وَبَيْنَهُ وَبَيْنَ الْمِصْرِ نَحْوُ الْمِيلِ أَوْ أَكْثَرُ
Meaning: The distance between the person and the town is approximately a mile or more.
The expression denotes an approximate legal measure for distance and the burden of returning for water, not a license to ignore nearby usable water.