about water pollution

1. Water Quantity and Quality

2. What is Water Pollution? any physical (temperature, oxygen), chemical (mercury), or biological (disease, sewage) change to water that adversely effects its use by living things

3. Cuyahoga River, Ohio November 1952 Some river! Chocolate-brown, oily, bubbling with subsurface gases, it oozes rather than flows. "Anyone who falls into the Cuyahoga does not drown," Cleveland's citizens joke grimly. "He decays.” Time Magazine, August 1969

4. Groundwater Pollution

8. Water Borne Disease

9. U.S. Water Borne Disease

12. Dissolved Oxygen Added by: turbulent water and photosynthesis Removed by: Increased temperature (exsolution) and respiration/decomposition Good: > 6 ppm (mosquitoes can survive in 1 ppm) (also measured in % of maximum - Good = 60-80%)

13. Dissolved Carbon Dioxide Added by: respiration/decomposition & weathered rock Removed by: Increased temperature (exsolution) and photosynthesis Good: 1-10 ppm (usually about 1 ppm)

14. Oxygen Sag

15. Measuring DO and other chemical properties

17. Eutrophication Dissolved inorganic nitrogen in Baltic Sea & Blue Baby Syndrome

20. Arsenic in U.S. Waters

24. Artificial Chemicals

25. The Dirty Dozen

32. Controlling Water Quality What can we do?

41. Sewage in King County