![]() ![]() Sanitary main blockages ‒ A blockage can occur in a city sanitary main.When the issue is a result of a combination of city and private trees, the costs are sometimes split between the city and the property owner. The cost of the clean-up will fall to the problem tree's owner. Tree roots ‒ Seeking moisture, small roots of trees and shrubs make their way into sewer line cracks and service pipe joints, and can cause extensive damage or blockages as they grow larger.During many rain storms, the systems are exposed to more volume than they can handle, and the result is a sewage backup situation that allows sewage to spew out into basements and other low lying drains. Combined pipelines ‒ Problems arise in systems that combine storm water and raw sewage into the same pipeline.The increase in the number of homes connected to already aging sewage systems has also contributed to rapid increases in sanitary sewer backups, flooded basements and overflows. Aging sewer systems ‒ The American Society of Civil Engineers indicates that the nation's 500,000-plus miles of sewer lines are on average over thirty years old.There are a number of causes of sewer backups-here are some of the most common. ![]() While most basement water problems are not caused by sewer backups, the Civil Engineering Research Foundation reports that the number of backed up sewers is increasing at an alarming rate of about 3 percent annually. ![]()
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