinfection of Water Mains 280 Procedures for Disinfecting Storage Tanks

281

Procedure for Disinfecting Water Treatment Plants Disinfection of New Buildings 282 Procedure for Disinfection of Wells 283 Procedures for Maintaining Disinfection while Inspecting In-Service

281

Water Storage Facilities 284 Other Uses of Chlorine in Water Treatment Tastes and Odors 285

285

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CONTENTS

Distribution System 262

Regulatory Compliance for Distribution Systems Regrowth 264 Explanation of Terms Involving Regrowth 266 Factors Influencing Microbial Growth 269 Operation of the Distribution System 271 Monitoring 272 Control of Water Age 274 Secondary Disinfectant Residuals 275 Flushing 277 Treatment Plant Performance Impacts on Distribution System Water 264

Quality 278 Disinfection of New Infrastructure 278

Tastes and Odors from Algae and Actinomycetes Synthetic Sources of Tastes and Odors 288

286

Operation of the Chloramination Process Issues of Concern 253

251

Taste and Odor of Chlorine 289 Iron and Manganese 289 Oxidation of Iron 291 Oxidation of Manganese Coagulation Aid 293 Filtration Aid 293 Control of Mollusca in Seawater Zebra Mussels 296 Quagga Mussels 297 Aquifer Recharge 299 Hydrogen Sulfide Control Color Removal 303 Desalination 303 Reflecting Pools 304 Restoration of Wells 304 292 299

295

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