2. Water Pollution
contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater
occurs when pollutants are directly or indirectly discharged into water bodies w/o adequate treatment to remove harmful compounds.
Toxic substances are
Dissolved Suspended Deposited

3. Methods of Water Pollution
Industrial Waste Discharge
City Sewage Discharge
Methods of
Water Pollution
Agricultural
Spills
Dumping
Acid Rain

4. Types of Contaminants Sediments Bacteria, Viruses, Parasites
Metals
(Lead, Cadmium, Arsenic)
Sediments
Bacteria, Viruses, Parasites
Pesticides/Fertilizers
Nitrates, Phosphates, Ammonia
Types of
Contaminants
Radioactive
Material
Pharmaceuticals
Sewage

5. Types of Pollution

6. Eutrophication

7. No oxygen to support Life
5. Ecosystem DEATH
No oxygen to support Life
1. Extra Nutrients from fertilizers run-off into rivers and lakes
3. Algal Blooms
(Depletes Oxygen & Blocks Sunlight)
Plants Die
2. Plant growth increases (Algae, Duckweed, & other aquatic plants
4. Decomposition
Bacteria break down dead plants causing MORE oxygen depletion

8. Concentration of Toxin INCREASES as it moves up the food web
What Happens When Pollutants Get Into the Food Web??
Concentration of Toxin INCREASES as it moves up the food web
Biomagnification

9. Bioaccumulation
Accumulation of a toxin/contaminant in the FAT tissue of an organism.

11. Clean Water Act