
Under-Sink System
DualGuard™ Wellness System
Two dependable filtration stages with ToxyGuard and AlkaGuard for everyday contaminant reduction, mineral enrichment and balanced drinking water.
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From your first glass of water to every faucet and shower, Sentry makes it simple to choose the right level of protection.

Under-Sink System
Two dependable filtration stages with ToxyGuard and AlkaGuard for everyday contaminant reduction, mineral enrichment and balanced drinking water.
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3-Stage Under-Sink System
Everything in DualGuard, plus BioChemGuard as a dedicated third stage for additional targeted removal of bacteria, pathogen-based viruses and PFOS/PFOAS.
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Shower Filtration
Upgrade your daily shower with targeted filtration designed to reduce chlorine and other common water contaminants.
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City Water
Treat water throughout your home before it reaches your faucets, showers and appliances, with an included under-sink drinking-water system.
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Well Water
A customizable whole-home solution designed for private well water and targeted groundwater concerns.
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Annual Maintenance
Keep your under-sink Sentry Wellness System performing as designed with the correct replacement filter set.
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Talk with a Sentry H2O Water Specialist and get help choosing the right option for your home and water source.
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BOOSTS ALKALINITY, CREATING A MORE BALANCED PH LEVEL
NEUTRALIZES SOFT AND HARD SCALE
EASILY INSTALLS IN JUST 15 MINUTES, NO PLUMBING KNOWLEDGE REQUIRED
TREATS WATER IN 5 STAGES WITH ZERO WASTE
IS EFFECTIVE FOR ALL TYPES OF WATER, INCLUDING RECYCLED WATER
PERFECT FOR APARTMENTS, HOMES, RENTALS, FRIDGES, RVS, AND MORE
REMOVES HARMFUL TOXINS LIKE AMMONIA, LEAD, FLUORIDE, CYANIDE, COPPER, CHLORINE, CHROMIUM, ARSENIC, SULFATES, PESTICIDES, BACTERIA, PFAS, PFOS, PHARMACEUTICAL VOCS, AND MORE
ENRICHES WATER WITH ESSENTIAL NUTRIENTS LIKE CALCIUM AND MAGNESIUM
TREATS ALL WATER ENTERING YOUR HOME IN 2 STAGES
NEUTRALIZES SOFT & HARD SCALE; SOFTENS WATER WITHOUT SALT
INCLUDES UNDER-SINK SYSTEM FOR healthy, DELICIOUS DRINKING WATER
LONG-LASTING WITH MINIMAL MAINTENANCE; SIMPLY ADD WHOLE HOME REVITALIZER EVERY 1-3 YEARS
EASY PLUMBER INSTALLATION; PERFECT FOR NEW HOME BUILDS AND WATER SOFTENER REPLACEMENTS
REMOVES HARMFUL TOXINS LIKE AMMONIA, LEAD, FLUORIDE, CYANIDE, COPPER, CHLORINE, CHROMIUM, ARSENIC, SULFATES, PESTICIDES, BACTERIA, PFAS, PFOS, PHARMACEUTICAL VOCS, AND MORE
CUSTOM WELL SYSTEM ALSO REMOVES COMMON GROUNDWATER CONTAMINANTS FOUND IN WELL WATER LIKE IRON, MANGANESE AND NITRATES
CUSTOMIZED FOR CITY AND WELL WATER SOURCES, WITH ADD-ONS AVAILABLE FOR TARGETED TOXIN PROTECTION
Installation was simple, quick and explained very well! I had a pretty tight space to work in and the install still only took 10 minutes. The filter seems to be well made and working perfectly. Still seeing a loss of pressure after 6 days but, sufficient for use. Water tastes excellent! Thank you! Lee Murphy Satisfied customer.
Amazing product. SOOO happy we finally found a product we can feel good about; price wise and clean water! THANK YOU for creating such an amazing filtration system.
I am a licensed plumber in AZ. I purchased a wellness system for my home to give it a field test. I was so impressed that I have begun recommending and installing for my customers. Too many benefits to list. Check out the website and you will find all the details.
From commercial scale control to whole house filtration and delicious drinking water at home, experience the ultimate water treatment technology for cleaner water where you need it.
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At Sentry H2O, we believe that everyone deserves access to clean, healthy water. That's why we're dedicated to providing innovative water treatment solutions that remove harmful toxins, balance pH, and enrich water with essential minerals, supporting your overall health and well-being.
We are a family-owned and operated small business from Arizona. By combining the best German water technology with innovative American engineering, we proudly provide families, communities, and businesses across America with exceptionally effective water treatment systems.