Customer: I want to have my hair trimmed. Barber: Please sit for some time. C: Actually, I have to go somewhere so, I can't wait. B: You can come back after doing the job. C: No, no that's not possible. That's a bit off. B: You see all the dressers are busy. C: When will you become free? B: It won't take more than ten, fifteen minutes. I have to do one more shave and that's all. C: In that case, I will wait. B: Thanks, you can read the newspaper to kill the time. C: O.K., O.K., I will manage somehow. B: (To another customer) come on, it is your turn. C: Yes, I am................. B: (After some half an hour) I am sorry, I took more time. C: I knew, it happens. B: Please, raise yourself a bit. C: O.K., but please make me free soon. B: No matter what happens! C: (Laughing I mean, quick but right. B: How much trimming do you want? C: Better you decide neither that long, nor that short. B: It's our duty to ask because everyone has his own choice. C: Yes, I do understand. B: (After fifteen minutes) you can check in the mirror. C: Everything is O.K., just let me leave and how much? B: Forty rupees. C: I thought it would be something like thirty. B: Whatever you like. C: No, I was just saying.
Answer: The author might be suggesting that the bacteria and diseases from the cesspool are leaking into their water source and into the shared water pump water, spreading the disease.