water treatment

John Snow Questions for High School Students

John Snow Questions for High School Students

John Snow Questions (High School) 1. How old was John Snow when he began to work as an apprentice for Dr. Hardcastle? 2. How many people died in the 1831-1832 cholera epidemic in all of Europe? 3. Define miasma theory and germ theory.

Contamination Case Studies Presentation

Contamination Case Studies Presentation

When Water Goes Bad: A look at four cases of water contamination Let's look at 4 cases from Canada and the US. Milwaukee, WI - Cryptosporidium outbreak; North Battleford, SK - Cryptosporidium outbreak; New Orleans, LA - E. coli, cholera, fecal coliforms; Walkerton, ON - E. coli contamination