Pipe Repair & Replacement
Trusted Pipe Repair Services in Marin, Sonoma & Napa County
When it comes to your plumbing, even a small leak or crack in a pipe can quickly lead to major headaches, higher water bills, property damage, and even mold growth. Ongaro & Sons has been helping resolve pipe issues since 1932. Whether it’s a minor repair or a full pipe replacement, our licensed plumbers have the tools and experience to handle the job efficiently and with minimal disruption to your home.
We proudly serve all of the North Bay, offering both traditional and trenchless pipe repair solutions. From corroded water lines and burst pipes to hidden slab leaks and sewer line damage, we diagnose the problem quickly and deliver long-lasting results.
Our goal is to provide high-quality, cost-effective repairs that restore the performance of your plumbing system while protecting your property. We understand how important it is to have a plumbing team you can trust. Contact Ongaro & Sons today to schedule your pipe repair service or to request an inspection.
Your home’s plumbing system is a complex network of pipes that delivers fresh water, removes waste, and even fuels your appliances with gas. When a pipe starts leaking, cracking, or corroding, it can lead to serious property damage and health hazards, not to mention higher water or energy bills.
We provide top-quality pipe repair and replacement services throughout Marin, Sonoma, and Napa counties. Our licensed plumbers use state-of-the-art tools to quickly identify issues and deliver efficient, long-lasting solutions.
Pipe Repair Services
General Pipe Repair
Whether it's a leaky copper water line, corroded galvanized pipe, or cracked PVC drain, our team has the training and equipment to make precise repairs with minimal disruption. We’ll inspect the issue thoroughly and restore your plumbing system to safe, reliable operation.
Gas Pipe Repair
Gas leaks are serious and require immediate attention. If you suspect a gas leak or have low gas pressure, we’ll perform a safe, thorough inspection and repair any faulty gas lines. Our team is certified to handle natural gas and propane piping.
Learn More About Gas Pipe Repair
Gas Pipe Replacement
Sometimes repairs aren’t enough, especially if your gas lines are outdated or corroded. We can safely replace damaged or aging gas pipes to ensure the continued performance and safety of your home’s heating and cooking systems.
Learn More About Gas Pipe Replacement
Repiping
If you’re dealing with frequent leaks, low water pressure, or old, rusty pipes, it may be time to consider repiping. Our repiping specialists will assess your plumbing and install durable, modern piping that improves water quality, pressure, and efficiency.
Trenchless Pipe Bursting
Want to replace an old sewer or water line without tearing up your lawn or driveway? Our trenchless pipe bursting method allows us to break apart the old pipe while pulling a new, durable line into place, all with minimal excavation. It’s a fast, clean, cost-effective solution for major pipe problems.

Why Choose Ongaro & Sons for Pipe Repair?
With a legacy of serving the North Bay families and businesses since 1932, we bring decades of trusted local expertise to every job. Our team specializes in minimally invasive, trenchless techniques that protect your property while resolving your plumbing issues efficiently.
You can count on transparent service, clear recommendations, upfront pricing, and no surprises. All of our plumbers are licensed, insured, and dedicated to safety and professionalism. Most importantly, we back every job with a satisfaction guarantee, ensuring long-term reliability and your complete peace of mind.

Schedule Your Pipe Repair Service
Whether you're facing a small leak or a large-scale replacement, Ongaro & Sons is your trusted partner for all pipe repair services in Marin, Sonoma, and Napa counties, from Corte Madera and Kenwood to Two Rock, Cloverdale, Napa, and surrounding cities in the North Bay. Call us now at 415-741-2820 or book your appointment online, we're here to restore the health of your plumbing and the comfort of your home.
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 Marin, Sonoma and Napa County. 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.
Licensed, Insured, Background-Checked
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, with no surprises.
Since 1932
Why Ongaro & Sons for Pipe Repair
The question worth answering is whether you have one failure or a failing system.
Schedule Service →Repair or repipe assessed on evidence
One pinhole in galvanised pipe is rarely the only one. We will tell you when a repair is genuinely a repair and when it is the first of several.
Leak located without opening the whole wall
Acoustic and thermal locating narrow it down before anything is cut.
Material and age taken into account
Galvanised, copper and early plastic all fail differently and on different timescales.
Water quality considered as a cause
Pinhole corrosion has causes worth identifying, otherwise the repair repeats elsewhere.
A view on the whole system, not just the leak
You get told whether this is an isolated failure or the first of several, because that changes whether repairing is the right spend.

Discount
Membership
Ongaro Maintenance Plans
Annual maintenance on your home systems provides safeguards and comfort to you and your family. Members get priority scheduling, discounts, and proactive checkups that catch problems early.
Member Discounts
5% off every repair and replacement, all year long.
Peace of Mind
Proactive checkups catch issues before they become big problems.
Courtesy Reminders
We call you to schedule: never miss a seasonal service.
Value That Lasts
With Ongaro & Sons, you’re investing in quality, integrity, and service that stands the test of time. Explore our current promotions and see the difference real value makes for your HVAC, plumbing, and electrical needs.
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Read MoreFrequently Asked Questions
Can a small leak cause major damage?
Absolutely, over time, even a tiny leak can lead to mold, rot, and structural issues.
Can pipe repair be done without cutting into walls or the floor?
Sometimes. Leaks near fixtures can often be accessed directly. Wall access may be required for hidden leaks, but we minimize damage whenever possible. We may employ a trenchless method for pipe access under floors or your lawn.
Can small leaks be patched, or do pipes need replacing?
Small leaks can be temporarily patched, but long-term fixes often involve replacing sections of pipe.
Do slab leaks require tearing up my floors?
Not always, non-invasive tools like acoustic detectors or infrared imaging can pinpoint leaks and limit demolition.
How can I avoid frozen pipes ?
To prevent frozen pipes during winter, insulate exposed plumbing, keep garage doors closed, and let faucets drip in extreme cold. If a pipe does freeze, turn off the main valve and call a plumber, thawing incorrectly can lead to bursts.
How do plumbers find hidden leaks?
Ongaro & Sons will often employ the use of moisture sensors, infrared cameras, and acoustic devices to pinpoint leaks.
How quickly should a gas leak be repaired?
Immediately, shut off the gas and call a licensed professional. Gas leaks are extremely dangerous and can’t wait.
Is gas pipe replacement dangerous?
Not with licensed professionals. Safety is paramount for Ongaro & Sons, and all work will follow local code and include leak testing.
What causes banging or rattling pipes?
This is often due to “water hammer”, a pressure surge when water flow is suddenly stopped. Loose pipes or worn-out air chambers can also be to blame. Installing a water hammer arrestor or securing loose pipes can usually resolve the issue.
What causes pipe damage?
Corrosion, freezing temperatures, shifting foundations, and high water pressure are common culprits.
When should I replace my plumbing pipes?
If your home is over 50 years old or you're experiencing frequent leaks, discolored water, or low pressure, it may be time to replace aging pipes. Galvanized steel, polybutylene, and even copper piping can wear out over time. A licensed plumber can assess your system and recommend upgrades.