Hiking equipment
According to Tom Brown, the basic plan for survival is in the order of shelter (including clothing), water, fire, and food. Cody Lundin writes about the "Rule of 3s"; this relates to human survival without basics: three minutes without air, three hours without shelter, three days without water, or three weeks without food.
Water supply and sanitation in Ethiopia
It is important for water to be drinkable and usable for daily use. Without any clean water there would more chances at water related diseases. The World Bank also stated that in Ethiopia from 2011-2015 every 64 in 1000 infants pass away before the age of 1. So in Ethiopia there is a 6.4% chance that one's infant would not be able to survive more than one year. Also take in account that these 6.4% infants are mostly born in the rural areas of Ethiopia.