5 Questions to Ask About Your Sewer Main

Keep it clean—maintain your sewer pipes to avoid yucky smells

A person unclogging a main sewer line
Photo: nicolamargaret / E+ / Getty Images
A person unclogging a main sewer line
Photo: nicolamargaret / E+ / Getty Images
Get quotes from up to 3 pros!
Enter a zip below and get matched to top-rated pros near you.
Geo Icon

How often do you think about your sewer? Probably not too often—unless you have a smelly problem. In that case, you’re going to be thinking about your sewer main nonstop. When talking to a plumber or sewer cleaning pro, get ready to answer these questions to help you get back on track.

1. What problems are you noticing?

Sewer main problems can take many forms. You may notice an unpleasant odor coming from your sink drains, or the drains may take forever to clear. When you flush the toilet, it may gurgle and water may back up into the bowl. Let the professional know about any plumbing irregularities you're seeing.

2. Where is your sewer located?

A plumber or sewer cleaning pro needs to know the location of your sewer main before they can clean it out. One way to find your sewer is to look at the plans and blueprints for your home. Another option is to call 811 and have someone come out and mark the location of the sewer and other utility lines in your yard. 

You can also look in your yard to see if you can see the sewer cleanout, which is usually a white PVC pipe that sticks out of the ground. The pipe provides easy access to your sewer main for cleanouts and inspections.

3. When was the last time you had your sewer main serviced?

Ideally, your home's sewer main should be cleaned every 18 months. If it's been a bit longer, let the plumber know, as that may affect the project's length and complexity. Also let the pro know about past sewer problems you may have had, such as tree roots invading the pipes.

4. How long will the project take?

Talk to the sewer cleanout professional about the expected duration of the project and when you'd like the work performed. Usually, sewer clearing can take anywhere from under one hour to several hours, depending on the severity of the clog and how tricky it is for the plumber to access your sewer line. 

Ask your professional about the estimated project start date, too. You should have your sewer cleared sooner rather than later, even in a non-emergency situation. 

5. How can you protect my sewer main?

Regular cleanouts are part of sewer maintenance. A plumber or cleanout pro may recommend paying close attention to what gets poured down the drains. Dumping cooking oil or other grease down your kitchen sink is usually a big no-no and can clog the lines. 

If you have trees and shrubs in your yard, pay attention to their roots. Next time you have a landscaping pro or an arborist come out to your property, ask them to inspect these plants. These experts may offer solutions to keep the root systems under control.

Need professional help with your project?
Get quotes from top-rated pros.
The homeowners guide to septic tank services
From average costs to expert advice, get all the answers you need to get your job done.
A house with a large garden with lawn
Mar 4, 2025
Mar 4, 2025
A damaged septic system can leak odors and sewage, so repairs are urgent. Find out how much septic tank repair costs based on repair type, tank size, and more.
Family and friends enjoying their dinner in the backyard
Mar 10, 2025
Mar 10, 2025
Replacing a drain field requires digging up quite a bit of land and involves a decent amount of testing. Using this guide, you’ll learn how much it costs to replace a drain field based on a few key factors such as size and type of septic system.
toilet in white marble bathroom
Mar 7, 2025
Mar 7, 2025
A small septic tank system is ideal for spaces with minimal needs, such as a one-to-two-bedroom apartment or guest house. A small septic tank contains 750 or 1,000 gallons. We’ll cover everything that factors into your small septic system cost here.
A row of single family houses
May 16, 2024
May 16, 2024
Got a home construction project coming up? Here’s how to find your sewer line from house to street so you can avoid catastrophe.
Friends having a garden party
Mar 15, 2025
Mar 15, 2025
What is a drain field? Understanding this key element of home septic systems will help you detect issues and prevent damage before it’s too late.
Septic system tank installed in the yard
Feb 27, 2025
Feb 27, 2025
Slow drains, gurgling, and foul smells are signs your septic tank may need to be emptied. Here are questions for your septic system pro on how to maintain it.