This McCowin Water System Is Not a Luxury. It Is a Standard.
Families in Irvine don’t gamble with health, home value, or peace of mind. Neither do I.
This is not a pitcher filter. Reverse osmosis forces water through a membrane so tight that chlorine, metals, pesticides, and hormone disruptors never reach your glass. What comes through is clean, safe water you can trust every single day.
Whole House Protection
Water doesn’t stop at the kitchen sink. It runs through your showers, your laundry, your dishwasher, and every pipe in your home. Whole house filtration locks contaminants out at the door so every faucet delivers water that protects instead of harms. Appliances last longer. Skin feels better. Laundry comes out clear.
Built for Value
Bottled water drains your wallet. Cheap filters waste your time. Quick fixes break down. Our McCowin system is built to last; low upkeep, less waste, real savings month after month.
Here’s the Bottom Line
If I wouldn’t put it in my own home, I won’t put it in yours. That’s why I stand behind this system.
Call us at (949) 569-5736 or schedule your free water test today.




Most families in Irvine think their water is “clean enough.” The glass looks clear. The taste seems fine. But clear water can still carry chlorine, metals, pesticides, and hormone-disrupting chemicals.
“Clean enough” is what slowly ruins appliances, dries out skin, and leaves hidden costs in every corner of the home. That’s the divide. Some families live with it. Others decide to stop it.
Reverse Osmosis That Resets the Water
This isn’t a pitcher filter or a quick fix. Reverse osmosis forces water through a membrane so fine it blocks up to 99% of what doesn’t belong. The chlorine, the metals, the chemicals you cannot see or taste... they never reach your glass. What’s left is water reset to its purest form, safe enough to build trust in every sip.
Whole House Protection That Stops Contaminants at the Door
Water doesn’t stop at the sink. It runs through your showers, your laundry, your dishwasher, and every pipe in your home. McCowin’s whole house system catches contaminants before they spread. That means appliances last longer. Skin feels right. Laundry comes out clean. Every faucet becomes protection, not part of the problem.
Built to Save Instead of Waste
“Clean enough” makes people waste money on bottled water, swap filters every few months, and replace appliances years too soon.
Our $3,990 system is built for the long run; low upkeep, fewer replacements, less waste. The result? Lower monthly costs and a home that stays clean and strong year after year.
The Line Families Choose in Irvine
Since 1972, I’ve seen what “good enough” water does. It’s always more expensive in the end. That’s why Irvine families trust this $3,990 system. It’s not a luxury. It’s the standard.
If I wouldn’t put it in my own home, I won’t put it in yours.
Call us at (949) 569-5736 or schedule your free water test today.
Reverse Osmosis: The Reset Button
Ordinary filters let too much slip through. Reverse osmosis doesn’t. It pushes water through a membrane so fine that chlorine, lead, pesticides, and hormone disruptors never make it to your glass. The bad gets stopped. The good gets through. What you’re left with is water reset to its purest form; safe enough that every sip builds trust, not doubt.
Whole House Filtration: The First Line of Defense
Every drop that enters your home carries more than you think. If you don’t stop it at the door, it spreads through your pipes, your showers, your laundry, even the air you breathe. A whole house filter locks contaminants out before they move. The result? No stains. Appliances that last longer. Skin that feels right. Every faucet in your home becomes part of the protection, not part of the problem.
Call us at (949) 569-5736 or schedule your free water test today.
The Truth About Irvine’s Water
It’s simple. We’re at the very bottom of the Colorado River. By the time it reaches Orange County, that water has already run through farms, factories, and treatment plants in other states. The city works hard to make it “safe.”
But safe and pure are not the same thing. What comes out of your tap is recycled water, carrying the leftovers of everywhere it’s been.
Where McCowin Steps In
That’s where I draw the line. McCowin Water takes the city’s effort further. Reverse osmosis at the tap. Whole house filtration at the door. Together, they strip out what the pipes can’t.
The result isn’t just drinkable water. It’s water you can trust in every shower, every load of laundry, and every glass on the table.
Jennifer’s Story
Jennifer Hill, a mom in Costa Mesa, made the switch.
“The team at McCowin are reliable and trustworthy... something rare these days. They’re so professional and helpful. I feel completely safe with their system in my home.”
Today, Jennifer doesn’t carry the quiet worry that her water might be part of the problem. Her kids no longer complain about dry skin. The odd taste is gone. What’s left is simple: water that feels right, and a home that runs clean.
Call us at (949) 569-5736 or schedule your free water test today.

