[7] Drinking Water [EH]
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- As early as 460 B.C. ____ writings on public hygiene directed attention to the importance of water in the maintenance of health?
- Hippocrates
- What percentage of water is non-saline?
- 2.5
- What percentage of community water supplies in the United States contain detectable concentrations of one or more contaminants?
- 10
- On average, what amount of water does each person in the United States use?
- 50 Gallons
- About 140 ____ gallons of water are used daily in the United States for irrigation?
- Billion
- On average how many gallons of waste water does a typical person personally use in a day?
- 50
- Primary drinking water standards are known as?
- MCL's
- Average annual precipitation in the United States is how many inches per year?
- 30
- What percent of precipitation is evaporated back into the atmosphere?
- 70
- What percent of the body water loss can be fatal?
- 10-15
- The Safe Drinking Water Act is enforced by?
- ####
- Which of the following would not be regulated with a primary water quality standard?
- Odor
- The largest industrial users of water are listed below except?
- Restaurants
- What percent of precipitation that reaches land soaks in and becomes groundwater?
- 10
- Which of the following is heralded as the most important technological development in the treatment of water?
- Chlorination
- Which of the following diseases is not water borne?
- Anthrax
- In a typical household which device with conservation features uses the most water?
- Clothes washer
- An example of a water-contact disease is?
- Guinea worm
- What was the most important technological development in the treatment of water introduced in 1908?
- Chlorination
- Which of the following industries uses the least amount of water?
- Food processing
- What is the average amount of water consumed daily by each person in the United States?
- 2 quarts
- Since the 1950's industrial use of water has?
- Decreased
- Which of the following would not be a typical water treatment method in California?
- Aeration
- What percentage of the human body is water?
- 50-65
- Hardness of drinking water is related to the incidence of which disease?
- Heart disease
- What is the overall movement of water from precipitation through various pathways on earth and back into the atmosphere called?
- Hydrologic cycle
- Hardness in drinking water is caused by the absence of ____ ?
- Calcium and magnesium
- All of the devices below can improve the quality of drinking water except?
- ####
- Giardia can be effectively removed from the water by?
- Filtration
- Fluoride is added to water in some communities to?
- Improved dental health
- What percent of the human body is composed of water?
- 50-65
- The loss of ____ percent of body water can cause hallucinations?
- 5
- ____ is present in 65 percent or more of the surface waters in the United States?
- Crytopordium
- The U.S. Congress in ____ passed the Safe Drinking Water Act?
- December 1974
- Which location would you find pure water?
- Chemistry lab
- Which of the following could be used as a coagulant?
- Ferric chloride
- Waste disposal uses ____ gallons of water to transport one pound of fecal material to a sewage treatment plant?
- 250
- A loss of five percent of the body's water will result in?
- Hallucinations
- Conjunctivitis is a?
- Water-wash disease
- In California it is estimated that ____ of the residents buy bottled water?
- One-third