1. Microbes, Microbes, Everywhere

2. The Good, the Bad, and the Ugly
Algae Copepod Amoeba E. coli

3. Not all Microbes are Bad
Yogurt – lactobacilli Bread – Yeast Human gut

4. But what if the wrong microbes end up in our water?

8. Ways to clean water

9. Your mission: Find a low cost, effective way to clean drinking water

10. Let’s Try SODIS: Solar Disinfection

12. Sun Power

13. Ultraviolet - UV

14. Infrared - IR

15. What could be in dirty water?

16. What could be in dirty water?
Algae Copepod Amoeba E. coli

17. Removing some of the Ugly:
Sari filtration
Toys: Algae (green), amoeba (blue), copepod (orange)
akvopedia.org

18. What about E. coli?

19. SODIS Supplies Water from Stephen’s Creek
Glass bottles, plastic baggies
SODIS table
Aluminum foil
Fabric for sari filtration
Black tarp
Box
Tape/markers

20. SODIS Variables Glass bottles vs. baggies
Reflective surface vs. black/white surface
Placement of the bottles/baggies (standing up or laying flat)
Sari filtered vs. non-filtered water ?

21. Experiment Write your team’s question Write your hypothesis
(ex. Does aluminum foil work better than the SODIS table?)
Write your hypothesis
Set up your three containers
One control bottle or baggie (to be put in the control box (no sun)
Two containers for your variables
LABEL each container with your name and the variable you are testing