In Karachi, there is a well located 20-30ft away from a drain. The water in the well is clean and it has no smell. It is permissible to drink this water, or use it for performing ablution or other purposes?
If there is no apparent traces of impurity in the color, taste or smell of the water of the well in discussion, the fact of which has also been apparent from the question, then its water can be used for drinking, ablution and for other purposes.
And Allah knows best.