When Should You Replace Your Reverse Osmosis Filters?
Key Takeaway: No single reverse osmosis filter replacement schedule fits every system. Different cartridges and membranes have different service lives, and replacement timing can also depend on water quality, household usage, and the manufacturer’s specifications. Follow your RO system’s recommended service intervals, and watch for changes in flow, taste, odor, or overall performance that may indicate it’s time for maintenance. Reverse osmosis filter replacement is one of the most important parts of maintaining an RO drinking water system. Your system relies on multiple filtration stages, and those components don’t last forever. Waiting until your drinking water tastes different isn’t the best way to decide when to change them, either. A filter can reach the end of its recommended service life without producing an obvious change you can see, smell, or taste. So, how often should you replace RO filters? The most reliable answer comes from your system manufacturer. The cartridge type, your household’s water usage, incoming water quality, and the specific RO system can all affect the right service interval. Here’s how the different stages work, which warning signs deserve attention, and why staying ahead of filter replacement matters. Quick Facts About RO Filter Replacement RO systems use multiple stages. Sediment, carbon, membrane, and post-filtration components perform different jobs and may have different replacement intervals. Don’t rely on taste alone. Some filters can reach the end of their recommended service life without creating an obvious taste or odor change. Flow changes can be a warning sign. A noticeable drop in water production or faucet flow may indicate a clogged filter or another system issue. Use the correct replacement filters. Cartridges aren’t necessarily interchangeable, even when they look the same size. How Often Should You Replace Reverse Osmosis Filters? Replace your RO filters according to the service intervals specified by the system manufacturer rather than relying on one universal schedule. A reverse osmosis drinking water system typically contains several stages. Depending on the equipment, those may include a sediment prefilter, one or more carbon filters, the RO membrane itself, and a final polishing filter. Each component has a different job. That also means you don’t necessarily need to replace them at the same time. Manufacturers may base a filter’s service life on time, gallons treated, or other operating conditions. Incoming water characteristics and how much drinking water your household uses can also affect actual filter life. For that reason, your system manual or manufacturer’s maintenance specifications should always be the starting point for determining when a particular cartridge needs replacement. The Most Important Rule Don’t assume every cartridge in your RO system follows the same schedule. Identify your system and its individual filtration stages first, then follow the replacement requirements for those components. What Do the Different RO Filters Do? An RO system uses multiple treatment stages because each component is designed to perform a different part of the filtration process. Sediment Prefilter A sediment filter is generally positioned early in the treatment process. It captures particulate matter before it reaches downstream components. As trapped material accumulates, the filter can become increasingly restricted. Staying on top of replacement helps maintain normal flow and protects later stages of the system. Carbon Prefilter Carbon filtration can reduce substances such as chlorine and compounds that affect taste and odor, depending on the cartridge and its certifications. In an RO system, prefiltration can also be important for protecting the membrane. The exact configuration depends on the equipment and source water. Reverse Osmosis Membrane The membrane is the component that gives reverse osmosis its name. Water is forced through a semipermeable membrane designed to reduce dissolved substances while sending a concentrated waste stream to the drain. The membrane generally follows a different service schedule than disposable prefilters, so it shouldn’t automatically be replaced simply because another cartridge is due. Post-Carbon or Polishing Filter Many systems include a final filtration stage between the storage tank and drinking-water faucet. This stage is commonly used to polish the water’s taste before dispensing. Like the other cartridges, it needs to be replaced according to the requirements of the particular RO system. What Are the Signs Your RO Filters Need Replacement? Reduced flow, changes in taste or odor, unusual system performance, and reaching the manufacturer’s specified service interval can all indicate that RO maintenance is due. Watch for several common clues: A noticeable decrease in flow from the RO faucet The storage tank taking unusually long to refill A new or unusual taste or odor Changes in normal system operation A filter-change indicator or service notification The cartridge reaching its recommended service interval These symptoms aren’t proof that a particular filter has failed. Low flow, for example, can have several possible causes