in new delhi, india back 7-9 years ago i was living in a pretty garbage area by my normal standards and one of the things we had to be careful about was when to use the water pump. do it during off time and the water from the tap would be green, it would stink and taste like vomit. that was a really really terrible experience and bad living standards. unless you are poor and cannot afford any other reasonably okay living place, one should not be living in those conditions.