“Purified.” It’s printed on bottles, taped to refill stations, and worked into every water company’s pitch — including ours. But it’s a word that’s easy to say and hard to pin down. Purified how? From what? Does it actually make a difference to what ends up in your glass?
If you’ve ever wondered what’s really going on behind the word, this one’s for you. At H2OtoGo, every drop we dispense across our Shuswap and Okanagan stations goes through two distinct steps — reverse osmosis and UV sterilization — before it reaches your bottle. Here’s what each one does, in plain terms, and why the combination matters.
“Purified” isn’t a legal magic word — the process is what counts
The first thing to understand is that “purified” describes an outcome, not a single specific method. Water can be purified in several ways, and not all of them are equal. So the useful question isn’t “is it purified?” — it’s “how is it purified?” That’s where reverse osmosis and UV come in. They’re two different tools that handle two different kinds of problems, and using them together covers more ground than either does alone.
Step one: reverse osmosis (the fine strainer)
Reverse osmosis — usually shortened to RO — is the workhorse of serious water purification. Picture a filter so fine that water molecules can squeeze through it, but almost nothing else can.
Here’s the idea. Ordinary tap or source water carries dissolved solids: minerals, salts, and various impurities that are far too small to catch with a basic filter. RO works by pushing water under pressure against a semipermeable membrane. Water passes through; the dissolved solids and contaminants get left behind and flushed away. What comes out the other side is water stripped down to a clean, neutral baseline.
The practical payoff is taste and consistency. A lot of what makes water taste “off” — flat, metallic, mineral-heavy, or just weirdly regional — comes from those dissolved solids. Strain them out and the water tastes clean and, importantly, the same every single time. That consistency is a big part of why people who switch to RO water often say they can’t go back.
Step two: UV sterilization (the light that finishes the job)
RO does an excellent job on dissolved solids, but there’s a second category of concern that filtration alone isn’t designed to guarantee: living microorganisms. That’s where ultraviolet sterilization comes in.
UV purification passes the water past a specific wavelength of ultraviolet light. That light disrupts the DNA of microorganisms so they can’t reproduce or cause harm. There are no chemicals added, nothing left in the water, and no taste or smell introduced. It’s a clean, physical finishing step — the water goes past the light, and it comes out the other side treated.
Think of UV as the belt-and-suspenders move. Even after RO has done its filtering, UV is there to handle the biological side of the equation. Two different problems, two different tools.
Why RO and UV, instead of just one?
You’ll notice a theme: RO and UV solve different problems. RO targets dissolved solids and impurities. UV targets microorganisms. Neither one is really a substitute for the other, which is exactly why H2OtoGo uses both in sequence rather than picking one.
It’s the same logic you’d use anywhere else. You lock your front door and your windows — not because either lock is weak, but because they cover different entry points. Purifying water is the same. Run it through the fine membrane, then finish it under the light, and you’ve addressed both categories in one pass. That’s the “purified” behind our label.
What this means for you at the station
Here’s the part that matters when you’re standing at a refill station with an empty bottle: you don’t have to run any of this yourself. The RO and UV steps happen inside the system before the water ever reaches the dispenser. You bring your bottle, you fill it, and what comes out has already been through both stages.
That’s true at every one of our 13 self-serve stations across the Shuswap and Okanagan, and it’s true at 2 a.m. as much as 2 p.m., because the stations run around the clock. The purification isn’t a premium add-on or a “some locations only” feature — it’s just how the water is made.
A quick word on what purified water is not
Being clear-eyed matters, so a couple of honest notes. Purified water is about cleanliness and consistency, not about being a health product with special powers. It’s water — very clean, very consistent water — and the value is in the taste, the reliability, and skipping the plastic jugs, not in any miracle claims. We’ll always tell you straight.
If you’re comparing purified refill water to single-use bottled water from the store, the water itself is often held to a comparable standard — but you’re buying it without the per-bottle plastic and the per-jug price. That’s covered in another post in this series.
How purified compares to other kinds of water
It helps to place purified water next to the other terms you see on labels, because they don’t all mean the same thing.
Spring water is water from an underground source, bottled more or less as it comes, with whatever minerals that source carries. It isn’t defined by a purification process — it’s defined by where it comes from. Taste varies with the source.
Filtered water is a broad term that can mean anything from a simple carbon filter on a pitcher to something more involved. A basic filter improves taste and catches larger particles, but it isn’t the same as pushing water through a reverse-osmosis membrane. “Filtered” tells you very little on its own.
Distilled water is purified by boiling water to steam and condensing it back, which leaves impurities behind. It’s very pure, but the process is energy-heavy and the flat taste isn’t to everyone’s liking for everyday drinking.
Purified water, the way we make it, means the water has been through a defined process — RO plus UV — to reach a clean, consistent standard, regardless of the original source. That’s the key difference: purified describes a result reached by a process, not just an origin or a single basic filter.
None of these is inherently “the best” for every purpose. But for clean, consistent, great-tasting drinking water without a per-jug plastic bottle, RO + UV purified refill water is hard to beat.
Consistency is the underrated part
People focus on “clean,” but the quiet superpower of purified refill water is consistency. Because the process is the same at every station and every fill, the water tastes the same on Monday as it does three weeks later, in Salmon Arm as in Summerland. You’re not at the mercy of which source is feeding a given tap that day. For anyone who’s particular about how their water tastes — or who just wants their coffee, tea, and water bottle to taste the same every time — that reliability is worth as much as the purification itself.
Taste the difference yourself
The best way to understand “purified” isn’t to read about membranes and UV wavelengths — it’s to taste a glass of RO + UV water next to whatever you’re drinking now. Most people notice the clean, neutral taste immediately.
Your nearest H2OtoGo station is self-serve and open 24/7. Bring a bottle or grab one on site, fill up, and see for yourself. Find your closest location at h20togo.ca, and while you’re there, consider joining the free VIP Club — you’ll get member-only offers and refill rewards, plus you’ll be entered to win Free Water Refills for 3 Months (1 bottle/day limit; ongoing contest, so you can enter anytime). Questions about the process? Call us at 778-200-5588; we’re real people and we’re happy to explain.