within an RO system. That’s why troubleshooting matters. If replacing a cartridge doesn’t correct the problem—or you aren’t sure which stage is responsible—a professional drinking water system service can evaluate the complete system. Don’t Wait for Bad-Tasting Water: Taste and odor are useful clues, but they aren’t reliable indicators of every filter’s remaining capacity. Your senses can’t detect some contaminants. Follow the manufacturer’s replacement schedule even when the water still seems normal. What Happens If You Don’t Replace RO Filters? Delaying filter replacement can reduce flow and may compromise the treatment performance the system was designed to provide. Filters have limited capacity. Mechanical filters gradually collect particles, while adsorptive media such as activated carbon have a finite amount of surface area available to capture certain substances. Once that capacity is used, the cartridge may no longer perform as intended. A clogged prefilter can also restrict flow through the system. And because RO treatment relies on multiple stages working together, neglecting one component can affect overall operation. Regular maintenance helps each stage do its intended job, rather than waiting for an obvious performance problem. Can You Replace Reverse Osmosis Filters Yourself? Some RO systems are designed for straightforward cartridge replacement, but whether DIY service makes sense depends on the equipment and your comfort level. For example, Commers’ current RO-75
The Value of Professional Water Softening Systems: Why the Right Solution Protects Your Home
Key Takeaway: A professionally selected and installed water softening system does more than eliminate hard water. It helps protect plumbing, appliances, fixtures, and water-using equipment while improving cleaning performance throughout your home. By matching the right system to your household’s water conditions, homeowners can enjoy greater efficiency, easier maintenance, and long-term value. Hard water is one of the most common water quality challenges facing Minnesota homeowners. Although the minerals found in hard water are naturally occurring, they can leave behind scale buildup that affects plumbing, reduces appliance efficiency, and makes everyday cleaning more difficult. Many homeowners don’t notice the effects immediately. Instead, hard water problems develop gradually. White mineral deposits begin appearing on faucets and showerheads. Soap becomes harder to rinse away. Water heaters take longer to recover. Dishwashers leave behind cloudy glasses, and washing machines struggle to keep clothing looking its best. While temporary fixes may reduce some of these frustrations, a professionally designed water softening system addresses the source of the problem. Rather than treating symptoms, it reduces the hardness minerals responsible for scale buildup throughout your home’s plumbing system. Choosing a professional water softening system isn’t simply about installing equipment. It’s about selecting a solution that’s properly sized for your household, your water usage, and your local water conditions. That customized approach helps deliver better performance while protecting your investment for years to come. Quick Facts About Professional Water Softening Systems Hard water contains dissolved minerals. Calcium and magnesium are the primary minerals responsible for water hardness. Scale builds slowly. Mineral deposits accumulate over time inside appliances, plumbing fixtures, and water heaters. Professional sizing matters. The best water softener depends on your household’s water hardness, daily usage, and family size. Regular maintenance supports long-term performance. Routine inspections and proper salt management help keep systems operating efficiently. What Does a Professional Water Softening System Do? A professional water softening system removes hardness minerals such as calcium and magnesium before they circulate throughout your home’s plumbing. By exchanging these minerals for sodium or potassium ions, the system helps reduce the scale buildup that commonly develops inside pipes, fixtures, appliances, and water heaters. The result is more than softer-feeling water. A properly operating system can help improve soap performance, reduce spotting on dishes and fixtures, minimize mineral accumulation inside plumbing, and support more consistent appliance operation over time. Unlike one-size-fits-all products purchased off the shelf, professionally selected systems are designed around your home’s specific water conditions. Factors such as water hardness, household size, plumbing configuration, and daily water consumption all influence which system will deliver the best long-term results. How Does Hard Water Affect Your Home? Hard water impacts nearly every area of a home that uses water. While the changes often happen gradually, mineral buildup can become increasingly noticeable over the years. Inside water heaters, scale can collect on heating elements and tank surfaces. Dishwashers may develop mineral deposits that reduce cleaning performance. Washing machines can accumulate scale on internal components, while faucets and showerheads often become restricted by mineral buildup. Hard water also affects