Understanding Water Contaminants and Regulations

The video explains the significance of water in the human body, highlighting that it constitutes about 60% of an adult male's body. It emphasizes the importance of access to clean water, free from contaminants, for maintaining health. The Safe Drinking Water Act broadly defines contaminants, which can be physical, chemical, biological, or radiological. The EPA categorizes these contaminants and notes that their presence doesn't always imply a health risk. The video details each category, providing examples like sediment, bacteria, and uranium. It concludes by directing viewers to further resources for more information on environmental health and safety.

What percentage of a typical adult male's body is made up of water?

• 50%

• 60%

• 70%

• 80%

According to the Safe Drinking Water Act, what is considered a contaminant?

• Only radiological substances

• Any substance other than water molecules

• Only biological substances

• Only chemical substances

What does the presence of contaminants in drinking water indicate?

• The water is always harmful

• The water is free of any contaminants

• The water is always safe

• The water may contain small amounts of contaminants

What is the role of the EPA regarding drinking water?

• To ignore contaminants

• To provide categories of contaminants

• To increase contaminants

• To eliminate all contaminants

Which of the following is a category of drinking water contaminants?

• Thermal contaminants

• Nutritional contaminants

• Physical contaminants

• Aesthetic contaminants

What is an example of a physical contaminant in water?

• Bacteria

• Sediment

• Pesticides

• Uranium

Which of the following is a chemical contaminant?

• Viruses

• Protozoa

• Nitrogen

• Parasites

What are biological contaminants also known as?

• Microbes

• Elements

• Compounds

• Radiological substances

Which of the following is a radiological contaminant?

• Salts

• Cesium

• Organic material

• Bleach

What is the main focus of the final section of the video?

• Explaining the Safe Drinking Water Act

• Providing examples of contaminants

• Discussing the importance of water

• Describing the human body's water composition