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APHA

SMWW 9711

Pathogenic Protozoa

2023

17

Standard methods for the examination of water and wastewater (543.3 APHA 24th ed. Ref. Treatises&monographs FL2)

Protozoa are an extremely diverse group of unicellular organisms. Although there are many pathogenic species, only a few are considered problems for the water industry. Pathogenic protozoa are widely distributed in water supplies, are relatively resistant to inactivation by chemical disinfectants, and have caused numerous waterborne outbreaks. These organisms generally cause diarrhea or gastroenteritis of varying severity, although more serious consequences (including death) can occur...