As of 2013 pit latrines are used by an estimated ____________ people.(a) 1.77 billion(b) 2.77 million(c) 1.77 billion(d) 4.66 billionThis question was posed to me in final exam.My doubt stems from Design of Septic Tanks topic in section Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing

As of 2013 pit latrines are used by an estimated ____________ people.(

1.	As of 2013 pit latrines are used by an estimated ____________ people.(a) 1.77 billion(b) 2.77 million(c) 1.77 billion(d) 4.66 billionThis question was posed to me in final exam.My doubt stems from Design of Septic Tanks topic in section Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing
Answer» Correct OPTION is (c) 1.77 BILLION The explanation: This is mostly in the developing world as well as in rural and wilderness areas. In 2011 about 2.5 billion people did not have access to a proper toilet and one billion resort to open defecation in their surroundings. Southern Asia and Sub-Saharan AFRICA have the poorest access to toilets. In developing countries the cost of a simple pit toilet is typically between 25 and 60 USD. Ongoing maintenance costs are between 1.5 and 4 USD per PERSON per year which are often not taken into consideration.

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