Water-seeking Trees
Conventional wisdom tells us that certain species of trees may be more harmful than others to water and sewage lines if planted too close That is true as far as it goes but all trees have some ability to invade water and sewer lines First tree roots invade mostly through lines that are damaged and in the top 24 inches of soil Sound lines and sewers have very little trouble with root damage and only at weak points where water is seeping out The larger fast growing trees are the biggest problem Avoid planting these trees near your service and watch very carefully these kinds of trees near your service Roots don t actually crush septic tanks and lines but rather enter at weak and seeping spots on tanks and lines Many fast-growing large trees are considered more aggressive toward water service when finding a water source coming from that service Try to avoid planting these large fast-growing aggressive-rooted trees to include Fraxinus ash Liquidambar sweetgum Populus poplar and cottonwood Quercus oak usually lowland varieties Robinia locust Salix willow Tilia basswood Liriodendron tuliptree and Platanus sycamore as well as many Acer species red sugar Norway and silver maples and boxelder
