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Enjoy fast and free shipping on all orders over $89! Contact us (855) 424-4376

Specialty Whole Home Water Filtration & Conditioning System for Large Homes & Small Commercial Facilities.

Central heat and A/C are standard in most homes – now enjoy the standard and benefits of EWS Central Water Filtration. Enjoy world-class EWS filtration and conditioning performance for your entire home for less than the cost of a bottle of water per day.

Drink delicious filtered water from every sink in your home, and prevent the absorption and inhalation of water contaminants while showering and bathing.

  • Healthy, delicious, odor-free water for your entire home – with one system
  • Hassle-free system does not require any regular maintenance or frequent filter changes
  • Protects your family from contaminants that are absorbed into the skin while showering and bathing
  • 100% pure granular activated carbon (GAC) – no silver impregnation, no metal resins, no fillers
  • Proprietary GAC is the highest grade and highest iodine rating available
  • Removes and reduces chlorine, VOCs, THMs, pesticides, pharmaceutical residues, and much more
  • Inhibits hard water build-up in pipes and heaters, and makes for easier spot clean-up on surfaces
  • Absolutely no salts, magnets, or chemicals
  • Meets or exceeds all FDA, NSF, ANSI, and California State standards and compliances
  • Easy installation, similar to a water heater
  • 10-year or 4,000,000 gallon filtration media lifespan¹
  • 10-year warranty
  • Made in the USA

Exclusive water filtration product of the New American Showcase Home and International Builders’ Show. Showcased by the National Association of Home Builders (NAHB), HGTV, NextGen, DPHA, and more. Available in over 700 Kitchen & Bath Showrooms in the United States.

¹Based on your local water conditions and usage.

The EWS 1665 At A Glance.

  • Installs at your main water service line to filter all the water in your home or facility.
  • Designed for 2? plumbing lines.
  • Conditions water hardness up to 500 mg/l or 30 grains.
  • 100 gallons per minute (gpm) flow rate – does not limit flow rate or pressure.
  • City water or well water*.
  • Our Standards. Manufactured and Assembled in the USA.

All product and components are compliant for food and beverage contact and comply, meet or exceed all current and applicable standards without exception.

All EWS product has been independently tested by an accredited third-party laboratory to meet and/or exceed all relevant FDA, California State regulations, and NSF standards for all claims made regarding NSF/ANSI standards. All EWS product is No-Lead Compliant to California AB1953.


Unparalleled product quality and longevity, award-winning customer service and expertise, incredible customer satisfaction – at EWS, top-performing USA-made filtration is all we do.

Real Protection from Contaminants. The EWS 1665 is an advanced filtration appliance designed to filter all water throughout large homes, estates, or small commercial facilities, providing truly healthy water to every sink and shower. All our whole home filtration appliances utilize the highest quality, highest iodine rating granular activated carbon (GAC) in order to effectively remove and reduce chlorine, chloramine, VOCs, THMs, pesticides, herbicides, pharmaceutical residues, obesogens, and more, and to assist with the problems associated with water hardness (naturally present calcium and magnesium minerals). Our filtration appliances are in use worldwide by hospitals, medical centers, health and fitness centers, military, professional athletes, and thousands of personal homes worldwide.

Healthier Home & Lifestyle. All EWS and CWL appliances are designed to prevent you and your family from drinking, absorbing, and inhaling various contaminants and carcinogenic (cancer-causing) chemicals. Enjoy chlorine-free, healthy, filtered water for your entire home – drinking, bathing, showering, pets, plants, pools, spas and plumbing. Enjoy healthier skin and hair, and delicious odor-free water from every sink. Alleviate symptoms of asthma and allergies by providing chlorine-free filtered water for showering and humidifiers.

Inhibit Water Hardness Without Salt Softening: The EWS 1665 helps to solve problems associated with hard water (up to 500 mg/l or 30 grains) without the disadvantages of softening, salts, and chemicals. Prevents and inhibits scale build-up in pipes and water heaters, and makes it easier to wipe off and clean up water spotting. Use less soaps and detergent, and protect the warranty on your home’s appliances.

Easy to Install & Self-Maintains. Our whole home filtration appliances are hassle-free, self-cleaning, user-friendly appliances that only require a filtration media change about every 10 years (based on your local water conditions and usage). Your EWS or CWL appliance installs easily like a water heater at the main water supply line to your home. Automatic backwashing prevents bacterial build-up and provides a continuously renewed surface area for filtration (plus, the backwash water is completely safe and filtered, and may be used for plants, gardening, pools, livestock, and pets).

The Highest Quality Possible. We are known throughout the industry for our impeccably high standards, quality materials, and American manufacturing. Your EWS 1665 contains 135 pounds (4 cubic feet) of the highest grade granular activated carbon (GAC) filtration media, which has ZERO chemical additives, fillers, metal resins or metal-based media, or silver impregnation (which is silver nitrate, a pesticide). Meets or exceeds all FDA, NSF, ANSI, and California State standards and compliances.

Environmentally-Friendly & Cost-Effective. Our appliances are the environmentally-friendly, maintenance-free choice to filter and condition your water — no salts, no chemicals, no corrosive softeners, no brine discharge, no gimmicks. Replace expensive and wasteful bottled water with healthy, filtered EWS water from every sink in your home. Our tanks and parts are recyclable and our proprietary filtration media is completely compostable and biodegradable. Our advanced digital valve head requires an ordinary electric outlet and consumes only the power of a doorbell.

Protect Your Home & Appliances. Aside from thoroughly protecting you and your family from contaminants, our appliances protect your kitchen appliances, water heater(s), and bathroom fixtures from the ravages of chlorine, chloramine, and volatile organic compounds (VOCs), which harm fixtures, heating elements, finishes, surfaces, connections, and internal parts.

*WELL WATER WARNING Well water is required to have independent, complete and proper testing of your well water to determine the proper course of action in order to specify the correct system(s). Optional: Any EWS or CWL whole home appliance may be combined with one of our softeners (preferably hot-side only) and/or ESSENTIAL sink filtration product based on customer preference or local water conditions.

Water Hardness Caution: Physical conditioning can have a limited effectiveness with water hardness up to 500mg/l or 30 grains and greater. Similar to issues with softeners and ion-exchange, conditioning can be adversely effected by abnormal levels of pH, alkalinity, and/or silica. Please consult with your sales associate or EWS, Inc. to establish proper aesthetic expectations, helpful household hints, or a combination of product and your best alternatives.


  • Model #: EWS-1665
  • Height: 72?
  • Diameter: 16?
  • Weight: 200 lbs.
  • Flow Rate: 100 gallons per minute
  • Filter Capacity: 10 Years or 4,000,000 gallons
  • Filter Replacement #: T-ICN/GAC1665
  • Tank Cover: Real stainless steel
  • Filtration Media: 135 lbs. (4 cubic feet) of NSF compliant 100% pure proprietary blend of biodegradable and compostable activated carbon
  • Hard Water Conditioning: Three EWS proprietary ICN riser manifolds, FDA food and beverage compliant

Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system. Install in cold water feed applications only (for instance, install before a water heater so hot water does not flow into the appliance). Install in compliance with local and state regulations.

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