The microbial world -- Microbial metabolism and growth -- Role of microorganisms in biogeochemical cycles -- Pathogens and parasites in domestic wastewater -- Microbial indicators of fecal contamination -- Water and wastewater disinfection -- Introduction to wastewater treatment -- Activated sludge process -- Bulking and foaming in activated sludge plants -- Processes based on attached microbial growth -- Waste stabilizations ponds -- Sludge microbiology -- Anaerobic digestion of wastewater and biosolids -- Bioaerosols and bioodors from wastewater treatment plants -- Microbiological aspects of drinking water treatment -- Microbiological aspects of drinking water distribution -- Bioterrorism and drinking water safety -- Pollution control biotechnology -- Fate of xenobiotics and toxic metals in wastewater treatment plants -- Toxicity testing in wastewater treatment plants using microorganisms -- Public health aspects of wastewater and biosolids disposal on land -- Public health aspects of wastewater and biosolids disposal in the marine environment