Water Pollution Water pollution is the addition of

Water Pollution Water pollution is the addition of any substance that _______ effects the water and living things Top in 7 the water. The amount of ______ Superfund Sites water depends on the quality of the water. Examples of water pollution include: treated _______, runoff, toxic chemicals, municipal _____, motor oil from cars, _______, detergents, _______, . .

Freshwater Pollutants Kind of Pollutants Examples Sources Disease causing organisms E. coli, Giardia, bacteria Human and animal waste, runoff from farms Pesticides and fertilizers DDT, nitrates, phosphates Agricultural and residential runoff Industrial chemicals PCB’s, Carbon tetrachloride Industrial effluent/ waste Metals Lead, Mercury, Copper Industrial effluent/ waste Petroleum products Oil, Gasoline Road runoff,

Water Pollution • ______ pollution is the number one cause of water pollution in _____ rivers. What would cause sediment runoff? • _______________ • How would sediment harm the water quality? • _________________ • _______ describes any waste material discharged into the environment. When _____ is deposited in water, _____ particles settle to bottom and the concentration of the chemical is diluted by the water. Water naturally ____ itself through the water cycle & filtration through wetland environments. When too much _____ waste that is high in _____ & ________ enter the water, algae can begin to grow uncontrollably due to the “nutrient” matter. ________ occurs when the lake or pond or stream is overtaken by algae. It has a “green scum” covering the surface and chokes out oxygen from entering the water for fish and thus fish kills can occur.

Eutrophication

Water Pollution Point source vs. non-point source POINT SOURCE Pollution from a ____________ such as pipes dumping toxic waste into a river. Controlled by legislation such as the ________ , passed by Congress in 1970. NON POINT SOURCE • Pollution that does _____ come from a single source such as runoff. • The _______ amount of water pollution. • No one claims __________

Point source or Non-point source Point sources _______ treatment facilities ______ pipes _______ Spills _____________________ Non-point sources ___________________________ ___________ Now you decide! Is it point or non-point ?

3 - 2 -1 - Summarize • Write 3 different types of pollutants. • Compare the two sources of pollution (point and nonpoint). • Write one definition water pollution.

A River Runs Through It

Point or Non. Point? ? • Read your scenario. Can you determine if it is a point source or a nonpoint source? • Scenario #1 • Scenario #2 • Scenario #3 • Scenario #4 • Scenario #5 • Scenario #6 • Scenario #7 • What are some potential solutions?

Biomagnification • When ______ enter the environment through ______ or ______ water, they can enter the food chain. • First level producers _____ the chemical, then the first level ______ eat the producer and ________ of the chemical. At each level of the food chain, _______ of the chemical is absorbed and the impact on the organism is ________.