The Top 3 Best Under Sink Reverse Osmosis Systems

If you’re looking to improve the quality of water in your home, an under-sink reverse osmosis (RO) system is a fantastic investment. RO systems work by forcing water through a semipermeable membrane, effectively removing a wide range of impurities and delivering high-quality, purified water directly from your tap. For a detailed look at how reverse osmosis works, check out our Comprehensive Guide. In this article, we’ll explore the top three under-sink RO systems available, highlighting their features, pros and cons, and other key details to help you make an informed decision.

1. APEC Water Systems ROES-50

The APEC ROES-50 is a highly popular and reliable under-sink RO system known for its efficient performance and durability. It’s designed to remove up to 99% of contaminants to provide high-quality drinking water. This system utilizes a 5-stage filtration process, which includes a sediment filter, two carbon block filters, a reverse osmosis membrane, and a coconut carbon post filter, ensuring comprehensive contaminant removal. The sediment and carbon block filters are responsible for removing larger particles and chlorine, protecting the RO membrane and enhancing its lifespan.

• Filters: Lead, chlorine, fluoride, arsenic, heavy metals, bacteria
• Price: $200
• Filter Cost: $60 (annual)
• Certification(s): NSF/ANSI 58
• Capacity: 50 gallons per day
• Flow Rate: 0.5 GPM
• Cost per Gallon: $0.03
• Total Contaminants Reduced: 1,000+

Pros:

• Excellent contaminant removal efficiency
• Durable and long-lasting filters
• Easy installation with clear instructions

Cons:

• Moderate flow rate
• Requires space under the sink for storage tank

2. Home Master TMAFC-ERP Artesian Full Contact

The Home Master TMAFC-ERP is known for its innovative design that not only purifies water but also enhances its taste by adding beneficial minerals back into the water. This system includes a 7-stage filtration process, which incorporates remineralization stages twice to ensure optimal pH balance and taste. The non-electric permeate pump reduces water waste by up to 80% and increases water production, making it a highly efficient system.

• Filters: Chlorine, fluoride, heavy metals, dissolved solids, pharmaceuticals
• Price: $350
• Filter Cost: $90 (annual)
• Certification(s): NSF/ANSI 42, 53
• Capacity: 75 gallons per day
• Flow Rate: 0.75 GPM
• Cost per Gallon: $0.04
• Total Contaminants Reduced: 1,000+

Pros:

• Remineralization for improved taste
• High flow rate and capacity
• Built-in non-electric permeate pump to reduce water waste

Cons:

• Higher initial cost
• Filter replacement can be more frequent due to remineralization stage

3. iSpring RCC7AK

The iSpring RCC7AK is a comprehensive RO system that includes an alkaline filter to balance the pH and improve the taste of the water, making it a popular choice for health-conscious consumers. It features a 6-stage filtration process, including a sediment filter, two carbon block filters, a reverse osmosis membrane, a post-carbon filter, and an alkaline remineralization filter. The transparent housing allows for easy visual inspection of the filter condition, helping to ensure timely replacements.

• Filters: Lead, chlorine, fluoride, arsenic, heavy metals, bacteria, and viruses
• Price: $220
• Filter Cost: $80 (annual)
• Certification(s): NSF/ANSI 58
• Capacity: 75 gallons per day
• Flow Rate: 0.5 GPM
• Cost per Gallon: $0.03
• Total Contaminants Reduced: 1,000+

Pros:

• Includes an alkaline filter for pH balance
• Effective contaminant removal
• Transparent housing for easy filter inspection

Cons:

• Lower flow rate compared to some systems
• More complex installation resulting from the additional alkaline stage

Conclusion

Choosing the right under-sink RO system depends on your specific needs and preferences. Consider your priorities, such as taste, cost, and installation space, to select the best system for your home. Regardless of your choice, each of these systems will deliver cleaner, healthier water for you and your family. Investing in an RO system not only enhances your drinking water quality but also contributes to your overall well-being and peace of mind.

For more information on the best reverse osmosis systems, explore our recommendations for the Best Whole House Reverse Osmosis Systems of 2024