Expert Sewer Line Repair & Replacement Services in Sunnyvale
CPI Service provides trusted and certified sewer line repair and replacement Services in Sunnyvale, CA, delivering expert diagnostics, efficient solutions, and licensed workmanship for both residential and commercial sewer systems. With over 35 years of experience serving the local Sunnyvale area, our technicians specialize in resolving complex sewer line issues using both traditional and trenchless repair techniques. Whether you are responding to an urgent sewer backup or proactively replacing aging pipelines, we ensure the process is fast, compliant, and built to last.
As a family-owned local business, CPI Service combines community trust with professional-grade service. Our certified plumbers use advanced tools such as HD sewer cameras for internal inspections and hydro-jetting units for thorough line cleaning. We diagnose issues like tree root intrusion, pipe corrosion, or misalignment, then implement precise repairs or full replacements. All work complies with Sunnyvale’s plumbing codes, and we manage permit approval to ensure your project moves forward without delays.
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Coupon Deal and Discount (Complete form) | Transparent Pricing | Quality Workmanship
Sunnyvale Sewer Repair Services We Offer
Traditional Sewer Line Replacement
Trenchless Sewer Line Replacement Sunnyvale
Emergency Sewer Line Repairs
Sewer Line Cleaning & Maintenance
Why is CPI Service Sunnyvale’s Trusted Name in Sewer Solutions?

Licensed & Insured Sewer Contractors
CPI Service employs fully licensed and insured plumbers to ensure every sewer project in Sunnyvale complies with California regulations and safety standards.

Trenchless Technology Experts
Our team specializes in trenchless sewer repair and replacement methods, offering Sunnyvale homeowners a modern, low-disruption alternative to traditional excavation

Upfront Transparent Pricing
CPI Service believes that clear pricing builds trust. Before starting any sewer work in Sunnyvale, we provide a written, itemized estimate that includes excavation or trenchless access setup

Fast, Same-Day Services
We understand that sewer problems cannot wait. That’s why CPI Service offers same-day service options across Sunnyvale, especially for urgent issues like backups or line breaks.

Customer Satisfaction Guarantee
Every sewer repair or replacement completed by CPI Service is backed by our satisfaction guarantee. We follow up after each job to ensure proper function and

Family-Owned & Operated Local Business
As a family-run business rooted in Sunnyvale, CPI Service brings a personal commitment and deep local knowledge to every sewer line repair and replacement project
When Should You Repair or Replace Your Sewer Line?
You should consider repairing or replacing your sewer line when you notice signs of recurring blockages, sewage odors, or visible ground changes near your home. CPI Service helps Sunnyvale homeowners identify the right solution through thorough inspections using advanced video diagnostics. In older areas like Serra or Lakewood, where aging clay or cast-iron pipes are common, full replacement may be necessary to prevent long-term issues.
Several clear indicators suggest it is time to schedule a professional evaluation:
- Multiple slow-draining fixtures in the house
- Persistent sewage odors from drains or the yard
- Frequent backups despite routine cleaning
- Visible wet spots or indentations in the lawn
- Unusual gurgling sounds from drains or toilets
- Tree roots found near or inside sewer lines
If these symptoms are left unaddressed, the damage can worsen quickly. CPI Service evaluates each situation to determine whether targeted repairs will suffice or if a full replacement is the more dependable and cost-effective option for your Sunnyvale property.
How to Prevent Sewer Line Breaks and Costly Repairs?
You can prevent most sewer line breaks and costly repairs by following consistent maintenance routines and making smart usage choices. CPI Service works with Sunnyvale homeowners to implement these strategies through scheduled cleanings, inspections, and system evaluations. Preventative care is especially important in older neighborhoods like Cherry Chase and the Heritage District, where aging pipes and invasive tree roots create higher risks.
Here are key practices that help reduce the likelihood of sewer damage:
- Avoid flushing grease, wipes, or hygiene products that clog or harden inside pipes
- Schedule professional sewer cleaning every 12 to 18 months to maintain flow
- Manage nearby vegetation by trimming or removing root-heavy trees
- Watch for slow drains and unusual odors, addressing them early
- Install strainers and grease traps to prevent buildup inside the line
- Arrange for video inspections in homes over 40 years old to catch hidden issues
When these steps are followed consistently, sewer systems last longer and experience fewer disruptions. CPI Service provides Sunnyvale homeowners with tailored maintenance solutions that reduce emergencies and help avoid expensive repairs down the line.
What Sunnyvale Customers Say About Our Sewer Services?
Homeowners across San Jose trust CPI Service for dependable tankless water heater installation, repair, and maintenance, and their reviews say it all. From timely service to professional workmanship, our customers consistently highlight the value we bring to every project.

