Common Myths About Reverse Osmosis Filtration – Debunked!
Reverse osmosis (RO) water filtration has become one of the most popular methods for purifying drinking water in homes and businesses. But along with its rise in popularity, many myths and misconceptions have popped up — causing confusion among homeowners, business owners, and even contractors.
In this blog, we’re setting the record straight by debunking some of the most common myths about reverse osmosis filtration. Whether you’re considering installing an RO system or just curious about how it works, this guide will help clear the air.
Myth #1: Reverse Osmosis Removes All Minerals (and That’s Bad for You)
The truth:
It’s true that RO systems remove minerals like calcium and magnesium, but that’s not necessarily harmful. The main goal of an RO system is to remove contaminants — things like lead, arsenic, nitrates, PFAS, and bacteria — not just minerals.
The minerals found in tap water typically make up a very small portion of your daily mineral intake. Most of your essential minerals come from food, not water. Plus, many RO systems now include remineralization filters that add healthy minerals back into the water for better taste and balance.
Myth #2: Reverse Osmosis Wastes a Lot of Water
The truth:
Older RO systems were indeed notorious for high water waste, often dumping 3-5 gallons for every gallon of purified water. But today’s systems are far more efficient. Many modern RO units are designed with water-saving technology that cuts waste dramatically — often to a 1:1 ratio or better.
Some systems even have permeate pumps or zero-waste configurations that recycle brine water back into your home’s supply, making them eco-friendly options.
Myth #3: RO Water Is Too Acidic and Can Harm Your Health
The truth:
RO water has a slightly lower pH (usually between 5 and 7) because it lacks alkaline minerals. But this doesn’t make it harmful or “acidic” in a dangerous sense. The human body is excellent at maintaining its natural pH balance, and drinking RO water has no significant impact on this.
If you’re concerned about taste or pH, adding a remineralization filter or using an alkaline pitcher can easily bring the pH back up.
Myth #4: Reverse Osmosis Filters Are Only for Drinking Water
The truth:
While many people use RO systems for drinking and cooking water, they’re also used in aquariums, hydroponics, laboratories, commercial kitchens, and even ice makers. RO systems can also help protect household appliances from scale buildup, improving the lifespan of coffee makers, humidifiers, and steamers.
Myth #5: RO Systems Are Too Expensive and Hard to Maintain
The truth:
RO systems have become much more affordable in recent years, both in terms of upfront costs and maintenance. Many under-sink models now range from $150 to $500, depending on features.
Maintenance typically involves replacing pre-filters every 6-12 months and the RO membrane every 2-3 years — a task most homeowners can handle themselves. The long-term savings from buying less bottled water and reducing plumbing repairs often outweigh the system’s initial cost.
Myth #6: Bottled Water Is Safer Than Reverse Osmosis Water
The truth:
Bottled water is not always safer — in fact, it’s often just filtered tap water. RO systems give you on-demand access to purified water without the plastic waste and environmental impact of bottled water. Plus, you control the quality of your home system, whereas bottled water quality varies widely between brands.
Ready for Clean, Pure Water? Get a Quote Today!
Reverse osmosis is a proven, effective, and increasingly efficient technology that delivers clean, great-tasting water — so don’t let outdated myths hold you back from considering an RO system for your home or business. If you’re ready to explore your options or need help choosing the right system, contact us at Mosman Well Works today to get a personalized quote and start enjoying the benefits of pure, refreshing water!
