A Guide to Reverse Osmosis Water Systems: How to Purify Your Drinking Water

When it comes to safe, clean, and great-tasting drinking water, many homeowners are turning to reverse osmosis water systems (also referred to as “RO systems,” “R-O systems,” or “R/O systems”). These use a method of water purification that eliminates a wide range of contaminants and off-tasting mineral additives. Whether you’re worried about impurities in municipal water or want to improve the taste and odour of well water, reverse osmosis (RO) can meet your needs.

ClimateCare is pleased to offer reverse osmosis products from Canada’s own Excalibur Water Systems, bringing you the best in Canadian innovation and performance.

Below, we describe how RO systems work, their benefits and what to consider before installation.

What Is a Reverse Osmosis Water System?

A reverse osmosis system is a home water filtration technology designed to purify water at the molecular level. At the core of the system is the semi-permeable membrane. This membrane allows only water molecules to pass through, effectively trapping dissolved solids, heavy metals, and other harmful contaminants. The only output is clear, crisp water that meets or exceeds drinking standards.

How Does Reverse Osmosis Work?

To understand how these systems work, it helps to know what “osmosis” is first. In nature, osmosis is the process where water naturally moves from lower concentrations of solute (less non-water particles) to higher concentrations (more particles) to balance the concentrations out. For example, when freshwater meets saltwater, more water molecules will move toward the salty solution to dilute it until the whole mixture is uniform.

Reverse osmosis flips that process around. Instead of balancing the water, pressure is applied to push water from the contaminated side through a special membrane—one with tiny holes so small they only allow pure water molecules to pass. This forces clean water to separate from impurities like lead, chlorine, fluoride, nitrates, and even microscopic bacteria.

The process unfolds in the following stages:

1. Pre-Filtration: Before water reaches the membrane, it passes through a filter that removes larger particles such as sediment, rust, and chlorine. This stage protects the membrane from damage and extends its lifespan.
2. Membrane Filtration: Water is then forced through a semi-permeable membrane (only allows water) under pressure. This reverse osmosis filter removes dissolved solids, such as lead, fluoride, arsenic, and nitrates, making it one of the most efficient water purification systems available.
3. Post-Filtration: In the final step, the water goes through an additional polishing filter to enhance taste and ensure any lingering minerals or odours are removed.

Benefits of Reverse Osmosis Systems

The benefits of reverse osmosis filtration are both immediate and long-lasting. Here’s why many households choose this system over other filtration methods:

1. Healthier Water Quality: RO systems remove up to 99% of contaminants, including harmful chemicals, bacteria, and dissolved salts.
2. Improved Taste and Odour: Say goodbye to chlorine taste and sulphur smells.
3. Unlimited Clean Water: Unlike bottled water, which can run out, reverse osmosis systems provide unlimited clean drinking water on demand. You can enjoy fresh, purified water whenever you need it, without the hassle of purchasing bottled water or managing a water cooler.
4. Cost-Effective: Investing in an RO water purifier pays off over time by reducing the need for bottled water or replacement filters.
5. Eco-Friendly: Fewer plastic bottles and reducing the need for transporting water means a smaller environmental footprint.
6. Energy Efficient: Most RO systems operate without electricity, making them both economical and environmentally beneficial.

Reverse Osmosis vs. Filtration Alternatives

When comparing reverse osmosis to other filtration methods like activated carbon, distillation or ion exchange, RO consistently stands out. Unlike basic carbon filters, RO can remove microscopic contaminants. Distillation can be slow and energy-intensive, and ion exchange systems are only effective against charged minerals but not other contaminants like bacteria.

In homes where water quality is a significant concern, especially those with hard water, high sediment, or potential chemical contamination, reverse osmosis is the gold standard.

Considerations Before Installing an RO System

While reverse osmosis offers many advantages, it’s important to consider a few factors:

• Water Waste: Traditional RO systems can produce a few litres of wastewater for every litre of purified water. Look for models with improved efficiency ratings.
• Mineral Removal: The filtration process can also remove beneficial minerals (like calcium, magnesium and fluoride). Some homeowners choose to remineralize their water after purification.
• Maintenance Requirements: Regular replacement of filters and membranes is needed. Follow your system’s recommended maintenance schedule for best results.
• Whole Home RO Systems: If you’re interested in treating all the water in your home, there are whole-home RO systems available. These systems ensure that all household water—from drinking and cooking to bathing and laundry—is treated to the same high-quality, chemical-free standard as your purified drinking water.

Make the Pure Choice with Reverse Osmosis Systems from ClimateCare

Water is essential for life, and quality matters. RO water purification systems offer one of the most effective and convenient ways to ensure your family is drinking clean, safe water every day.

Interested in upgrading your home’s water quality? Connect with your local ClimateCare today to see how they can help you improve your Ontario home’s drinking water.