How do you maintain Your RO Water Filter?
Having clean, filtered water on demand is something many of us take for granted these days. With a reverse osmosis (RO) water filtration system installed under your sink or refrigerator, you can enjoy contaminant-free water for drinking, cooking, and more. RO systems work by forcing water through a semi-permeable membrane that traps impurities while allowing pure H2O molecules to pass through.
While RO systems are effective at removing impurities, they do require some occasional maintenance and part replacement to keep performing optimally. Neglecting minor maintenance issues can lead to reduced filter lifespan, lower water output, and ultimately water that isn’t as pure as it should be.
In this guide, we’ll go over some tips and best practices for keeping your reverse osmosis system in top shape. Following these recommendations will help maximize filter life, improve water purity, and ensure you consistently have enough filtered water on hand for your household’s needs.
Monitor Your Water Production Rate
One of the first signs that maintenance is needed is a noticeable drop in the amount of water the system is able to filter per day. RO systems produce water through a multi-stage filtration process at a relatively slow rate. The standard output is around 50-100 gallons per day for a system servicing a single household.
If you notice output dropping to lower levels, it likely means certain filter components are clogged or worn and need replacement. Output can also sink if the water supply pressure to your home drops for any reason.
To monitor your output rate, place a gallon jug under the RO faucet and time how long it takes to fill. Do this periodically under normal use conditions so you have a baseline. If it takes significantly longer than it used to, intervention is probably needed.
Inspect and Replace Pre-Filter Cartridges
Most RO systems use two or three pre-filter cartridges that trap sediment and impurities before the water reaches the RO membrane. These are normally made of porous polypropylene or carbon block media. As they collect particles over time, water flow becomes obstructed.
The pre-filters are meant to be replaced every 6-12 months in most systems. Check the manufacturer’s instructions for your particular model. Visually inspect the filters at least annually to check for noticeable clogging. Replace on schedule even if they look clean. A slowdown at this stage hinders the entire system.
Change Out the RO Membrane
The heart of the system is the RO membrane filter. This contains a delicate, spiral-wound membrane that selectively allows water molecules to pass while blocking contaminants. Normal lifespan is 2-5 years depending on water conditions and usage levels.
As the membrane ages, its pores will slowly clog, reducing water production. Annual testing of your water against purity standards is the best way to know if the membrane needs replacement. TDS (total dissolved solids) meters are handy for this.
You can also have your water tested professionally. Replace the membrane if purity drops noticeably. A major drop in output rate can also signal it's time for a new membrane.
Replace the Carbon Post-Filter
After water passes through the RO membrane, it flows through a final carbon post-filter for a last polishing. The activated carbon removes any remaining tastes, odors, or micro-contaminants. This cartridge should be replaced every 6-12 months.
A telltale sign that replacement is due is a noticeable unpleasant taste or odor from your RO water. The activated carbon's absorption capacity gets used up over time. Periodic replacement keeps water taste and purity at its peak.
Sanitize the Storage Tank
An automatic shut-off valve stops the RO system when the storage tank is full. Water sits in this tank until needed. On occasion, bacteria and microbes can accumulate in the tank and contaminate purified water.
To prevent this, sanitize the storage tank by filling it with a sanitizing bleach solution. The standard recipe is 2 tbsp bleach per gallon of tank capacity. Let it soak for 2-4 hours then flush thoroughly. Do this every 6-12 months based on your water conditions.
Rinse and Flush the Membrane After Use
To maximize membrane life, always make it a habit to rinse and flush the RO system after using water. Letting water sit stagnates and promotes bacterial growth. This is especially important if you go out of town for several days.
Run the faucet for a few minutes when back to flush out old water. Some systems have an automatic flush setting. This feature can be adjusted to flush on a schedule if desired.
Replace the Faucet Filter Periodically
Many RO systems include a final faucet-mount filter. This adds one last polishing step at point of use. It improves taste and catches any microbes in the faucet or lines. Replace these inexpensive filters every 6-12 months. Keeping one on hand makes it easy to quickly swap a fresh one on schedule.
Monitor Usage and Pressure Fluctuations
Output and filter lifespan are also affected by overall water usage through the system. The more you use purified water in cooking, drinking, etc., the faster filters need replacing. Very high or very low usage extremes can impact lifespan.
Water pressure also plays a role. RO systems require adequate feed water pressure—typically 40 psi or above. Pressure drops from other uses in the home can slow production rate. Be aware of periods of heavy water demand that may affect RO output.
Keep Detailed Records
To stay on track with maintenance, keep records of when filters and membrane are replaced. Note output rates periodically to identify trends. Setting reminders on your phone or calendar can help remember when to swap filters, sanitize the tank, and perform other upkeep.
Watch for Leaks
On very infrequent occasions, leaks can develop around filters or connections. This is obvious if you find water on the floor under the system. Leaks reduce output and allow contaminants in. Immediately correct any leaks found by tightening connections or replacing damaged parts like o-rings.
Conclusion
By following these maintenance tips, your reverse osmosis system should continue providing a steady supply of contaminant-free water for years to come. Periodically replacing filters, sanitizing the tank, and watching for leaks or changes in performance are the keys to longevity and effectiveness. With just a little proactive care, your RO will remain one of the most useful appliances in your home. The small effort is well worth it for the enhanced health, flavor, and convenience of having delicious purified water always on tap!
Netsol Water is Greater Noida-based leading water & wastewater treatment plant manufacturer. We are industry's most demanding company based on client review and work quality. We are known as best commercial RO plant manufacturers, industrial RO plant manufacturer, sewage treatment plant manufacturer, Water Softener Plant Manufacturers and effluent treatment plant manufacturers. Apart from this 24x7 customer support is our USP. Call on +91-9650608473, or write us at enquiry@netsolwater.com for any support, inquiry or product-purchase related query.
