Here are a few symptoms that should be watched out for to detect a possible problem in the sewer lines.
• If you have too many trees near your sewer line then this could be doing the trick. The roots of the trees often get into the sewer lines, attracted by the water that passes through it. The roots continue to grow, often chocking or breaking the pipe.
• Besides this, a blocked sewer line would lead to raw sewer backing up into your drain, toilet or bathtub. A gurgling sound will be heard from the pipes. There will be a pool of water around the floor drain in the basement. You may see back up of water in the shower drain when the running washing machine. You will face multiple clogging problems in your drains. The drains will get slower. There will be odor of sewer in the bathrooms.
As a preventive measure never throw things in your toilets or bathroom drains that can block sewer line. These many include baby wipes, diapers, tampons, condoms, hairpins, hair, etc. Do not throw cooking grease and oil into it. Grease is the worst enemy of sewer lines. They tend to solidify. Do not plant trees near the sewer line. Only plant slowing growing shrubs with small root balls.
• The type of problem generally decides the kind of cleaning that should be undertaken. If the problem is caused by tree roots then a mechanical auger is sufficient. It has a spiral head with sharp teeth that will cut through the roots and remove the blockage. But the roots will regrow soon. So you have to do a chemical treatment to stop the growth for good. Another option is to pull out the invasive root.
If there is no serious issue in the sewer line, then professional cleaning of it would cost less than $150. However, high-pressure water jet cleaning can go up to $200.
Disclaimer: Although rate quoted in the page are typical average rates that can be seen across USA, they can vary in certain areas depending upon city and the variables associated with each individual project.