Types of Water Contamination
PATHOGENIC MICROORGANISMS
PROTOZOA (AMOEBAE, GIARDIA, LAMBLIA, CRYPTOSPORIDIA)
- Animal single-cell organisms, 1 - 15 microns* in size, which like bacteria get into drinking water through animal and human feces
- These hard-shelled parasites form cysts, which lead to acute gastrointestinal diseases in humans
- Common in unfiltered surface water. Have also been found in drinking water (Milwaukee, London, Sydney)
- A single cell is all it takes for an infection
BACTERIA (E-...