Why McCowin Draws the Line Where Other Systems Fail
Here’s the truth: most companies sell one brand, so they push it whether it’s right for you or not. That’s not how I work.
I sit across from families in Irvine every week, and I listen. Then I design the system that actually fits your home. No sales pitch. No gimmicks. Just what keeps your water clean and your family safe.
I’ve been in this field for over 50 years. I’ve seen what untreated water does to homes, appliances, and health. I also know what stops it. Reverse osmosis at the tap. Whole house protection at the door.
When those two are in place, your water works for you... not against you.
This isn’t about selling filters. It’s about protecting your kids, your skin, and the investment you’ve already made in your home. That’s why families here trust me. Because I draw the line where other systems fail.
Call us at (949) 569-5736 or schedule your free water test today.

Service That Doesn’t Stop at the Door
Here’s how I see it: a water system isn’t worth much if the company disappears the day after they install it. That’s not McCowin. When we put a system in your home, we stay with you.
We check the system. We replace filters before they become a problem. We deliver what you need; salt, potassium, whatever keeps it running right. You don’t have to chase us down.
We show up.
And if something ever feels off, you don’t get a call center. You get us.
We troubleshoot. We fix. We make sure your reverse osmosis and whole house system keep doing the one job that matters; delivering safe, clean water every single day.
Call us at (949) 569-5736 or schedule your free water test today.

Local Roots. Real Trust.
Irvine isn’t just where we work... it’s where we live.
That’s why more than 600 families have trusted us enough to leave five-star reviews. They’re not just numbers. They’re neighbors who wanted water they could believe in.
We know this area’s water inside and out. The hard water that ruins appliances.
The chlorine that dries out your skin. The quiet contaminants that don’t show up until they’ve already done damage.
When we walk into a home, we don’t hand out one-size-fits-all filters. We match the system to the problem your family faces.
Then we make sure it works, so every glass, every shower, every load of laundry feels right.
Call us at (949) 569-5736 or schedule your free water test today.

Unmatched customer service, professionalism, and education. Brian reached out to me immediately to address my issues, wants, and needs.
Not salesy, not pushy. Honest and trustworthy. Thank you for being who you are and doing what you do!

Hani
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Hani
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You're in good hands when you work with Brian and his team. We've been working with him for 4 years and just completed our second water softener / RO machine install and he's always thinking about what options he may have to save us money and time.

Karen
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Karen
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Joel is the tech who came over to do the installation at my house. He was on time, personable and was patient with my questions and took time to walk me through how the system works. He is clearly knowledgeable and was very professional during the whole engagement.

