1. Brain Pop Please indicate if any of these water sources are considered polluted or not. In doing so, please explain your answer. 1. Cup of coffee 2. Muddy pond

2. Water Pollution

3. Global Water Use 3 ways that H2O is used globally 1. Residential-homes/daily use use 2. Agricultural- growing crops 3. Industrial- power plants, manufacturing manufacturing However, we do not receive any new supply of water, but it is collected in 3 ways However, we do not receive any new supply of water, but it is collected in 3 ways 1. Hydrological (H2O)cycle 2. Groundwater/aquifer 3. Treated by a facility

4. Residential Use Did you know…? Did you know…? In the United States 300 L (80 gal) of water is used daily In the United States 300 L (80 gal) of water is used daily Half of H2O is used tasks inside the home Half of H2O is used tasks inside the home Remaining is used for activities outside the home Remaining is used for activities outside the home India 41.1 L is used daily India 41.1 L is used daily

5. Water Pollution H2O Pollution: When chemical, physical, or biological waste is added 2 Types of sources they can be introduced I. Point Source: Pollution is discharged from a single source II. Non-Point Source: Comes from many different sources different sources

6. 4 Types of Pollutions I. Artificial Eutrophication I. Artificial Eutrophication Abundance of nutrients- natural process Abundance of nutrients- natural process Organic material builds up in the body of water- algae blooms (decrease oxygen) Organic material builds up in the body of water- algae blooms (decrease oxygen) Can be speed up by Phosphorus and Nitrogen Can be speed up by Phosphorus and Nitrogen II. Thermal Pollution II. Thermal Pollution Increase in temperature of water Increase in temperature of water H20 taken in by power plants to cool system, then it comes out warmer H20 taken in by power plants to cool system, then it comes out warmer

7. Types of Pollution III. Groundwater Pollution III. Groundwater Pollution Through percolation/infiltration Through percolation/infiltration IV. Ocean Pollution IV. Ocean Pollution Often pollutants are disposed directly into the water (legally) 85% come from activities on land- runoffs

8. Treatment 6 ways water is treat so that it is clean and safe enough to drink 6 ways water is treat so that it is clean and safe enough to drink Where does water go after it leaves your homes? Where does water go after it leaves your homes? Goes through sewage pipes to waste water treatment plant Goes through sewage pipes to waste water treatment plant Waste water: H2O that contains waste from homes and industries Waste water: H2O that contains waste from homes and industries

9. Steps In Cleaning Waste H2O 1: 1st Filtration 1: 1st Filtration Large organisms and trash is removed 2: Coagulation 2: Coagulation Alum is added to form a thick glob (flocs) causing bacteria glob (flocs) causing bacteria and other impurities to cling and sink to the bottom and other impurities to cling and sink to the bottom 3: 2nd Filtration 3: 2nd Filtration Remaining impurities are filtered by sand, gravel, and hard coal

10. 4: Chlorination Bacteria is stopped from growing by adding chlorine 5: Aeration Air is added to release unwanted gases, which improves the taste by reducing odor 6: Additional Fluoride is added to prevent tooth decay

11. Class Task Please provide a brief response to the following: Please provide a brief response to the following: 1. Do you think Artificial Eutrophication is more disturbing to the stability of a river than Natural Eutrophication? 1. Do you think Artificial Eutrophication is more disturbing to the stability of a river than Natural Eutrophication? 2. Indicate if you would drink from the following water sources and provide an explanation for each. 2. Indicate if you would drink from the following water sources and provide an explanation for each. I. The tap I. The tap II A spring or well II A spring or well III. A mountain stream III. A mountain stream IV. A nearby creek or lake IV. A nearby creek or lake V. Drainage ditch after a heavy rain V. Drainage ditch after a heavy rain