Sans Water Purifier Review - Is its Reverse Osmosis system good?

I’ve spent the last six months testing the Sans Water Purifier in my kitchen, and I’m ready to share my honest thoughts about this countertop reverse osmosis system. If you’re tired of lugging home bottled water or questioning what’s really in your tap water, this review might be exactly what you need.

My First Impressions

When the Sans arrived at my doorstep, I was immediately struck by the sleek packaging. Unboxing revealed a modern, minimalist design that didn’t scream “clunky appliance” like so many water filtration systems do. The unit has a surprisingly small footprint (17.3″ x 6.7″ x 12.2″), though you’ll definitely need to plan for dedicated counter space.

Setup was very simple—no plumber required, no permanent installation, just place it on your counter, fill the reservoir, and plug it in. Within minutes, I was watching the glass pitcher fill with what would turn out to be some of the cleanest water I’ve ever tasted from a home system.

The Technology Behind Sans Water Purifier

What makes the Sans different from your standard Brita pitcher is its comprehensive filtration approach. The system uses true reverse osmosis—the gold standard in water purification—combined with UV technology in a four-stage process:

First, water passes through a sediment and carbon pre-filter that catches larger particles and removes chlorine. Next comes the heavy lifter: an ultrafine reverse osmosis membrane that filters down to 0.0001 microns (that’s incredibly small). The third stage is a dedicated VOC filter that targets volatile organic compounds. Finally, UV-C light provides a last line of defense against any potential microorganisms.

The result? Water that’s been stripped of virtually everything—including the bad stuff like lead, microplastics, and those notorious “forever chemicals” (PFAS) that have been making headlines.

Real-World Performance

I live in an older house with questionable pipes, so I was particularly interested in how the Sans would perform. The built-in TDS (Total Dissolved Solids) monitor showed my tap water starting at around 98 ppm—not terrible, but not great. After filtration, that number dropped to just 3 ppm.

But numbers aside, the difference in taste was remarkable. My morning coffee suddenly had nuance I’d never detected before. Even my houseplants seemed perkier after a week of Sans water (though that could be my imagination).

The system claims to remove:

99.9% of fluoride
98.8% of PFOA & PFOS (those pesky forever chemicals)
99.9% of microplastics
99.3% of lead
99.9% of nitrates
98.6% of chromium

These aren’t just marketing claims—Sans has had their system tested to NSF standards by independent labs, and the results are impressive.

Daily Use and Convenience Features

What’s really won me over are the thoughtful features that make the Sans practical for everyday use:

The glass pitcher fills automatically when placed in position, and holds about 57 ounces—my household of four filters water about 4-5 times per day, so this is very convenient. It takes about 2.5 minutes to fill completely, which feels reasonable given the thorough filtration happening.

The instant hot water feature has been unexpectedly useful. At 201°F, it’s perfect for tea, French press coffee, or instant oatmeal. I’ve actually retired my kettle since installing the Sans.

I also appreciate that the pitcher is removable, so I can bring it to the table during meals or store it in the fridge for cold water.

Maintenance and Long-Term Costs

Let’s talk about the elephant in the room: the Sans isn’t cheap. At $399.99 (currently on sale from $499.99), it represents a significant investment compared to basic pitcher filters.

However, when you break down the numbers, it starts to make more sense. The filters last significantly longer than most systems:

Pre/Carbon filter: 12 months
VOC Carbon filter: 12 months
Reverse Osmosis filter: 24 months

This works out to about $97.50 per year in filter costs—less than $2 per week for water that’s arguably cleaner than most bottled options. If you’re currently buying bottled water, you’ll likely recoup your investment within a year.

The system also tells you exactly when filters need replacing, so there’s no guesswork or premature replacements.

What Could Be Better

No product is perfect, and the Sans does have a few limitations worth noting:

First, it requires electricity to operate, so it won’t work during power outages. It also produces some waste water as part of the reverse osmosis process, though significantly less than traditional RO systems.

The reservoir needs regular refilling if you’re a heavy water user. For my household, I refill it about four to five times a day, which isn’t a big deal, but smaller families will fill it less frequently.

Finally, while the remineralization filter option (+$19.99) is nice for adding back beneficial minerals, I wish it came standard rather than as an add-on.

Who Should Buy the Sans Water Purifier?

After living with the Sans for about six months, I think it’s an excellent choice for:

People concerned about specific contaminants like lead, PFAS, or microplastics
Renters who can’t install permanent filtration systems
Coffee and tea enthusiasts who want the purest water for brewing
Anyone tired of buying bottled water but concerned about tap water quality
Those who value convenience features like instant hot water

It might not be the right fit if you’re on an extremely tight budget or have very limited counter space.

Where to Buy the Sans Water Purifier

The Sans Water Purifier is available for purchase directly through the official Sans website, where you’ll find the complete product details, current promotions, and subscription options for filter replacements. Currently priced at $399.99 (reduced from $499.99), the purifier ships directly from Sans’ US warehouse in Los Angeles with free standard shipping included.

Each purchase comes with a 30-day risk-free trial period and a comprehensive 3-year warranty. The company also offers responsive customer support available daily from 8am-8pm ET via live chat or email if you have questions before making your purchase.

The Bottom Line

The Sans Water Purifier delivers on its promises. It provides seriously clean water with minimal hassle, looks good doing it, and includes thoughtful features that enhance everyday use.

Yes, it’s a premium product with a price tag to match, but when it comes to something as fundamental as the water you put in your body every day, I think the investment is justified. The 30-day risk-free trial and 3-year warranty also help ease any purchase anxiety.

After six months of use, I’m impressed enough that I’ve already recommended it to several friends and family members. If clean, great-tasting water is a priority for you, the Sans deserves a serious look.

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