Fill in the blanks in the following statements using words given in the box.
[air, handpumps, cholera, water, large, ground]
A very __________ number of people defecate in the open. It may cause __________ pollution and soil pollution. Both the surface water and __________ water gets polluted, __________ water is the source for wells, tubewells and __________. Thus, it becomes the most common route for __________ borne disease like __________ dysentery, etc