Arius - The Only Bath System That Filters and Softens Water
Bathtub filters don't soften water. Arius does.
Arius combines powerful multi-stage filtration with true water softening for smoother hair, healthier-looking skin, and cleaner, softer bath water.
✔ Filters + Softens Water (Not Just a Filter)
✔ Noticeable Results From the Very First Bath
✔ Independently Tested for Performance
✔ 60-Day Risk-Free Guarantee
Installs in under 15 minutes. No plumber, drilling, or permanent plumbing changes required.
Apartment-friendly. Landlord-approved.
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Life is too short for frizzy, brittle, dull, uncontrollable hair and dry, irritated skin. Aquus One eliminates the largest number of contaminants from the water keeping your body protected.
What makes Aquus One different: It uses the same technology found in bulky whole house systems to eliminate hard water mineral buildup (or soften the water) in addition to removing chemical contaminants like chlorine, heavy metals and DBPs.
85% of US households have hard water – according to a government survey conducted by USGS. 98% of public water systems in the United States use some form of chlorine to disinfect municipal water. There have been many studies indicating that hard water is responsible for skin irritations, frizz and dryness in hair. Combined with chemicals like chlorine - that most municipalities use as a disinfection product - and your water turns into a harmful chemical cocktail that results in:
- Makes hair dry, dull, and brittle
- Causes frizz and breakage
- Fades hair color faster
- Leaves skin tight, dry, or flaky
- Clogs pores and contributes to breakouts
- Can contribute to premature skin aging
At Aquus we believe that you should only pay if a product only delivers on its promises. We offer the strongest guarantee in the industry: feel the difference in your hair and skin in 60 days or less or your money back. Clean, soft water can seriously do wonders to your body.
There are a lot of bold claims and empty promises in online shopping, especially in the water filtration space. Aquus One is independently lab tested to verify to actually remove what it says it does.
lab report

The Results Speak for Themselves
Effortlessly Simple Maintenance
Frequently Asked Questions
Do I need a plumber to install Aquus One?
Nope! Aquus One installs in just a few minutes. Each kit includes all necessary tools, connectors, and easy-to-follow video instructions. No drilling or permanent changes required.
Does Aquus One change water pressure?
Not significantly. It’s engineered to maintain strong, consistent flow while maximizing contact time with the filtration media.
What does Aquus One remove from water?
It filters chlorine, chloramine, heavy
metals (like lead, cadmium, chromium, arsenic), VOCs, disinfection byproducts
(DBPs), and softens hard water by removing calcium and magnesium minerals.
How often do I need to replace the filters?
Filter replacement is recommended every 3–6 months, depending on your local water quality and usage. The softener does not need replacing, it just needs a simple salt recharge about once every two weeks for a household of two.
See Why Aquus is Loved
What’s in The Box?