Sometimes, repairing your sewer line simply isn’t enough. If your pipes are severely corroded, collapsed, or outdated, full replacement may be the most effective—and safest—solution.
A damaged sewer line can lead to persistent leaks, sewage backups, and even hazardous waste exposure. These issues not only pose serious health risks but can also cause costly property damage and environmental harm.
Replacing a failing sewer line helps restore the integrity of your plumbing system, improves efficiency, and significantly reduces the risk of contamination. It’s a proactive step that protects your home, your health, and your peace of mind.
Sewer Line Replacement Services in Northern California
When your sewer line is damaged beyond repair, prompt replacement is essential to protect your home and health. Ongaro & Sons provides expert sewer line replacement services in Marin, Sonoma, and Napa counties, and nearby Northern California communities. We combine over 90 years of plumbing experience with the latest techniques to ensure a smooth, stress-free process from start to finish.

How to Tell if Your Sewer Lines Need Replaced?
Knowing the warning signs can help you avoid bigger plumbing emergencies. You may need sewer line replacement if:
Constant clogs, slow drains, or sewage backups often point to a failing sewer line, especially if repairs no longer provide long-term relief.
Your Comfort, Our Priority
Ongaro & Sons is your trusted heating, cooling, plumbing, electrical, and solar expert—specializing in reliable maintenance and repair services that keep your home running efficiently year-round.
Our certified technicians deliver unmatched expertise with fast, friendly service across Northern California. From HVAC tune-ups to plumbing repairs and electrical upgrades or solar solutions, we focus on energy-efficient performance and long-term comfort. Count on us to maintain the systems that power your home and keep your environment just the way you like it.
PHCC- and NATE-Certified Experts
Our technicians are licensed, experienced, and trained to service all makes and models.
Locally Owned and Operated
Serving the Napa, Marin, and Sonoma communities with personalized, hometown service.
Reliable Repairs
We respond quickly and get the job done right the first time—no surprises.
Our Sewer Line Replacement Process
At Ongaro & Sons, we take every measure to ensure your sewer replacement project is handled with care and precision. Here’s what you can expect:
We begin with a detailed sewer camera inspection to pinpoint the damage and determine the best replacement method.
Trenchless Pipe Bursting
Pipe bursting is an excellent method for replacing damaged and outdated pipes—it doesn't leave a mess! You can avoid digging a trench in your yard, protect your property, and have peace of mind knowing the worksite is much safer and less disruptive to your routine.
Benefits of Trenchless Pipe Bursting
Pipe bursting is beneficial for many reasons, including:
- Results in less damage
- Requires less intensive labor and machinery
- Provides a safer alternative to excavation
- Increases pipe flow capacity
Contact Us for Sewer Line Replacement
Schedule an appointment with our Ongaro & Sons when you need sewer line replacement services. Don’t let a failing sewer line turn into a costly emergency. Trust our plumbers for safe, professional sewer line replacement in Novato, Tiburon, Sebastopol, or any of the neighboring communities in Napa, Marin, and Sonoma counties.
Why Choose Ongaro & Sons?
Serving Northern California since 1932
Licensed, insured, and trusted local professionals
Advanced trenchless technology is available
Clean, courteous, and respectful crews
100% satisfaction guarantee
We are committed to providing the top-quality trenchless solutions you need. Call us at 415-741-2820 or request services online today.
5%
Member Discount

Ongaro Maintenance Plans
Annual maintenance on your home systems provides safeguards and comfort to you and your family. Neglecting your routine checkups can potentially put everyone at risk.
With these annual visits, our experienced technicians use the latest technology to help find unsafe problems before they can become bigger problems.
Maintenance Plan Benefits
Member benefit of 5% discount on repairs and replacements.
Proactive maintenance identifies and addresses issues before they become big problems.
Courtesy reminder calls for scheduled services and appointments.
Special Offers
Enjoy our seasonal promotions and save on your next service.
Limited-time offers—don’t miss out!
Free MacBook Air
With HVAC Upgrade*
$700 Off
Hydro Jet Sewer Cleaning*
FREE
Camera Inspection*
$69
HVAC System Diagnostic*
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Frequently Asked Questions
Yes—permits and inspections are required to ensure code compliance and public safety.



