The sewer system is, second to the drinking water system, the most important part of the public health assets of a city. When it is operating properly, the sewage system is carrying wastewater away from homes and buildings into the wastewater treatment plant and protecting the public health. Also, trees play an essential role in making a city attractive, healthy, and sustainable. Trees provide significant benefits by improving air quality, reducing stormwater runoff, and reducing radiated heat from the streets. However, if tree roots enter into a wastewater pipe they can cause blockages in those pipes, especially if the trees are planted in the wrong place. First of all, this paper will show the damage that can be caused by tree roots. Tree roots can block or reduce flow, cause overflows of sewer content, or damage pipes. This paper will provide several chemical and non-chemical root growing control methods for sewer lines. Also, it will specify some recommendations on how to avoid damage to wastewater pipes caused by roots. Finally, it will provide some recommendations regarding the tree species suitable for planting near wastewater pipes and some trees that should be avoided.