DRINKING WATER SYSTEMS
What is a drinking water filtration system?
A drinking water filtration system is designed to improve the quality, taste and clarity of your home’s water by reducing unwanted contaminants. Two common options are Reverse Osmosis (RO) and Ultrafiltration (UF), each offering different levels of filtration.
What is Reverse Osmosis (RO)?
Reverse Osmosis is a water purification process that uses a semipermeable membrane to filter out a wide range of contaminants. RO can reduce dissolved salts, heavy metals, bacteria, viruses and certain chemicals, making it a popular choice for homeowners looking for highly purified drinking water.
How does a Reverse Osmosis system work?
Water first passes through pre-filters that remove larger particles and sediment. It then passes through the RO membrane, which blocks many dissolved contaminants and impurities. Some water is discharged as reject water while the purified water is collected for drinking.
What are the benefits of Reverse Osmosis?
RO provides comprehensive filtration and can significantly improve the taste and odor of drinking water. It is also capable of reducing a broad range of contaminants, including certain heavy metals, dissolved salts, bacteria, viruses and chemicals.
Does Reverse Osmosis waste water?
Yes. RO systems produce some reject water as part of the filtration process. The amount can vary depending on the system and water conditions, but the page notes that approximately 20–30% of the water may be diverted as reject water.
Does Reverse Osmosis remove minerals from water?
Yes. Because RO removes many dissolved substances, it can also remove minerals such as calcium and magnesium. Whether this is a concern depends on your water source and personal preferences.
How often does a Reverse Osmosis system need maintenance?
RO systems require regular maintenance to continue working effectively. This can include replacing filters and the RO membrane as well as periodically sanitizing the system.
What is Ultrafiltration (UF)?
Ultrafiltration is a physical filtration process that uses a membrane with microscopic pores to trap larger particles and microorganisms while allowing water and many naturally occurring minerals to pass through.
What are the benefits of Ultrafiltration?
UF can improve water taste, clarity and overall quality while reducing larger particles, microorganisms and turbidity. It also typically preserves minerals such as calcium and magnesium.
Does Ultrafiltration remove heavy metals and dissolved salts?
UF is generally not as effective as RO at removing dissolved salts, heavy metals and certain chemicals. The right system depends on the specific contaminants present in your water.
Does Ultrafiltration waste water?
UF generally produces less wastewater than Reverse Osmosis, making it a more water-efficient filtration option.
Does Ultrafiltration provide a faster water flow?
UF systems often provide faster filtration and flow rates than RO systems. This can make UF a good option for households that want a steady supply of filtered water.
Can Ultrafiltration be used with well water?
UF can be suitable for a variety of water sources, including municipal tap water and well water. However, the best filtration system depends on the specific quality and contaminants in your water.
What is the difference between Reverse Osmosis and Ultrafiltration?
The main difference is the level and type of filtration. RO provides more comprehensive removal of dissolved contaminants but can produce wastewater and remove minerals. UF focuses on particles and microorganisms, typically preserves minerals, uses less water and can provide faster flow rates.
Which is better: Reverse Osmosis or Ultrafiltration?
Neither system is automatically better for every home. RO may be a better choice if you’re concerned about dissolved contaminants, heavy metals or salts. UF may be a better fit if your priority is reducing particles and microorganisms while preserving minerals and minimizing wastewater.
How do I know which drinking water system is right for my home?
The best system depends on your water source and the specific contaminants or water-quality concerns you want to address. A professional assessment can help determine whether Reverse Osmosis, Ultrafiltration or another filtration solution is the right fit for your home.