Question
I just purchased a new home and there is a weeping willow that is about 3 feet tall in the center of the back yard.  My lot is 170 feet long by 80 feet wide.  It is about 75 feet from the back of my house.  I am told the water and sewer lines are on the side on the front half of the house so I am guessing close to 100 feet away at a minimum.  However, in my neighbors back yard there is some type of drain and water channels down between the back yards of the houses behind my property and runs into his drain around another 100 feet away.  There is a lot of standing water during heavy rains in the back part of the yards in the neighborhood.  I have been told there wouldn't be any issues, and I do LOVE the way the weeping willow looks, but everything I have read online says they are not good to have in urban/residential neighborhoods.  Any advice would be appreciated!  Thanks.

Answer
Not a problem. Willows have a tendency to clog septic lines due to their roots needing more  water then most trees and the lines are a source of water. BUT the distance you said is far enough away that they are not a problem. (usually 30-40 feet is the distance that is recommended to keep away from septic lines). Where it is I would just enjoy the tree. Willows do want more water than most trees so the water drainage more than likely suits the willow. Sounds like the tree is happy so leave it be and enjoy.