1. Water quality determination Kuruvunga springs Catalina Marambio Jones SEE-LA GK12 program March 20 th, 2013

2. Common water quality parameters Temperature pH Alkalinity Hardness Turbidity Dissolved oxygen Nutrients Coliform bacteria

3. pH

4. Alkalinity

5. Hardness Classificationhardness in mg/L Soft0–60 Moderately hard61–120 Hard121–180 Very hard≥ 181

6. Turbidity

8. Dissolved oxygen

9. Nutrients: nitrogen and phosphorus

11. Coliform bacteria

12. 3 min think, pair, share Please answer: What is alkalinity? Dissolved oxygen concentration increases, decreases or stays the same as the water temperature decreases? What causes eutrophication?

13. Kuruvunga springs

16. THANKS!