Although both lines are essential to your plumbing system, they serve different purposes.

Your water mainline connects your home to the public water supply. A leak or damaged section can lead to reduced water pressure, unexplained water use, or wet areas around your property.

Your sewer mainline carries wastewater from your home to the public sewer system or a private septic system. A blockage or damaged pipe can cause slow drains, unpleasant odors, and wastewater backups.

Because these pipes are usually buried underground, problems aren’t always easy to spot. A professional evaluation can help identify the source before you decide on the next step.

What Causes Mainline Problems?

A mainline repair addresses a specific problem, such as a leak or an isolated section of damaged pipe. Repair may be suitable when the rest of the line is in serviceable condition.

A mainline replacement involves replacing a section or the full length of the line. Replacement may make more sense when damage is widespread, the pipe is deteriorating, or problems keep returning.

The right choice depends on more than the immediate symptom. A thorough evaluation should consider the overall condition of the line, its history of problems, and the long-term needs of your property.