Across
- 2. killing bacteria so that water is more drinkable
- 3. another word for getting a shot
- 4. removing particles from water
- 6. the process of removing algae
- 8. a substance that fights bacteria
- 9. capable of spreading diseases
- 12. a sickness or illness
Down
- 1. the process of removing salt from water
- 5. tablets things campers use to purify water
- 7. these are found in water when it has not been disinfected
- 10. another word for a needle
- 11. something that takes over a cell to reproduce