“You Think Your Water’s Fine… Until the $7,800 Leak, the Rash That Won’t Go Away, or the Fourth Broken Appliance”
8,000+
Local Installs Since 1972
600+ 5/5
Five-Star Reviews on Google & Yelp
The Untold Truth About Reverse Osmosis & Home Filtration Systems in Irvine and Orange County… and Why the Wrong System Can Quietly Wreck Your Home, Health, and Bank Account
I’m Brian McCowin, and I’ve been in this business since I could carry a wrench.
My dad started McCowin Water back in 1972, long before “filtration” was trendy, before big-box stores sold one-size-fits-all systems, and before water started tasting like pool chemicals.
Today, after 8,000+ installs, I can tell you with full certainty:
Most people aren’t ignoring their water problems.
They just don’t know how quietly and expensively those problems show up.
If you’ve ever replaced a hot water heater early…
If you’ve got rust rings that won’t scrub off your sink…
If your kid’s eczema flares up after every bath…
If your clothes feel stiff, your coffee tastes off, or your dishwasher keeps dying…
It’s not your soap. It’s not your pipes.
It’s your water.
And you deserve the truth about what’s really in it, before it costs you thousands.
400+
Happy Customers
5/5
Customer Rating
8,000+
Local Installs Since 1972
600+ 5/5
Five-Star Reviews on Google & Yelp
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.
Keren Petito
Google Map Review
Unmatched customer service, professionalism, and education. I got connected with McCowin Water through Lowe’s and I am so glad I did! Brian reached out to me immediately to address my issues, wants, and needs.
Hani
Google Map Review
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. When the installation was done, he tested it and waited for few minutes to make sure that everything was working properly.
Emmanuel Kala
Google Map Review
This company is terrific! The communication is always wonderful. They arrive when promised and provide friendly, professional service for my reverse osmosis system. Thank you!
Julie
Google Map Review
Not only were they professional and efficient during the installation, but the aftercare has been above reproach. I highly recommend McCowin for your water needs.
Rene' Vercoe
Google Map Review
What “Clean” Water Is Really Costing You in Irvine and Nearby Communities
If you live in Turtle Rock, Shady Canyon, Woodbridge, Tustin, or Newport Coast, your water quality looks “fine” on paper… but destroys the essentials behind the scenes:
Burned-out water heaters choked with scale
Broken dishwashers, clogged sprayers, ruined laundry
Skin flare-ups from chlorine/chloramine
Pinhole leaks in copper pipes from untreated minerals
$100/month bottled water habits just to “feel safe”
You won’t find this on a city water report.
You’ll find it on your receipts, plumber calls, and repair estimates.
“Why Don’t More Water Systems Fix This?”
Because most systems aren’t built wrong…
They’re just sold wrong.
Big brands push one-size-fits-all filters.
Salespeople sell what’s in their warehouse, not what’s in your pipes.
Plumbers guess at the right setup and hope for the best.
At McCowin Water, we don’t sell systems.
We diagnose water, calibrate pressure, and design protection.
We’re not here to be the cheapest.
We’re here to be the last company you ever need for water quality.
50+ Years of Fixing What Other Companies Don’t Want You to Know About Your Water.
The McCowin Process (Why We’re Trusted by 8,000+ OC Families)
Test Your Water – Free, in-home, no obligation
Check PSI + Plumbing – Most companies skip this. We don’t.
Match the System to Your House – No upsells. No shelf picks.
Install With Precision – Zero leaks. Zero mess. Zero callbacks.
Support for Life – Real humans. Local. Fast.
No pressure.
No gimmicks.
No franchise drama.
We’re a local family company with 50+ years of earned trust.
Call us at (949) 569-5736 or schedule your free water test today.
The 3 Killers Hiding in Orange County Tap Water
1. Chlorine & Chloramines
Bleachy smell. Skin irritation. Copper corrosion.
These chemicals sanitize your water at the plant… but ruin your pipes and health at home.
2. Hard Minerals
Calcium + magnesium = scale. It builds up in your water heater, ruins appliances, and leaves spots on glass, clothes, and faucets.
3. Sediment & Metals
Iron, rust, and particulates clog fixtures, reduce flow, and damage everything from your coffee maker to your washing machine.
Your faucet doesn’t filter it. Your old system doesn’t stop it.
But you’re paying for it… every month.
Call us at (949) 569-5736 or schedule your free water test today.
"But What System Do You Actually Recommend?"
We carry more than one, because one size never fits all.
Our Most Popular Reverse Osmosis & Home Filtration Systems:
✅ Hague Signature Series
Ideal for high-mineral homes or heavy chlorine load. Longest warranty. Lowest waste.
✅ Maximizer Model 97
For families needing efficient softening + chlorine removal without the bulk.
✅ The Liberator
Compact, high-output, entry-level powerhouse.
✅ Vertex IsoTwist
Perfect for improving taste, odor, and moderate hardness.
✅ AO Smith Expert Series
Fixes PFAS, VOCs, nitrates, and advanced contaminants.
And if none of these fit your home?
We’ll tell you. Straight up.
We’re not here to move boxes.
We’re here to make sure you never replace the wrong one again.
Call us at (949) 569-5736 or schedule your free water test today.
Why Irvine and Orange County Families Trust McCowin Water
Why Irvine and Orange County Families Trust McCowin Water
“You didn’t send a salesman. You sent an expert.”
“Brian told me not to buy the top-tier system. He saved me money.”
“Our eczema cleared up. Our dishes sparkle. It’s night and day.”
“This is our second install in two homes. I wouldn’t call anyone else.”
What You’ll Feel Within 24 Hours of Installing the Right System:
- Better taste in every sip
- Softer, brighter laundry
- Skin that doesn’t feel dry or tight
- Appliances that finally work like they should
- The subtle but undeniable confidence of water you can trust
📍 Local Authority. Real Service. No Pressure.
- Irvine-based. Family-owned. Since 1972.
- 600+ five-star reviews.
- Fully WQA-certified systems.
- No franchises. No gimmicks. No guesswork.
- We’re not going anywhere. And neither is our support.
So… What’s the Catch?
There is none.
We offer a free, no-pressure water test.
We show you exactly what’s in your water.
We explain what system options make sense… and which don’t.
Then you decide.
No “act now” offers.
No fake urgency.
Just water intelligence, calibration, and clarity.
90% of Water Filtration Systems Don’t Work. These Are the Ones That Do.
“If Your Business Has Tap Water… You Have a Problem You Can’t See.”
Book Your Free Water Test Today
Call us at (949) 569-5736 or schedule your free water test today.
📍 We serve Irvine + all surrounding Orange County cities
You don’t need a franchise.
You don’t need another generic filter.
You need McCowin Water.
Because the right system doesn’t just fix your water.
It protects your home, your health, and your peace of mind… for life.
Call us at (949) 569-5736 or schedule your free water test today.
Brian & Joel were great! excited for our new system!
The team was punctual, efficient & very knowledgeable! Would highly recommend their team and services.
Shane
Google Map Review
Service at McCowin is 5+ stars from start to finish. One of the best companies I have ever worked with in any field. Our second time working with them and they are wonderful.
Michael
Google Map Review
McCowin Water has exceptional customer service. There staff are friendly, communicative and timely. Super job Joel and team!
Ana
Google Map Review
We are quite impressed by the professionalism and the punctuality of everyone we have had the pleasure to work with from McCowin Water.
Mike
Google Map Review
Clear Water. Quiet Damage. Real Stories from the Homes and Businesses We Had to Save.
Think Your Water’s Fine? Get It Tested. For Free.