Emmanuel
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Emmanuel
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Yes. It’s worse than you think. And it’s showing up in your life in ways you might not connect to the tap.
Here’s the truth: Irvine sits at the very bottom of the Colorado River system. By the time water gets here, it has already run through farms, factories, businesses, and homes in other states... again and again. Along the way, it collects things you’d never choose to drink. The city does its best to make it “safe.” But safe and pure are not the same thing.
Here’s how it shows up in daily life:
• Drug Residue in Your Glass
Prescription and over-the-counter drugs don’t vanish when they’re flushed or poured down a drain. Trace amounts survive treatment and can end up in recycled water. That means they may be in the glass you hand to your kids.
• Mildewy Smells in Your Shower
Ever notice a sour or chemical smell when you turn on the shower? That’s chlorine mixed with organic matter in the water. You don’t just smell it—you absorb it through your skin.
• Clothes That Never Smell Fresh
Hard water traps detergent and bacteria in the fabric. Even after a wash, clothes can hold a damp or sour odor. It’s not your detergent. It’s the water.
• Dry, Flaky Skin After a Shower
Chlorine and “sanitizing” chemicals strip the natural oils from skin and hair. The result is dryness, irritation, and brittle hair that never feels right.
• Weird White Film on Dishes
That cloudy, chalky film on your glassware? It’s hard water minerals and contaminants clinging to every surface. You eat and drink off it every day.
Municipal water teams work hard with what they have. But they can’t catch everything. And what they can’t catch? That’s on you.
• McCowin Water builds on the city’s effort, taking it one step further.
Reverse osmosis at the tap. Whole house filtration at the door. Together, they stop what the city can’t; so nothing harmful makes it into your home.
Call us at (949) 569-5736 or schedule your free water test today.
Because that’s like trying to stop a flood with a paper towel.
Most of those filters only catch the big, obvious stuff; dirt, rust, maybe some chlorine. What they leave behind are the microscopic dangers that do the real damage. And those dangers don’t just sit in your water. They move through your body, your appliances, and your home.
Here’s what they miss:
• Lead That Stays in Your Body
Old pipes can leak tiny bits of lead into your water. Basic filters can’t stop it. Lead doesn’t leave once it’s in. It builds up in your brain, kidneys, and nervous system.
• Chemicals You Can’t See or Taste
Pesticides, industrial runoff, cleaning agents. They slip through pitcher filters without slowing down. These are the same chemicals linked to cancer, liver damage, and hormone problems.
• Plastic You Don’t Even Know You’re Drinking
Microplastics, tiny shards of broken-down plastic, are now found in tap water everywhere. Regular filters let them through. You swallow them every day without knowing it.
• What Happens When You Rely on a Pitcher?
Your “clean water” still carries invisible toxins. Every sip feels refreshing, but it isn’t safe.
And your home pays the price too. Hard water minerals sneak through and clog pipes, eat away at dishwashers, coffee makers, and washing machines. Your skin dries out. Your health is still at risk.
The McCowin Difference
McCowin doesn’t stop at surface-level fixes. Our whole-home filtration system removes up to 99% of harmful contaminants; chlorine, lead, microplastics, and more. And with reverse osmosis at your kitchen sink, you get bottled-water quality without the waste or plastic.
With us, you’re not just filtering water. You’re protecting your home, your health, and your family’s future.
Call us at (949) 569-5736 or schedule your free water test today.
Neighbor, let’s be honest. You’re already paying for bad water. You just don’t see it all at once.
• The Bottled Water Bill
At first glance, bottled water looks cheap. But add it up. Cases every week. Deliveries every month. Hundreds each year. And here’s the kicker: much of that bottled water is just tap water in a plastic suit. You’re paying top dollar for the same stuff that flows from your sink.
• The Appliance Graveyard
Hard water doesn’t just leave spots. It clogs pipes, eats through dishwashers, wrecks washing machines, and burns out coffee makers. One repair. Another. Then full replacements. The costs pile up, fast.
• The Skin and Hair Tax
That itch after a shower. That brittle hair that never feels right. Chlorine and chemicals strip away your skin’s natural oils every single day. How much are you spending on lotions and conditioners just to fight water that should be helping you?
The McCowin Difference:
• No More Bottled Water: Reverse osmosis gives you bottled-water quality at the tap. Every glass is pure. Every sip saves money.
• Appliances That Last: Whole house filtration keeps hard water out, so your machines run better, longer.
• Skin and Hair That Feel Right: With chemicals removed, your water stops fighting your body and starts working with it.
The Investment
For $3,990, you stop wasting money on bottled water, repairs, and lotions; and put it into one system that protects your home, your health, and your family’s future.
If you want proof, call me or book a free water test. I’ll show you what’s in your tap, and why this system has become the standard for families in Irvine.
I’ve been in this business since 1972. I’ve seen every shortcut, every cheap filter, every company that promises “clean water” but leaves families with hidden costs.
The truth? Most systems are built like budget printers. They look cheap upfront, but bleed you dry in parts, maintenance, and repairs.
That’s not how we work.
We don’t sell filters designed to fail in a year. Our reverse osmosis and whole house systems are built with high-quality components that last decades, not months. Less maintenance. More protection.
When we put a system in your home, we don’t disappear. We handle filter changes, check-ups, troubleshooting; whatever it takes to keep your water safe.
You don’t chase us down. We show up.
We also know Orange County water inside and out. Hard water that ruins appliances. Chlorine that dries out skin. Contaminants that sneak through the pipes. We’ve spent fifty years solving these exact problems for local families.
Low-priced units often use weak parts that break fast. When they fail, you’re left with no support and unsafe water. The “bargain” ends up costing you more in the long run... and sometimes it costs your health.
What We Promise:
• Superior Build Quality: Systems designed to last.
• Transparent Pricing: No hidden fees, no traps.
• Dedicated Support: Real people, real service, for life.
Ron Calvarese, a long-time customer, put it best:
“What stands out about McCowin Water is the ongoing dedication to service. It’s rare to see such a commitment these days, and it feels like being part of a family.”
Choosing McCowin isn’t about buying another filter. It’s about peace of mind... for your health, your home, and your family’s future.
After fifty years, I’ll tell you this: the cost of going cheap is always higher.
Call us at (949) 569-5736 or schedule your free water test today.

Every day you wait, your water keeps working against you. It doesn’t show up all at once. It shows up in dry skin, broken appliances, and hidden costs you don’t see until it’s too late.
For $3,990, you can draw the line. Every drop in your home; every glass, every shower, every load of laundry; becomes clean, safe, and trusted. This isn’t a luxury. It’s protection.
And it’s a decision no family has ever regretted.
Don’t let another day slip by.
Call us at (949) 569-5736 or schedule your free water test today.
The sooner we test and install, the sooner your home stops bleeding money; and your family starts living with water that feels right.
I’ve seen it for fifty years: the cost of waiting is always higher.



Call: (949) 569-5736
222 Goddard Irvine, CA 92618
Monday to Friday (9:00am - 5:00pm)
Saturday (By Appointment)
Sunday (Closed)