As tree roots grow, they can infiltrate residential pipes, causing clogs, backups and damage to your sewer system. Although PVC sewer lines are more resistant to root infiltration than clay tile or concrete pipes, they are not impenetrable. Remove trees and avoid planting new ones near your sewer system to prevent roots from growing into the lines. It is difficult to keep the trees and control their root growth. Cutting the roots is a form of pruning and encourages them to grow faster and stronger than before. Copper sulfate crystals introduced into the soil above the sewer lines kill existing tree roots and repel new growth.
Instructions
- 1
Contact your local sewer district or hire a plumber to plot the location and depth of the sewer lines.
2Call the national before-you-dig number, 811. They will provide you with information about the surrounding underground utilities so you avoid cutting into them.
3Drill a hole with a hand-operated auger. The hole should end 18 inches above the sewer pipe.
4Insert a length of 1-1/2 inch PVC pipe into the hole and make a mark with the hacksaw at ground level. Remove the pipe from the ground.
5Cut the pipe, an inch below the mark, with the hacksaw.
6Screw a threaded female adapter with a plug onto the pipe.
7Push and twist the open end of the pipe into the hole until you reach the bottom. Keep the cap flush with the ground so you can mow and walk safely over the area.
8Repeat Steps 3 through 7 to continue building entry points every 6 feet along the sewer line.
9Remove the plugs on the tops of the pipes.
10Pour copper sulfate crystals into each pipe. Follow the manufacturer's directions for the correct amount to use.
11Fill the pipes with hot water. The water dissolves the crystals to seep into the ground.
12Replace all of the plugs on the pipes.
13Refill the pipes with copper sulfate crystals and hot water every four months
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