Had the plumber Daniel come to my condo today for a clogged toilet. He spent almost two hours snaking with a camera my drain and pulled out a huge clog of tree roots. He knew exactly what he was doing and did a wonderful job. I would recommend this company very much.
Ron K.

Great, reliable, and timely service at a reasonable price. I shopped around quite a bit before landing on CPI. Their rates were competitive, they responded promptly, and their plumber fixed a few issues quickly and without much fuss. I’ll definitely be calling them again the next time we have issues!
Allan Huynh

CPI Service was sent to my home by my condominium association. They agreed to a very early morning appointment and the gentleman arrived exactly on time. He went through the problem very methodically to see where the problem was. Something that no one else could figure out was taken care of in half an hour. I would very definitely recommend them.
Fern F.
Affordable Sewer Line Options
Coupon Deals & Other Discounts
Financing Options for Larger Projects
First-Time Customer Discounts
New customers in Sunnyvale can receive 5% off on any sewer line service during their first appointment with CPI Service. This includes inspections, emergency repairs, and full replacements. Whether you are calling for a camera diagnostic or a full trenchless install, the discount applies to your total service cost. It’s our way of welcoming new customers and providing affordable access to professional sewer solutions from the start.
Meet Our Certified Technicians











Your Go-To Sunnyvale Sewer Line Experts
About CPI Service – Sunnyvale’s Sewer Line Specialists
How Our Sewer Replacement Process Works in Sunnyvale?
Initial Call & Appointment Scheduling
On-Site Sewer Line Inspection
Our technician arrives at your Sunnyvale property to assess the layout, identify access points, and evaluate any visible signs of damage. We tailor the inspection based on neighborhood construction patterns and property spacing..
Video Camera Diagnostic & Damage Analysis
Using high-resolution sewer cameras, we inspect the line from within to pinpoint clogs, intrusions, or structural failure. This method is especially useful for older homes in the Heritage District or homes with clay pipes.
Clear Quote and Work Scope Approval
We provide a detailed quote that includes labor, pipe materials, permits from the City of Sunnyvale, and restoration if needed. Work only begins after full customer approval..
Sewer Line Repair or Replacement
Based on the assessment, we perform traditional or trenchless replacement. For properties with limited yard space, like those in North Sunnyvale, trenchless methods are often preferred to minimize disruption.
Quality Assurance & Clean-Up
After completing the installation, we run post-repair tests to verify proper system function. The area is cleaned and restored, whether it’s a driveway in Fairbrae or a lawn in Ponderosa Park.
Support and Maintenance Tips
We provide Sunnyvale homeowners with tailored care tips, including when to schedule hydro-jetting, how to prevent root intrusion, and signs to watch for in local soil types.
Same Day Service
1-Hour Response Available
We Guarantee Our Work
Free Plumbing Safety Check
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Book Your Sunnyvale Sewer Line Replacement Now
If your sewer line is showing signs of damage or nearing the end of its lifespan, now is the time to schedule professional service. CPI Service makes it easy for Sunnyvale homeowners to book expert sewer line repair or replacement through a quick call or online form. Our team provides prompt scheduling, transparent quotes, and manages city permits and inspections from start to finish.
Call (408) 549-8181 or visit our website to book your appointment today. We will connect you with a licensed technician who understands your neighborhood, property layout, and sewer infrastructure needs.
Sewer Line FAQs for Sunnyvale

How do you know if a sewer line needs to be replaced?
You likely need a sewer line replacement if you are experiencing repeated backups, slow drains in multiple fixtures, or foul odors. Soggy or sunken areas in your yard may also indicate a broken line. CPI Service confirms the cause through a video camera inspection.
How long does it take to replace the main sewer line?
Most sewer line replacements take 1 to 2 days if using trenchless methods. Traditional excavation may take 3 to 5 days, depending on pipe length, depth, and conditions on your Sunnyvale property.
How much does a new sewer line cost?
New sewer line installation typically costs between $50 to $250 per foot, depending on the method used and site conditions. In Sunnyvale, a 50-foot trenchless replacement might range from $2,500 to $12,500, while a traditional dig-and-replace job could exceed that due to excavation and restoration costs. CPI Service provides detailed, itemized quotes to help you plan your project with confidence.
How often should sewer lines be replaced?
Sewer lines should be replaced every 50 to 100 years, depending on the material and wear. If your home has clay or cast-iron pipes installed before 1980, it may be time to consider a full replacement.