Across
- 3. Basic practice to prevent the spread of disease
- 5. The process of removing contaminants from water
- 6. Essential for preventing disease
- 10. A common method for water purification
Down
- 1. Used instead of hot water and soap
- 2. Chemical used to disinfect water
- 4. The man who constructed the first working sewers
- 7. Bacteria causing disease
- 8. Regular testing of water ensures this
- 9. The man who made the link from cholera to water