Product imagery from Sentry H2O.
Clean, great-tasting drinking water at your kitchen tap — chlorine, fluoride, PFAS, lead and arsenic taken out, alkaline minerals added back.
Free Ground shipping on every order, contiguous US. No minimum.
Designed to reduce chlorine and odor at the shower. Leaves your skin feeling nourished and your hair silky smooth. Installs in 5-10 minutes with basic hand tools.
Never think about filters again
Fresh replacement filters for this system, on schedule, at the auto-ship price.
Usually ships within a week. Sentry H2O ships orders on Mondays and Thursdays.
Total with the shower filter $449.99
DualGuard covers the city-water basics: ToxyGuard breaks down chlorine, chloramine, lead and arsenic, then AlkaGuard adds calcium and magnesium back for great-tasting water. In independent lab testing of the system, most PFAS compounds reached non-detect. Want the most complete setup? TriGuard adds a third, submicron BioChemGuard stage for $115 more.
0
gallons wasted
no drain line
6.8 → 8.2
pH — minerals added
back, not stripped
~30 min
DIY install
included fittings & cutters
See it, then taste it
One glass is flat and stripped. The other is bright and mineral-rich — the difference you can taste in the first sip.
Catalytic carbon breaks down chlorine and chloramine — the pool-water smell most cheap filters leave behind is simply gone.
The AlkaGuard stage is designed to add calcium and magnesium back and gently lift the pH — never stripped of its minerals like reverse-osmosis water.
Better-tasting and mineral-rich — a taste difference, not a health claim.
See what the WHO's own research found about mineral-depleted water →
What you're living with
Chlorine and chloramine you can smell before you taste — flavoring every cup of coffee, every ice cube and every pot.
Lead, arsenic, PFAS and chlorine byproducts can pass the legal tests and still reach your glass — this system takes them out, verified in the lab results below.
RO blasts out the minerals along with the bad stuff — and wastes five gallons or more per gallon produced doing it.
Cases in the cart, empties by the bin, money down the drain.
Sentry H2O fixes all of them — clean, mineral-rich water straight from your tap, with nothing hauled home and nothing sent down the drain.
Get the highlights
No drain line, no wastewater. A typical reverse-osmosis system sends five gallons or more down the drain for every gallon it makes.
Catalytic carbon built on German-engineered technology, adapted with US engineering.
AlkaGuard is designed to add calcium and magnesium back — lab-tested pH 6.83 → 8.21.
Included fittings and tube cutters — works with a dedicated faucet, your fridge line, or both. No plumber, no drain line.
Built in stages
Catalytic carbon targets chlorine, chloramine, lead, arsenic and fluoride, and an oxygenation stage adds oxygen back; AlkaGuard is designed to add calcium and magnesium back and gently lift the pH. So your water is filtered, alkalized and oxygenated — and in independent lab testing of the full system, most PFAS compounds reached non-detect. Optional BioChemGuard adds submicron media for wells (component evidence only).
Stage 1 · catalytic carbon
Catalytic carbon and reduction media break down chlorine, chloramine, fluoride, lead and arsenic as water passes through — and an oxygenation stage adds oxygen back. (PFAS is measured for the system as a whole — see the lab results.)
Stage 2 · minerals back in
Designed to add calcium and magnesium back and gently raise pH — the minerals reverse osmosis strips out are kept in, for a cleaner, rounder taste.
Optional · wells (TriGuard)
Optional third stage for wells: NASA-derived NanoCeram submicron media with component evidence only (media-level data, not a system test), right at the tap.
Stage names and targets match our published independent lab results. BioChemGuard is an optional third stage on the TriGuard (well) configuration.
The details
Specifications reflect the manufacturer (Sentry H2O). We do not call the complete systems NSF certified: Sentry H2O uses tested or certified components where applicable. See our Science page for published independent lab reports and testing gaps.
Sentry H2O · Replacement filters
Sentry H2O systems are built to last years — the filter change is what keeps them performing like day one. Subscribe once and the exact set arrives every 12 months at 10% off, or buy a one-time set.
Subscribe & save on filtersEligible purchase options are shown on the exact Sentry H2O filter page.
