The Most (Not) Wanted

The following microorganisms are Not Wanted in drinking water anywhere.

Familiarize yourself with their appearance, habits, and methods of operation. If you suspect their presence in water, avoid them if possible - they are dangerous.

Report any evidence of their presence or activities to your healthcare professional or public health office.

Most (Not) Wanted

• Escherichia coli O157:H7 - Learn More
• Salmonella typhi - Learn More
• Campylobacter jejuni - Learn More
• Giardia lamblia - Learn More
• Vibrio cholerae - Learn More

E. coli Photo: © Dr. Linda Stannard, UCT / SCIENCE PHOTO LIBRARY
Salmonella typhi Photo: © Dr. Volker Brinkmann, MPI for Infection Biology
Campylobacter jejuni Photo: Dr. Patricia Fields, Dr. Collette Fitzgerald (PHIL #5781), 2004
Giardia lamblia Photo: CDC/ Janice Carr
Vibrio cholerae Photo: © Moredun Animal Health Ltd / SCIENCE PHOTO LIBRARY