everyday cleaning. Soap and detergent become less effective because hardness minerals interfere with their ability to lather properly. This can leave behind soap residue on dishes, glass, shower doors, clothing, and even skin. Common Signs You May Have Hard Water White spots on dishes and glassware Soap scum on tubs, showers, and sinks Mineral buildup around faucets Dry skin or dull-looking hair after bathing Stiff laundry after washing Reduced water heater efficiency Scale buildup on plumbing fixtures Frequent cleaning to remove hard water stains Is a Professional Water Softener Worth the Investment? For many homeowners, the answer is yes—especially in areas with moderate to very hard water. A professionally installed water softener helps protect expensive household systems while improving day-to-day convenience. Instead of continually fighting mineral deposits, homeowners often spend less time cleaning fixtures, use less soap and detergent, and enjoy more consistent water quality throughout the home. The value extends beyond convenience. Protecting plumbing and water-using appliances from excessive scale buildup may help reduce maintenance concerns and support better long-term performance. While every home is different, many homeowners find that investing in proper water treatment provides benefits that continue long after installation. Homeowner Tip: If you’re noticing hard water stains, cloudy dishes, soap that doesn’t lather well, or increasing mineral buildup around fixtures, don’t assume your appliances are the problem. A professional water test can determine whether hard water is the underlying cause and help identify the right treatment solution before small issues become larger ones. How Does Professional Installation Make a Difference? Choosing the right equipment is only part of the equation. Even the highest-quality water softener can struggle to perform if it isn’t properly sized, installed, or programmed for your home’s specific water conditions. Professional installation begins with understanding your water. Water hardness levels, household size, plumbing layout, daily water usage, and future water demands all influence which system will provide the best long-term performance. Instead of relying on estimates or generic recommendations, professional installers evaluate these factors before recommending equipment. This helps ensure the system regenerates efficiently, uses the appropriate amount of salt and water, and delivers consistent soft water throughout the home. Proper installation also includes configuring the system correctly, verifying plumbing connections, checking bypass valves, and confirming that regeneration settings match your household’s actual water usage. These small details play an important role in maximizing efficiency and reliability. How Soft Water Helps Protect Your Water Heater One of the biggest beneficiaries of softened water is often the water heater. Hard water minerals can gradually accumulate inside both traditional tank-style and tankless water heaters, creating scale that makes heating elements work harder over time. As mineral buildup increases, water heaters may become less efficient, require more maintenance, or take longer to produce hot water. While regular maintenance remains important, reducing the amount of hardness minerals entering the system helps minimize one of the primary causes of scale formation. For homeowners, protecting a water heater means protecting one of
PFAS in Drinking Water: What Minnesota Homeowners Should Know About Forever Chemicals
Key Takeaway: PFAS, often called “forever chemicals,” are a group of synthetic compounds that can persist in the environment and drinking water for years. While it’s nearly impossible to eliminate every source of PFAS exposure, homeowners can take meaningful steps to reduce exposure through professional water testing and proven treatment technologies such as reverse osmosis and activated carbon filtration. Understanding what’s in your water is the first step toward protecting your home and family. Over the past several years, PFAS in drinking water has become one of the most talked-about water quality concerns in the United States. Communities across the country—including parts of Minnesota—have increased testing for these chemicals as researchers continue learning more about their potential effects on people and the environment. You may have heard PFAS described as “forever chemicals.” The nickname comes from their remarkable ability to resist breaking down naturally. Once released into the environment, many PFAS compounds can remain in soil and water for years or even decades. While you can’t completely avoid PFAS in modern life, understanding where they come from and how they enter drinking water can help you make informed decisions about protecting your household. The good news is that effective water treatment technologies are available, and professional water testing can help determine whether treatment is appropriate for your home’s water. Quick Facts About PFAS PFAS stands for: Per- and polyfluoroalkyl substances, a family of thousands of man-made chemicals. They’re called forever chemicals: Many PFAS compounds break down extremely slowly in the environment. Drinking