Drain Cleaning:

Tree roots are the most common cause of blocked drains in New York. Especially in the hottest months of summer, trees will be thirsty for water and will be drawn to the condensation that forms on the outside of pipes. These roots will eventually break through and gradually cause a storm water or sewer blockage.
When Glen Head Plumbing and Heating plumbers clear a blocked drain we try to identify for the customer whose trees are most likely to be causing the problem. As a general rule trees and plants should be planted as far away as possible from sewer and storm water drainage lines.
New York Water also publishes a list of known problem tree species on their website and it is worth referring to this if you are about to plant trees. Large amounts of hair can cause clogged or blocked drains and should be prevented from going down your shower.