construction of ferrow cement water tanks

My school has a high population of students due to free primary education. There is need for water to help us clean our facilities and do more projects in the school. Our travelling far to fetch water for the school. Teaches expecting them to come and start classes immediately. To my suprise says teacher Anne, the children have taken long. After finding out  they said they are using the river with animals. They have to wait the animals to drink water and for sometime get the water purified before they draw. We have appealed  an N.G.O to help us.