Water Treatment Maintenance
Water Treatment Maintenance Services in Marin, Sonoma & Napa County
Just like any major appliance in your home, your water treatment system needs regular preventative maintenance to perform at its best. A little routine care can go a long way, extending the life of your system, minimizing the risk of costly repairs, and preserving optimal performance.
When your system runs efficiently, it effectively reduces harmful contaminants that could impact your health or damage appliances like your water heater, dishwasher, or washing machine.
Well-maintained water treatment equipment also enhances the overall quality of your water, improving its taste, clarity, and smell. That means greater peace of mind every time you take a sip from the tap, hop in the shower, do a load of laundry, or simply wash your hands.
Let Ongaro & Sons handle the routine maintenance for you. Our expert technicians will inspect, clean, and calibrate your system to ensure it continues to deliver safe, high-quality water day after day. Contact us today to schedule your water treatment system tune-up!
At Ongaro & Sons, we believe that safe, clean water shouldn’t be a luxury, it should be something every the North Bayn can rely on daily. That’s why we don’t just install high-quality water treatment systems, we also offer expert maintenance services to keep them running smoothly for years to come.
Our experienced technicians provide routine maintenance for water softeners, reverse osmosis systems, sediment filtration units, and whole-home water treatment systems. Whether you’re protecting your health, your appliances, or your plumbing, consistent upkeep is essential to keeping your water treatment equipment working efficiently and effectively.
All work is performed under active California contractors license #215233.
Maintenance for Specific Water Treatment Systems
Water Softeners
We check salt levels, inspect and clean the brine tank, test the regeneration cycle, and look for signs of scale buildup. This helps extend the life of your softener and ensures your appliances, pipes, skin, and laundry benefit from softened water.
Reverse Osmosis (RO) Systems
RO systems rely on semi-permeable membranes that must be cleaned and replaced periodically. We inspect filters, sanitize the system, and test water purity to keep your drinking water fresh and safe.
Sediment Filtration Systems
Sediment filters protect your plumbing and appliances from grit, sand, and debris. We’ll check cartridge condition and flow rate, replacing filters when necessary to prevent pressure drops and water quality issues.
Whole-Home Water Filtration
Whether your system targets chlorine, VOCs, iron, or other contaminants, we provide a comprehensive inspection and service plan. We’ll ensure the media is effective and your water stays clean at every tap in the house.
Why Routine Maintenance Matters
Even the best water treatment systems need occasional attention to stay in top condition. Over time, filters clog, resin beads lose effectiveness, and system components experience wear. Without maintenance, your system could become less effective at filtering contaminants, allowing unwanted minerals, bacteria, or sediment back into your water supply.
With Ongaro’s professional maintenance services, we’ll:
- Inspect and replace filters and membranes as needed
- Test system performance and water quality
- Check for leaks or worn components
- Clean and sanitize tanks and reservoirs
- Ensure proper pressure levels and flow rates
We tailor our maintenance visits based on your specific system and your home’s water quality concerns, whether you’re dealing with hard water, local sediment, or chemical contaminants.

Protect Your Water and Your Investment
Maintaining your water treatment system with Ongaro & Sons ensures your investment continues to deliver long-term value. You’ll enjoy better water quality, lower utility bills, and fewer repairs to your plumbing and appliances. Plus, regular maintenance gives you the confidence that your water is safe for drinking, cooking, bathing, and everything in between.
Whether you’re in Marin, Napa, or Sonoma County, Ongaro & Sons is your trusted local expert for water treatment maintenance. Our skilled technicians have deep experience with all major brands and system types, and we stand by our work with a 100% satisfaction guarantee.

Schedule Your Water Treatment Maintenance Service
Whether you need a routine tune-up, a filter replacement, or a full system inspection, our experienced team is ready to keep your water fresh, clean, and worry-free. We proudly serve Sonoma, Marin, and Napa counties, including Santa Rosa, Two Rock, Cloverdale, Bodega Bay, Napa, and surrounding cities. Call us now at 415-741-2820 or book your appointment online for reliable water treatment service you can trust.
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 Water Treatment Maintenance
Treatment equipment quietly stops working, and nothing tells you except the symptom coming back.
Schedule Service →Performance verified, not just parts swapped
Testing the output confirms the system is doing its job. Changing a cartridge on schedule proves nothing on its own.
Intervals set by your water, not a generic calendar
Sediment load and hardness decide how quickly media exhausts.
Whole system checked, including bypass and controls
A softener left in bypass after a service is a common and invisible fault.
Salt, media and settings reviewed
Regeneration settings drift and are rarely revisited after installation.
Results recorded visit to visit
Keeping the test figures across services is what shows whether media is exhausting faster than expected.

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
Do I need a reverse osmosis system if I already have a water softener?
Yes, softeners remove minerals, while RO systems target smaller impurities and improve taste and purity.
How do I know if I need a water softener?
Signs include soap scum, stiff laundry, cloudy dishes, and frequent scale buildup on faucets and appliances.
Is sediment filtration necessary if I already have a water softener or RO system?
Yes. Sediment filters are essential even with a softener or reverse osmosis system. They act as a pre-filter, protecting more sensitive systems from clogging or premature wear caused by particulate matter.