Most of us don’t have to spend a lot of time thinking about what happens after we flush our toilets; the 730,887 Americans who work for the 104,852 plumbing and sewage companies across our nation do that thinking for us. Unfortunately, sewer-related issues can cost American households hundreds if not thousands of dollars if left unchecked due to leaks. Here are some ways to make sure your lines are clear and functional. The Sources of Sewer Problems Up until the 1980s, sewer lines consisted of clay piping that was durable, but corrosive over time. These pipes have a typical lifespan…