Sewer Line Services in Spokane, WA
Dependable Sewer Systems for New Builds, Remodels & Replacements
Whether you're laying the foundation of a new build or replacing aging infrastructure during a remodel, Tri County Plumbing brings the expertise and equipment to get your sewer system done right. We install and replace sewer lines across Spokane and surrounding areas with careful planning, precision trenching, and clean, code-compliant connections—because what’s underground matters just as much as what’s above.
Residential & Commercial
Commercial
Proper sewer line installation is critical for long-term function and code compliance. We handle everything from layout planning and excavation to inspection and final hookups. Whether it’s a new development or a system upgrade, our installations are built to last and designed to perform.
Residential
No small repairs but if you need a whole new sewer line we got you. No one's better than us when it comes to installation, so get a hold of us today and lets get your sewer lines hooked up!
Our Sewer Services Include:
- New sewer line installation for homes and commercial buildings
- Mainline replacement and upgrade
- Sewer tie-ins for remodels and additions
- Site layout and slope planning for gravity flow
- Inspection support and permit coordination
Signs You May Need a Sewer Line Replacement
If you're remodeling an older home or seeing signs of sewer trouble, it may be time for an upgrade. Watch for:
- Slow-draining sinks, tubs, or toilets
- Frequent backups or foul odors
- Soggy ground or lawn indentations
- Foundation settling or cracks
Spotting issues early means fewer headaches later—and a smoother remodel.
Coordinating with Other Trades
Sewer installation is just one piece of a larger puzzle. We work closely with excavation crews, foundation teams, and general contractors to make sure your sewer system integrates seamlessly with other site activities. No surprises. No delays.
Start Your Project with a Reliable Foundation
Let Tri County Plumbing handle your sewer system with the same care and precision we’re known for throughout the Inland Northwest.