Water quality objectives are set to protect human health, aquatic life, and the aesthetic quality of water.

Temperature is not a common water quality objective parameter because it is not a pollutant. However, it can be an important factor in determining the health of aquatic life.

The maximum allowable concentration of dissolved oxygen in water for the protection of aquatic life is 5 mg/L.

The maximum allowable pH range for water is 6.5 to 8.5.

The maximum allowable turbidity level for water is 5 NTU.

Natural sources are not a common source of water pollution because they do not typically contain harmful pollutants.

All of the above methods are effective in reducing water pollution.

Drinking contaminated water can cause a variety of health problems, including gastrointestinal illness, skin infections, and respiratory problems.

Water pollution can cause a variety of environmental problems, including fish kills, habitat destruction, and algal blooms.

The Clean Water Act is a federal law that regulates water pollution in the United States.

The main goals of the Clean Water Act are to restore and maintain the chemical, physical, and biological integrity of the nation's waters, to eliminate the discharge of pollutants into navigable waters, and to achieve water quality standards that protect human health and aquatic life.

The main provisions of the Clean Water Act are the National Pollutant Discharge Elimination System (NPDES), the Total Maximum Daily Load (TMDL) program, and the Water Quality Standards program.

The National Pollutant Discharge Elimination System (NPDES) is a permit program that regulates the discharge of pollutants into navigable waters.

The Total Maximum Daily Load (TMDL) program is a program that establishes the maximum amount of a pollutant that can be discharged into a waterbody.

The Water Quality Standards program is a program that sets water quality standards for the nation's waters.