Whole House Water Treatment Systems for Southern California: Softening + Filtration
A Hague whole-house system treats water at the point of entry, removing 15-20+ grains of hardness and 99% of chlorine/chloramines before it reaches your pipes. Engineered specifically for the high-mineral content of Los Angeles and Orange County.
Every drop of water in your home matters —
not just what you drink.
A whole-house water treatment system provides clean, high-quality water from every faucet and appliance, protecting your plumbing and enhancing the lifespan of your water-using devices. This investment ensures safer, better-tasting water, promoting healthier skin, hair, and cleaner laundry. Treat all your water for peace of mind and improved health.
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When it comes to protecting your home’s water, experience matters — and no one has more of it than Hague.
Founded in 1960, Hague Quality Water is the oldest major water treatment manufacturer in the U.S. still under original ownership. For over six decades, we've led the industry through cutting-edge innovation, unmatched quality, and patented technology that others simply can't replicate.
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As part of the longest-running water treatment manufacturer in the U.S., Hague Water SoCal has proudly served Southern California families and businesses with the most advanced, patented systems in the industry. We know this region. We know your water. And we know how to solve even the toughest water challenges — because we’ve been doing it right here in SoCal for more than three decades.
Why Choose Hague? Experience. Innovation. Trust.
Whole House Water Treatment System
Not all “high-efficiency” water softeners are created equal. In Southern California, where municipal water hardness often hits 15–20+ grains per gallon, a standard retail softener isn't enough—it's a liability. Many big-box systems rely on outdated timer-based designs that waste salt, water, and money while struggling to handle the extreme mineral scale found in Anaheim, Irvine, and Westchester.
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The Hague WaterMax® is engineered for the unique challenges of the LA Basin. It is a 3-in-1, American-made system that combines advanced softening with powerful carbon filtration to address not just "hard water," but the PFAS (forever chemicals), chlorine, and arsenic levels recently flagged in local 2026 water quality reports.
With true demand-initiated regeneration, the WaterMax® monitors your actual water usage, allowing it to use 50% less salt and 80% less water than conventional units. Whether you’re protecting a high-end tankless water heater in Pasadena or dealing with the specific groundwater profile of Long Beach, the WaterMax® consistently outperforms traditional softeners. To see exactly how we stack up against big-box brands and protect your home from 2026 utility rate hikes, explore our full performance comparison.
Highly
Efficient
Uses up to 50% less salt, 80% less water, and regenerates 80% faster than conventional systems.
Smart
Technology
On-demand regeneration by calendar or usage, multi-language computer, and 16-hour power outage protection.
Sustainable Performance
Designed to save money and reduce environmental impact without compromising water quality.
Precision Engineering
Every component is designed, engineered, and manufactured in the USA by Hague Quality Water.
Hague Water SoCal Customer Reviews
-Eric
"We received outstanding customer service from [Hague Tech] at Hague Quality Water. They were professional, knowledgeable, and went above and beyond to ensure everything was taken care of. I truly appreciate their dedication and highly recommend their services"
"{Hague Tech] came out and serviced our softener and reverse osmosis! Love these guys. They always make sure we’re in good shape. Highly recommend Hague!"
-John
"I have been a client of Hague Quality Water 💦 since January 2002. I have always enjoyed a positive experience with the service agents that visit my home. [...] Hague keeps up with my maintenance schedule and will always call to advise when it is time for service. No pressure. When I am ready they will absolutely take care of business"
-Ingrid
Want to Compare the Hague WaterMax to Other Systems?
Not all “high-efficiency” water softeners are created equal. Many systems still rely on outdated designs that waste salt, water, and money over time. The Hague WaterMax® is engineered differently—combining advanced softening and filtration into one compact, American-made system built for Southern California’s hard water.
With true demand-initiated regeneration and industry-leading efficiency, WaterMax® consistently outperforms traditional softeners and most competitor systems. To see exactly how it stacks up against other brands, technologies, and system designs, explore our full comparison.
