Sump Pump Repair & Installation
Sump Pump Services in Marin, Sonoma & Napa County
While basements are uncommon in the North Bay, sump pumps are not, they are invaluable to keeping excess water out of many homes.
High water tables and the risk of flooding during our rainy season make them a common plumbing product for many residential properties in Marin, Napa, and Sonoma counties, and all the surrounding areas.
External factors are not the only concern; homes are also susceptible to flooding caused by plumbing issues. A burst pipe or a faulty faucet can release a large amount of water into a house. If the automatic shut-off valve isn’t engaged promptly, substantial water damage can occur to a home and its contents.
Sump pumps offer a solution by automatically activating when water enters the sump pit, continuing to operate as long as there is water to be removed. By eliminating excess water, sump pumps control humidity and prevent the growth of mold, mildew, and wood rot, which can cause significant damage to homes.
Affordable Sump Pump Services in Marin, Sonoma & Napa County
Ongaro & Sons has spent nearly a century in the industry serving the North Bay. Our experience exemplifies how much we understand a sump pump’s critical role in safeguarding a home against flooding and water damage.
Our team of certified and experienced plumbers is dedicated to providing top-tier sump pump services, including installation, repair, maintenance, and replacement. Call us at 415-741-2820 or request services online.
All work is performed under active California contractors license #215233.
Sump Pump Maintenance, Replacement & Backup
Sump Pump Maintenance
Regular maintenance is essential to extend the lifespan of your sump pump and prevent unexpected failures. Our maintenance services include thorough inspections, cleaning, and testing of the system to ensure it operates smoothly. We identify and address potential issues before they become significant problems, giving you peace of mind.
A few reasons why scheduling regular sump pump maintenance can be beneficial:
- Routine maintenance, such as cleaning components and checking for wear, can extend the sump pump’s lifespan, saving you from costly replacements.
- Regular servicing helps ensure your pump operates reliably when needed most, reducing the risk of basement flooding and associated damages.
- Routine maintenance and servicing of your sump pump can prevent your product’s warranty from being voided.
Sump Pump Replacement
If your sump pump is beyond repair or nearing the end of its lifespan, we offer expert replacement services. Our team will help you select a suitable replacement and install it efficiently, minimizing disruption to your home. We ensure your new sump pump is set up for optimal performance and reliability.
Backup Sump Pump
Opting for a backup sump pump provides critical protection against flooding, especially during power outages or primary pump failures. It ensures continuous operation, safeguarding your home from water damage and costly repairs.
Additional reasons to invest in a backup sump pump include:
- In case of mechanical issues or maintenance needs with the primary sump pump, a backup ensures continuous operation and prevents potential flooding.
- A backup sump pump, typically battery-powered or water-powered, keeps your home protected even if the primary pump fails due to a power outage.
- Installing a backup sump pump provides reassurance that your basement is safeguarded against water damage, regardless of unforeseen circumstances affecting the primary pump.
Sump Pump Repair
A malfunctioning sump pump can lead to significant water damage. We diagnose issues accurately and provide effective solutions, ensuring your sump pump is back up and running quickly. Signs to be aware of that may indicate an issue with your sump pump include:
- Unusual sounds like grinding, rattling, or gurgling, which can indicate mechanical issues or debris clogging the system.
- A pump that runs constantly without shutting off, which may signal a malfunctioning float switch or a problem with the pump’s electrical components.
- Standing water or dampness around the sump pit or basement floor, suggesting the pump is not effectively removing water.

Sump Pump Installation
Installing a sump pump requires precision and expertise to ensure optimal performance. Our plumbing experts will assess your property’s needs, recommend the best sump pump system, and carry out the installation with meticulous attention to detail. If you want to protect your home and its contents with a sump pump, we offer a range of high-quality products to suit your requirements.
Benefits of a sump pump installation include:
- A sump pump effectively prevents flooding by automatically removing excess water during heavy rains or rising groundwater levels, keeping your home dry.
- By controlling moisture, a sump pump helps reduce the risk of mold and mildew growth, promoting a healthier living environment and preventing structural damage.
- Homes with sump pumps are more attractive to buyers thanks to their enhanced protection against water damage, potentially increasing property value.

Schedule Your Sump Pump Service
Whether you need a repair, routine maintenance, a new installation, or a battery backup system, our experienced plumbers are ready to protect your home from water damage. We proudly serve Sonoma, Marin, and Napa counties, including Santa Rosa, San Rafael, Kentfield, and surrounding cities. Call us now at 415-741-2820 or book your appointment online.
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 Sump Pumps
A sump pump is judged entirely on the night it is needed.
Schedule Service →C-61/D21 machinery and pumps licensed
Pump work sits inside a classification we hold directly.
Sized to the actual inflow
Basin size, inflow rate and discharge height decide the pump. Fitting a larger one causes short cycling rather than more protection.
Backup planned for power loss
North Bay storms and power shutoffs coincide. A pump with no battery or water backup is offline exactly when it matters.
Discharge routed so it does not return
A discharge that empties near the foundation recycles the same water. Route and termination are part of the install.
Alarm fitted where failure is expensive
Family-owned in the North Bay since 1932.

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
How often should I test my sump pump?
Test it every few months and especially before the rainy season. Replace backup batteries annually if installed.
What’s the difference between a sump pump and a sewer ejector pump?
A sump pump removes groundwater from basements or crawlspaces, helping prevent flooding. A sewer ejector pump handles wastewater from lower-level bathrooms or laundry rooms and pushes it up to the main sewer line. Both are vital for homes below grade level.