Straight answers
Families who want clean, great-tasting drinking water at the kitchen tap. On a well or worried about bacteria? The TriGuard 3-filter config adds BioChemGuard submicron media (component evidence only). Not sure? Our 60-second quiz confirms fit in a minute.
DualGuard (2 filters) suits city water. TriGuard adds a third BioChemGuard stage — submicron media with component evidence only (media-level data) — the right call for wells, homes near farmland, after flooding, or anyone who wants the extra margin.
Replace the DualGuard drinking filters at 3,000 gallons or 1 year, whichever comes first. Choose auto-ship every 12 months on the replacement-filter page and the exact set renews on that schedule at 10% off.
No. There is no drain line and no wastewater. A typical reverse-osmosis system sends five gallons or more down the drain for every gallon it makes — the Wellness System sends none.
No. We do not call the complete systems NSF certified. Sentry H2O uses tested or certified components where applicable, and the independent lab reports on our Science page are third-party tests of water samples, not certification.
It runs your water through up to five sequential stages under your sink. ToxyGuard works on chlorine, chloramine, fluoride, lead and arsenic; AlkaGuard then re-mineralizes the water and raises its pH slightly for a cleaner taste. On well water, the optional BioChemGuard TriGuard third stage adds submicron media with component evidence only. And in independent lab testing of the full system, most PFAS compounds reached non-detect.
Yes -- and we can point to the test. In independent before-and-after lab testing of the Sentry H2O Wellness System, most PFAS compounds were not detected above the lab's method detection limit; the three compounds quantified both before and after fell 97.44% (PFHxA), 99.29% (PFHpA) and 99.93% (PFBS). That's a measured result for the system as a whole (see the Science page for the full report), without the waste stream or complexity of a membrane system.
About 15 minutes, no plumber and no special tools. It fits under a standard kitchen sink and connects to your existing cold-water line -- there's no drain line to run and no electrical work, because the system needs neither. A step-by-step guide is included and our team is on hand if anything comes up.
Contact Mountain Pure Water first at (435) 990-3778 with your order number and details of the issue; include photos for shipping damage. We coordinate the review and issue any return instructions, including the correct destination. Wait for our instructions before sending anything back. Shipping damage, including broken fittings, is reviewed case by case. See our Shipping, Returns & Refunds policy for the 30-day return window, restocking fees and warranty terms.
Real customers, real water
Product relevance is stated explicitly; unrelated excerpts are never substituted.
Sentry H2O store review snapshot, independently collected by Judge.me, as of August 2026.
Reviews captured for this exact product
August 2026 review-count snapshot.
Rating, count and verification rate checked on Judge.me September 15, 2026.
See the Sentry H2O store reviews →Review of SENTRY WELLNESS SYSTEM
Awesome water system!
We absolutely love the Sentry H2O water system. Both my husband and I were skeptical at first, thinking that the water would still have a fun taste…We were wrong—it tastes great! Easy to install and fast delivery!
Review of SENTRY WELLNESS SYSTEM
Satisfied
We love the system, water tastes great . Quick shipping too. No more buying and handling 5 gal water jugs .
Review of SENTRY WELLNESS SYSTEM
Happy customer
I called to order and told them what I needed including tubing length. They asked me to place the order on the web. They texted me to fix a mistake I made and the order came in correct. Installation was a breeze. I love the water.
Review of SENTRY WELLNESS SYSTEM
In love
I love love my new system. We put in a water spout to use for now. Replaced a distillery system so saving time and aggravation. And the water tastes good.
Not sure which configuration fits? Take the 60-second water finder, or read the full independent lab results.
By Mick Preston, Co-founder · July 2026 · Educational guidance only — not health or medical advice. Reduction results depend on water chemistry, flow rate and system configuration; your results may differ. Independent lab testing, not an NSF/WQA certification.
Know your water
Start with independent findings for your area, then match your home to the right Sentry H2O system.
Your area's annual Consumer Confidence Report (CCR) lists what has been detected in your municipal tap water.
Salt Lake City? See what's really in your water →Enter your zip code for a plain-language breakdown of the contaminants found in your local supply.
Open the EWG database →Use our mail-in well-water kit when an individual result makes sense for your source or concern.
Shop the well-water kit →Want help matching the result to a Sentry H2O system?
Wally
Water finder
AI can make mistakes. Pricing confirmed at checkout.
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