Even the most durable water line comes to the end of its lifespan at some point. Main water line replacement is recommended when you’re dealing with issues such as pipe corrosion, an undersized water line, unsafe materials, and frequent leaks. Installing a new water line improves water quality, reduces the likelihood of frequent issues, and saves you money. But how long does it take to replace a failing water line?
This is a common question plumbers get from homeowners who are considering water line replacement. Here at Mr. Rooter Plumbing, we’ve installed and repaired water lines for decades. We know what goes into the entire process and the expected timeline for completing the project.
Initial Inspection and Diagnosis (1–2 Hours)
The first step is to identify the issue and determine whether a replacement is necessary. A licensed plumbing repair service will inspect your water line using tools such as video inspection cameras or leak detection devices. This helps locate breaks, leaks, or areas of deterioration. In many cases, a visual inspection and a pressure test are enough to assess the line’s condition.
This step typically takes a few hours and helps your plumber decide whether a spot repair or complete line replacement is the best solution.
Planning and Permits (1–2 Days)
Once replacement is confirmed, your plumber will plan the project, determine the route for the new line, and obtain any necessary permits. Many cities and municipalities require permits for underground water line work to ensure everything complies with local codes.
If your plumbing company handles permitting (as Mr. Rooter Plumbing does), this process usually takes a day or two, depending on your local regulations.
Excavation or Trenchless Preparation (4–8 Hours)
The next step is preparing the site. For traditional methods, plumbers in Columbia, SC will dig a trench along the path of the existing line to access and replace it. This is more labor-intensive and can take several hours.
For homes that qualify for trenchless water line replacement, the process is much faster and less invasive. Trenchless methods only require small access points at each end of the line, minimizing damage to your yard or driveway. Depending on soil conditions and line length, this phase typically takes half a day.
Installing the New Water Line (4–6 Hours)
Once the old line is exposed or access points are prepared, the plumber installs the new pipe. The duration depends on the material, the length of the run, and any obstacles such as tree roots or existing utilities. Most installations can be completed within the same day. At this stage, your plumbing repair service will pressure-test the new line to ensure there are no leaks and that it meets performance standards.
Backfilling and Cleanup (2–4 Hours)
After the new water line is installed and tested, the area is carefully backfilled and cleaned up. If trenchless technology is used, minimal restoration is needed. For traditional excavation, your plumber will fill in the trench and restore the area as closely as possible to its original condition.
Total Time: Typically, 1–2 Days
In most residential cases, a water line replacement takes one to two days. However, larger properties, complex installations, or difficult soil conditions may extend the timeline slightly. The good news is that professional plumbers like Mr. Rooter Plumbing work with speed to get your water flowing again.
Mr. Rooter Plumbing Is the Company to Call When You Need Main Water Line Replacement
If you’re considering installing a new water line in your home or business, get in touch with the team at Mr. Rooter Plumbing. For over 50 years, we’ve helped homeowners and businesses keep their water lines in great condition. Our plumbers have years of experience under their belts and are well equipped to get the job done within the shortest time possible without compromising on quality. Contact us today to request water line replacement service.
