Great water, anywhere
Hydration
Alkaline wellness water at the tap and on the go — so the water you actually drink is the best in the house.
Choose your system
Sentry H2O Undersink Wellness System
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, Argonide NanoCeram PAC media (Sentry confirmed in writing); in Argonide’s own media tests it reached >5 LRV retention of a test bacterium and >3 LRV cyst retention. These are Argonide’s own media tests of NanoCeram and NanoCeram PAC, not a test or certification of the finished Sentry system.
Sentry H2O Portable System
Travel, off-grid living, RVs, equestrian and barn water supply, and emergency kits — anywhere you need filtration on demand.
Real customers, real water
What Sentry H2O customers say
Sentry H2O store review snapshot, independently collected by Judge.me, as of August 2026.
Reviews of products in this category
Each card names the product reviewed.
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 PORTABLE SYSTEM
No More Filling Carboys!
My husband and I have now purchased 2 Sentry filtration systems… one (home) under-the-sink kitchen mount and one portable for our RV. We’d spend the last couple of years filling 5 gallon carboys with drinking/cooking water as the municipal source is unacceptable, so this has proven to be a great solution for us and such peace of mind!
Review of Sentry H2O BioChem OTG Bottle
Love the water bottle
I love the water system and shower filter. Huge, huge difference. I then purchased the water bottle, love that as well. I take it with me to the restaurant and put the water in to filter out the chemicals. Big thumbs up on this entire system.
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 .
Reviews independently collected & verified by
Common questions
How do I handle a return, shipping damage or a warranty claim?+
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.
Is shipping free?+
Free Ground shipping on every order, contiguous US. No minimum. Shipping is $10 to Alaska, Hawaii and Puerto Rico. We ship to US addresses only. See our Shipping, Returns & Refunds policy for details.
What is catalytic-carbon filtration, and how is it different from reverse osmosis?+
Catalytic-carbon filtration uses specially processed activated carbon that reacts with and breaks down contaminants as water passes through multiple stages. Unlike reverse osmosis, our Sentry H2O systems don't strip the water of everything -- they target the bad stuff while leaving naturally occurring beneficial minerals in place. The non-RO city filtration stages produce no RO reject-water waste.
Does the system need electricity or produce wastewater?+
Our non-RO city filtration stages run on water pressure and produce no RO reject-water waste. UV accessories require power. Well treatment may produce waste or backwash water; requirements depend on the selected configuration.