★ Now on One Marketplace
Transform every drop into alkaline wellness water.
Family-owned and built in Tempe, Arizona. Sentry H2O systems remove harmful toxins like chlorine, fluoride, PFAS, and arsenic — then add back the minerals and alkalinity your water is missing.
Pure water, sink to shower
Every system removes what shouldn't be in your water and restores what should — with a DIY install that takes about 15 minutes.
Wellness Home Bundle
Pairs the Under-Sink Wellness System with the Shower Filter — pure, mineral-rich water at your sink and chlorine-free water in the shower. For city-supplied water.
- Removes chlorine, fluoride, PFAS, arsenic, VOCs
- Adds back magnesium, oxygen, natural alkalinity
- DIY install in 15 minutes
Or subscribe for $393.30/mo
More InformationHome Bundle — Well Water
The same sink-to-shower bundle, reformulated to target the contaminants most commonly found in private wells rather than municipal water.
- Targets well-specific contaminants
- Pure alkaline water at the sink
- Chlorine-free, oxygenated shower water
Or subscribe for $393.30/mo
More Information
Sentry Shower Filter
Removes chlorine, heavy metals, and impurities from shower water — delivering oxygen-rich, mineral-balanced water that's softer on skin and hair.
- Softer hair, smoother skin
- Installs in minutes, no tools
- Lasts months per filter
Or subscribe for $99.70/mo
More InformationRemoves the bad. Restores the good.
City water may be "treated," but it can still carry chlorine, fluoride, PFAS, and arsenic. Sentry systems handle both sides of the job.
Under-Sink Wellness System
- Removes chlorine, fluoride, PFAS, arsenic, VOCs
- Adds back magnesium, oxygen, and natural alkalinity
- Creates true alkaline, mineral-enriched drinking water
- DIY install in 15 minutes — no plumber needed
Shower Filter System
- Eliminates chlorine and harsh chemicals that dry skin and hair
- Adds oxygen for a softer, spa-like feel
- Installs in minutes onto most standard showerheads
- Great for families, renters, and wellness-focused homes
Research-backed filtration, not guesswork
Sentry's proprietary filtration media is tested by independent labs to remove harmful toxins and enrich water with healthy minerals.
ToxyGuard Filter
Defends against common contaminants with comprehensive toxin removal, scale control, and added oxygen.
AlkaGuard Filter
Protects the vital nutrients your body needs through mineral enrichment and increased pH for boosted alkalinity.
Unsure of Your Water?
Check your local Consumer Confidence Report (CCR), the EWG Tap Water Database, or test with an at-home kit like Tap Score by SimpleLab.
What Sentry H2O customers are saying
"The water feels different... softer, smoother, and we actually drink more of it now."
"Our skin stopped feeling dried out after showers within days!"
"We are very pleased with the Sentry H2O filtering system. pH and alkalinity are higher, water is a lot softer. It was very easy to install."
"Sentry H2O is a family-owned, American-built company with a product that delivers what it promises. This first-time customer will be a long-time customer."
Pick Your Water Source
Choose City-Supplied Water or Well Water — each system is formulated differently.
DIY Install, ~15 Minutes
No plumber needed. Full instructions and tools included in the box.
Feel the Difference
Most customers report a noticeable difference within two weeks.
Every drop, every shower, pure wellness.
Shop the full Sentry H2O lineup on One Marketplace — family-owned, science-backed, and built to install yourself in minutes.
Shop Sentry H2O on One Marketplace →