How Snohomish County’s Plumbing Codes Impact Sewer Line Replacements

Maintaining a functional sewer system is an important aspect of home ownership. While sewer lines are made to last for decades, they eventually wear down and require replacement. Like any other area in the United States, Snohomish County has its own set of plumbing codes that govern how plumbing-related work is carried out. Sewer Solutions NW is here to share how these regulations cross over with sewer line replacement projects.

Permit Requirements for Sewer Line Work

In Snohomish County, WA, any work performed on water supply or drainage systems warrants a plumbing permit. This encompasses sewer pipe line repair and replacement. The county's code actually allows property owners to do their own work, but only if they apply for and obtain a Residential Plumbing Permit and adhere to the Uniform Plumbing Code (UPC).

In our experience, we can attest that sewer line replacements are complex tasks best left to licensed professionals. This is especially prudent given the potential hazards involved in working with sewage and underground pipes. If you need to replace sewer line, our team at Sewer Solutions NW can make sure the job is always done safely and meets quality standards.

Approved Materials and Slope Requirement

For drainage, waste, and vent systems, the county permits the use of cast iron, galvanized steel, copper (DWV), or plastic materials such as ABS or PVC. PVC is commonly favored due to its lightweight nature and ease of installation. However, it would still depend on the individual property and its specific sewer line repair needs.

In terms of slope requirements, the Snohomish County plumbing code specifies that sanitary drainage pipes need to have a minimum slope of 1/4" per foot. This ensures proper flow and prevents clogs or backups in the system.

Sewer Line Replacement Methods

Both the UPC and Snohomish County's plumbing codes allow for several methods of sewer line replacement. These include the traditional open-trench excavation and trenchless pipe bursting.

Traditional excavation involves digging a trench along the length of the sewer line to access and replace it. Pipe bursting uses a hydraulic machine to break apart the old pipe while simultaneously pulling in a new one behind it. This technique is popular for its minimal impact on surrounding environments and long-term durability and sustainability.

Of course, a thorough inspection and evaluation of the sewer line is necessary to determine which option is most appropriate. If trenchless solutions are feasible, our Sewer Solutions NW technicians will recommend them to help reduce labor and restoration costs for our clients.

Work With Our Skilled Team

Sewer Solutions NW is a proud provider of quality sewer repair services in Snohomish County, WA. For work that delivers reliable results and protects your peace of mind, we are the name to trust. Call us today to learn more!