WATER POLLUTION

Water PollutionCAUSES1. Industrialization2. Rapid human

population growth

Water Pollution Pollution discharged from a single source is

called POINT SOURCE POLLUTIONFactory dumpingOil spillHot water

Water Pollution Pollution discharged from many sources is

called NON-POINT SOURCE POLLUTIONDumping into the water (cruise ships, cargo ships)Dumping chemicals down the drain

Non-point Source Pollution Farms: herbicides, pesticides, fertilizers, feces Chemicals added to roads Oil and gasoline

1. Thermal Pollution Pollution caused by the heating of a body of

water affecting the organisms that live there

Salton Sea Inland saline sea

in California

2. Groundwater Pollution Pollution caused

by chemicals seeping into the groundwater supply

○ Pesticides○ Herbicides○ Fertilizers

Love Canal, Niagara 1900’s 1950’s

Asthma, miscarriages, mental retardation

1970’s56% of the children in the

area were born with birth defects

1980’s

3. Ocean pollution Pollutants being dumped

into the ocean Oil spills Cruise ship garbage

Bikini Atoll 1946 to 1958 Hydrogen bomb test site

Effects of Pollution

1. Biomagnification The accumulation of pollutants in a food web

Pollutant levels increase as you go up the food chain

2. Artificial Eutrophication In imbalance of nutrients in an

aquatic ecosystem Causes overgrowth of algae

3. Diseases Caused by water borne bacteria

CholeraTyphoidSchistosomiasis

4 million children die each year from diarrhea caused by contaminated water

4. Clean Up Costs Takes a lot of money, time and resources to

clean up water pollution

Clean up Costs Exxon Valdez

$2 billion in clean up$1 billion in legal fees

Deepwater Horizon$20 billion

Deepwater Horizon Oil Spill 8,332 species

1,200 fish200 birds1,400 mollusks1,500 crustaceans4 sea turtles29 marine mammals

6,814 dead animals have been collected6,104 birds609 sea turtles100 dolphins and other

mammals1 reptile

5. Acid Rain Acidic material deposited

when it rains Erodes buildings, and

harms vegetation

What can we do??1. Educate People

2. Enforce pollution regulations

3. Recycling materials

4. Pack it in-Pack it out