(Answer): Water is very essential for our survival. we have only one percent fresh water on the earth that can be used for drinking purpose. USA is a developed country where the per capita water consumption is high as compare to the developing and under developed countries due to modern life style. Lets analyze the above mentioned statements. Statement-3: It is True statement This statement is True because the water -saving toilet and other devices have contributed to decline in the residential water usage in the USA over the past few decades. By switching to the high-efficiency Water Sense toilets that uses just 1.28 gallons per flush, we would save 27,000 gallons of water and $230 per year in the USA. In 1995, the National Energy Policy Act has begun requiring plumbing manufacturers to make — and homeowners who were remodeling to buy — toilets that used 1.6 gallons of water per flush or less thus saving water. These are called high-efficiency and Water Sense toilets which played crucial role reducing water usage on toilet flush. Statement -1: It is not true because the Household leaks can waste nearly 1 trillion gallons of water annually nationwide. But in the above mentioned option it is given one million gallons per annum. Therefore, the statement is false. Statement-2: This statement is also not true because the largest use of household water is to flush the toilet, followed by taking showers and baths. The toilets account for nearly 30 percent of an average home’s indoor water consumption annually. Therefore the largest component of daily household water use is flush the toilet while the taking showers comes at second second place. The Statement -4: It is not true as the per capita day water usage (GPCD) in the USA is reducing over last century. The estimates of 2015 put total withdrawals at the lowest level since before 1970, following the same overall trend of decreasing total withdrawals of water observed from 2005 to 2010. The intensity of per capita water use has decreased due to water efficient technologies especially in toilet flush that is the largest component of the household water consumption in the USA.
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