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WATER and WATER POLLUTIONWATER and WATER POLLUTION
Water - Fresh vs. Salt (and everything in between)
Water Cycle
Water Quality Indicators
Water Pollution - point and non-point
Water Conservation
Water Environmental Disasters
Water - Fresh vs. Salt (and everything in between)
Water Cycle
Water Quality Indicators
Water Pollution - point and non-point
Water Conservation
Water Environmental Disasters
Where is the Water?Where is the Water?
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The Water CycleThe Water Cycle
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…..Evaporation, Condensation, Precipitation, Runoff, Infiltration, Transpiration…..
Use of water in the U.S.Use of water in the U.S.
United States
Industry 11%
Public 10%
Powercooling
38%
Agriculture38%
How can we (you) conserve water?
How can we (you) conserve water?
List at least three ways….
A person needs (wants) about 1 gallon water/day for hydration
In the US each person uses about 188 gallons/day
An additional 657 gallons/person/day are used for irrigation, industrial use.
List at least three ways….
A person needs (wants) about 1 gallon water/day for hydration
In the US each person uses about 188 gallons/day
An additional 657 gallons/person/day are used for irrigation, industrial use.
Kinds of Water PollutionKinds of Water Pollution
Inorganic Pollutants - petroleum, phosphorus, nitrates, heavy metals, radioactive materials
Organic Pollutants - Pesticides and Herbicides, Materials for common household and industrial use
Biologic Pollutants - invasive species in the water
Inorganic Pollutants - petroleum, phosphorus, nitrates, heavy metals, radioactive materials
Organic Pollutants - Pesticides and Herbicides, Materials for common household and industrial use
Biologic Pollutants - invasive species in the water
Scale of Pesticide Use in US
Scale of Pesticide Use in US
Since 1959: 50-fold increase in pesticide use
Most present pesticides are 10-100 x more toxic than those used in 1050’s
About 25% of pesticide use in US is in houses, gardens, lawns, parks, swimming pools, and golf courses
Average lawn receives 10x more pesticides than equivalent area of cropland
Since 1959: 50-fold increase in pesticide use
Most present pesticides are 10-100 x more toxic than those used in 1050’s
About 25% of pesticide use in US is in houses, gardens, lawns, parks, swimming pools, and golf courses
Average lawn receives 10x more pesticides than equivalent area of cropland
PesticidesPesticides
Each year about 250,000 people are admitted to hospitals and/or emergency rooms with pesticide poisoning
They last and last (persistence)
So why use them??
Each year about 250,000 people are admitted to hospitals and/or emergency rooms with pesticide poisoning
They last and last (persistence)
So why use them??
Balance the good and bad?
Balance the good and bad?
Save human lives (malaria, bubonic plague, typhoid fever)
Increase food supplies (even now 55% of world’s potential food supply is ‘lost’ to other species)
Increase profit for farmers ($1investment è$4 increased profit
Balance good and bad?????? Can it be regulated????
Save human lives (malaria, bubonic plague, typhoid fever)
Increase food supplies (even now 55% of world’s potential food supply is ‘lost’ to other species)
Increase profit for farmers ($1investment è$4 increased profit
Balance good and bad?????? Can it be regulated????
Water QualityWater Quality
Biological - bacteria, micro and macro invertebrates, animal and plant life
Chemical - pH, nitrates, phosphates, DO
Physical- turbidity, solids
Biological - bacteria, micro and macro invertebrates, animal and plant life
Chemical - pH, nitrates, phosphates, DO
Physical- turbidity, solids
Point and Nonpoint Sources of Water Pollution
Point and Nonpoint Sources of Water Pollution
NONPOINT SOURCES
Urban streets
Suburban development
Wastewater treatment plant
Rural homes
Cropland
Factory
Animal feedlot
POINT SOURCES
Ocean pollutionOcean pollution
Dumping Waste Oil spills
Dumping Waste Oil spills
Water TreatmentWater Treatment
New Technologies in Water Treatment
New Technologies in Water Treatment
Solutions to water pollution and shortage
Solutions to water pollution and shortage
• Prevent groundwater contamination
• Greatly reduce nonpoint runoff
• Reuse treated wastewater for irrigation
• Find substitutes for toxic pollutants
• Work with nature to treat sewage
• Practice four R's of resource use (refuse, reduce, recycle, reuse)
• Reduce resource waste
• Reduce air pollution
• Reduce poverty
• Reduce birth rates
• Prevent groundwater contamination
• Greatly reduce nonpoint runoff
• Reuse treated wastewater for irrigation
• Find substitutes for toxic pollutants
• Work with nature to treat sewage
• Practice four R's of resource use (refuse, reduce, recycle, reuse)
• Reduce resource waste
• Reduce air pollution
• Reduce poverty
• Reduce birth rates
Water Environmental Disasters
Water Environmental Disasters
Groundwater Contamination (like in Erin Brockovich’s PG and E, Hinkley)
Oil Spills (Exxon Valdez) Overfishing
Groundwater Contamination (like in Erin Brockovich’s PG and E, Hinkley)
Oil Spills (Exxon Valdez) Overfishing
Groundwater ContaminationGroundwater
Contamination
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Love Canal - 1970’s, PG&E - 1990’s
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Biggest Oil SpillsBiggest Oil Spills
Worst Oil Spills in United States (and these don’t make the top ten in the
world)
Worst Oil Spills in United States (and these don’t make the top ten in the
world) Deepwater Horizon (Gulf Coast 2010,
200,000 gallons a day) Exxon Valdez (Alaska 1989. 10+
gallons)
Deepwater Horizon (Gulf Coast 2010, 200,000 gallons a day)
Exxon Valdez (Alaska 1989. 10+ gallons)
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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QuickTime™ and a decompressor
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