Home Improvement

Why Do I Have 2 Sewer Cleanouts?


Unraveling the Mystery: Why Do I Have Two Sewer Cleanouts?


Have you ever wondered why your property has not one but two sewer cleanouts? The presence of dual sewer cleanouts might seem puzzling, but it serves a practical purpose in maintaining your home’s plumbing system. In this article, we will unravel the mystery behind having two sewer cleanouts and shed light on their significance in ensuring a smooth and efficient plumbing setup. Join us as we explore the reasons for having two sewer cleanouts and how they contribute to a well-functioning plumbing infrastructure.

1. The Role of Sewer Cleanouts:

Sewer cleanouts are essential components of a property’s plumbing system. These access points are strategically placed within the sewer line to facilitate easy maintenance, inspection, and unclogging. They play a crucial role in preventing sewer backups and ensuring wastewater flows freely to the municipal sewer system.

2. Understanding the Main Cleanout:

One of the sewer cleanouts in your property is known as the main cleanout. This access point provides direct entry to the primary sewer line that connects your home’s plumbing system to the municipal sewer system. Typically, the main cleanout is larger in size and is often located outside the house near the foundation or at an accessible point.

3. The Significance of Lateral Cleanouts:

Apart from the main cleanout, the presence of a second cleanout indicates the existence of lateral lines in your plumbing system. Lateral cleanouts are smaller access points that connect to specific areas or fixtures within your property. For instance, there might be a lateral cleanout dedicated to the kitchen drain or the bathroom drain. These lateral lines help optimize maintenance by providing targeted access to particular sections of the plumbing system.

4. The Benefits of Dual Sewer Cleanouts:

Having two sewer cleanouts offers several advantages. Firstly, it allows for focused maintenance and troubleshooting of individual sections without disrupting the entire plumbing system. This targeted approach can save time and effort when dealing with blockages or issues. Secondly, if one section experiences a problem, the other cleanout ensures that other areas of the plumbing system can still function correctly.

5. Maintaining Your Sewer Cleanouts:

Regular maintenance of your sewer cleanouts is crucial to keep your plumbing system in top shape. Ensure that the cleanout caps are secure to prevent debris and dirt from entering the lines. Periodic inspections by a professional plumber can help identify potential issues early on and prevent costly repairs.

6. Seek Professional Assistance:

If you encounter any issues with your sewer cleanouts or plumbing system, it’s best to seek the expertise of a licensed plumber. A professional inspection can help identify any hidden problems and ensure the optimal functionality of your plumbing system.


The presence of two sewer cleanouts might appear mysterious at first, but it’s a well-thought-out feature in modern plumbing systems. The main cleanout connects your property to the primary sewer line, while the lateral cleanouts offer targeted access to specific sections. Understanding the distinction between the two cleanouts empowers homeowners to take better care of their plumbing infrastructure. Regular maintenance and timely inspections by professionals will ensure a seamless flow of wastewater and a well-maintained plumbing system.

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