water can be affected: PFAS may enter public water supplies and private wells through environmental contamination. Some treatment technologies work: Reverse osmosis and activated carbon filtration are recognized as effective methods for reducing many PFAS compounds in drinking water. What Are PFAS? PFAS (per- and polyfluoroalkyl substances) are a large family of synthetic chemicals that have been manufactured since the 1940s. Manufacturers developed these chemicals because they resist heat, oil, grease, stains, and water, making them useful in hundreds of commercial and consumer products. Today, scientists have identified thousands of individual PFAS compounds. Although they all share similar chemical characteristics, not every PFAS behaves exactly the same. Researchers continue studying how different PFAS interact with the environment and what levels of exposure may mean for human health. Because these chemicals resist breaking down naturally, they can accumulate in soil, groundwater, lakes, rivers, and eventually drinking water supplies. This persistence is why environmental agencies throughout the United States continue expanding monitoring and research efforts. Why Are They Called “Forever Chemicals”? Unlike many substances that naturally degrade over time, PFAS contain extremely strong carbon-fluorine bonds. These bonds make the chemicals incredibly stable, allowing many of them to remain in the environment for extended periods. Once PFAS enter groundwater, rivers, or lakes, they may continue moving through the water cycle rather than breaking down quickly. This long lifespan has led scientists, regulators, and the media to commonly refer to them as forever chemicals. It’s important to understand that “forever chemicals” is a nickname rather than a scientific classification. The term simply describes their persistence in the environment—not that every PFAS behaves identically or presents the same level of concern. Where Are PFAS Commonly Found? PFAS have been used in many everyday products for decades. While manufacturing practices continue to evolve, these chemicals have historically been found in products such as: Non-stick cookware Grease-resistant food packaging Water-resistant outdoor clothing Stain-resistant carpets and upholstery Some cosmetics and personal care products Certain firefighting foams used at airports and military facilities Because PFAS have been so widely used, they can eventually make their way into the environment through manufacturing, disposal, runoff, or historical contamination. How Do PFAS Get Into Drinking Water? PFAS can enter drinking water from several different sources. Industrial manufacturing sites, landfills, wastewater treatment facilities, and areas where firefighting foam was historically used have all been identified as potential contributors to groundwater contamination. Once these chemicals reach groundwater or surface water, they may eventually become part of municipal water systems or private wells if left untreated. The likelihood of exposure depends on many factors, including geography, local water sources, historical land use, and ongoing environmental monitoring. For Minnesota homeowners, this is one reason professional water testing has become increasingly valuable. Rather than guessing about your home’s water quality, testing provides information about what’s actually present so treatment recommendations can be based on real data. Good News: Although you can’t control every source of PFAS exposure in daily life, your home’s drinking water is one area where effective treatment options are available. Modern filtration technologies can significantly reduce many PFAS compounds when properly selected, installed, and maintained. Do Water Filters Remove PFAS? The short answer is: some do—but not all. Not every water filter is designed to reduce PFAS. Basic pitcher filters, sediment filters, and water softeners are generally not intended to remove these contaminants. That’s why choosing the right treatment technology matters. Research conducted by the U.S. Environmental Protection Agency and other organizations has shown that two of the most effective treatment methods for reducing many PFAS compounds are reverse osmosis (RO) and granular activated carbon (GAC) filtration. Reverse osmosis systems use a specialized membrane capable of removing extremely small contaminants, while activated carbon adsorbs many PFAS compounds before the water reaches your faucet. Depending on your home’s water quality and treatment goals, one solution—or a combination of technologies—may provide the best results. Can Boiling Water Remove PFAS? No. Boiling water does not remove PFAS. In fact, boiling may slightly increase the concentration of PFAS because some of the water evaporates while the chemicals remain behind. This is one of the most common misconceptions about drinking water treatment. Boiling is an effective way to kill bacteria, viruses, and other microorganisms, but PFAS are chemical contaminants—not living organisms. Because of their unique chemical structure, they are not destroyed during the boiling process. If you’re concerned about PFAS in your home’s water, the solution isn’t boiling—it’s using a treatment system that has been shown