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Test My Water

Hard Water Filtration Systems That Work: McCowin Water’s Top Picks

Hague Signature Series water filtration system units designed to improve water quality and address hard water issues in homes.

HAGUE SIGNATURE SERIES

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Hague Model 97 Maximizer water treatment system by McCowin Water, designed for improving water quality in California homes.

Hague Model 97 Maximizer

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Hague Hydroclean HC3

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Vertex IsoTwist Premium Reverse Osmosis System featuring multiple filtration stages, compact design, and water storage tank for clean drinking water.

Vertex IsoTwist Whole-Home Water Softener System

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The Blue Haven Whole-Home Water Filtration System

The Blue Haven

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LC Reverse Osmosis water filtration system featuring blue filter cartridges and a digital display, designed for light commercial use, alongside a compatible storage tank with mounting details.

LC Reverse Osmosis

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A.O. Smith Specialized Water Solution

AO Smith Specialized Water Solutions

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A.O. Smith Expert Series RC, water softner

AO Smith Expert Series RC Softeners

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How to Get Rid of Hard Water, Chemicals, and Contaminants... Without Replacing Your Entire System.

Commercial Systems

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Alkaline Systems

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Bottle-less Coolers

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What You Can Expect From McCowin Water

  • A reverse osmosis or home filtration system that works from day one
  • No leaks, no surprises, no nonsense
  • Friendly, expert installation
  • Maintenance options that fit your lifestyle
  • Full transparency, no pressure
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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.