Monday - Friday 9:00 am to 5:00 pm

You Think Your Water’s Fine… Until the $7,800 Leak, The Rash, and the Dead Dishwasher. We Can Tell You in 30 Minutes... For Free.

8,000+

Local Installs Since 1972

600+ 5/5

Five-Star Reviews on Google & Yelp

Over 8,000 Installs. 53 Years in Orange County. No Pressure. No Guessing.
Just One Visit That Could Save You Thousands… and Protect Your Family for Life.

Most people don’t ignore water problems. They just don’t know they have them.

It doesn’t show up overnight. It creeps in.

• A little more static in your hair after a shower.
• A dishwasher that never quite cleans your glasses.
• A rash that won’t go away.
• A water heater that dies two years early.
• A weird smell in the laundry room that’s not mildew… but no one knows what it is.

You don’t connect the dots…
until the plumber hands you the estimate.
$7,800.
To fix something you didn’t even know was broken.

400+

Happy Customers

5/5

Customer Rating

8,000+

Local Installs Since 1972

600+ 5/5

Five-Star Reviews on Google & Yelp

Brian McCowin using water testing kit.
Play Video about McCowin Water team posing in front of company headquarters, showcasing our expert staff responsible for reverse osmosis and home water filtration system innovations.

Why "Clean" Water Isn’t Always Clean

If you live in Irvine, Tustin, Newport Coast, or anywhere in Orange County…

Your water probably looks okay. Maybe it even passed a city report.

But here’s the truth most people never hear:

Clean on paper doesn’t mean clean in your pipes.

We’ve tested thousands of homes in this county.
And over half of them had invisible damage happening behind the walls:

  • Pinhole copper leaks from mineral corrosion

  • Chlorine stripping skin oils and triggering eczema

  • Sediment ruining appliances from the inside

  • Pressure too high or too low (most people NEVER check this)

  • “Safe” levels of metals, chemicals, and VOCs that don’t show symptoms… until years later

You wouldn’t drink pool water.
You wouldn’t brush your teeth in diesel.
But you might be doing both… if your water system hasn’t been looked at the right way.

 


 

“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.

McCowin Water technicians using advanced diagnostic tools to optimize a whole house water softener system, demonstrating their expertise and innovation.

The McCowin Process (Why We’re Trusted by 8,000+ OC Families)

  1. Test Your Water – Free, in-home, no obligation

  2. Check PSI + Plumbing – Most companies skip this. We don’t.

  3. Match the System to Your House – No upsells. No shelf picks.

  4. Install With Precision – Zero leaks. Zero mess. Zero callbacks.

  5. 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.

McCowin Water technician conducting a quality check on a newly installed whole house water filtration system, exemplifying exceptional service.

"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.

HAGUE SIGNATURE SERIES

Hague Model 97 Maximizer

Hague HC3-25CX Water Softener System for Orange County Homes - McCowin Water

Hague Hydroclean HC3

Vertex IsoTwist

The Liberator

LC Reverse Osmosis

AO Smith Specialized Water Solutions

AO Smith Expert Series RC Softeners

“If Your Business Has Tap Water… You Have a Problem You Can’t See.”

Commercial Systems

Alkaline Systems

Bottle-less Coolers

Interior view of McCowin Water showroom in Irvine, California, displaying advanced home water filtration systems and reverse osmosis solutions.

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.

Clear Water. Quiet Damage. Real Stories from the Homes and Businesses We Had to Save.

Four glass carafes of fruit-infused water, symbolizing clean, filtered drinking water made possible by full home water filtration systems from McCowin Water.

Why full home water filtration systems calm your mind and protect your home… and why they’re worth every dollar.

What full home water filtration systems are, and how they work When you drink a nice clear drink, you probably […]

What is the downside of reverse osmosis water in Irvine homes—McCowin Water’s 5-stage system shown with twist-off filters and compact design

What Is the Downside of Reverse Osmosis Water?

The Truth Nobody Wants to Say… Because They’re Too Busy Selling You a System What Is the Downside of Reverse […]

Five-star review from Alex Phan describing his household water filter system installation with McCowin Water, highlighting expert service, clean pipework, and fast results.

This Household Water Filter System Changed Everything. Here’s Why the Whole Family Felt It Immediately

From the first online review to post-install follow-up, this is what a real household water filter system looks like when […]

Customer review from Leslee Hatch praising McCowin Water for their personalized consultation, professional installation, and passion for client care in her house water filtration experience.

Why House Water Filtration Isn’t a Luxury…It’s a Line of Defense

One Orange County homeowner discovered how the right house water filtration system changed everything… and why clarity, not hype, is […]

Veteran homeowner April Tapia shares glowing 5-star review of McCowin Water’s expert water filter system for home installation and service

Why a Water Filter System for Home Isn’t Enough… Unless It Comes with This Level of Service

One Veteran’s Story Reveals Why McCowin Water’s Listening-First Approach Makes Their Water Filter Systems for Home the Most Trusted in […]

Customer review for water softener repair in Irvine – five-star service from McCowin Water technicians Joel and Dylan

Most Water Softeners in Irvine Are Quietly Failing… And Costing Homeowners Thousands

What You Need to Know Now About Potential Water Softener Repair in Irvine Before the Damage Hits Your Plumbing, Appliances, […]

Think Your Water’s Fine? Get It Tested. For Free.


Brian McCowin standing at the entrance of McCowin Water headquarters in Irvine, California, welcoming visitors to explore innovative water filtration solutions.
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