Best Reverse Osmosis Systems with Alkaline Remineralization – Full Comparison

These type of RO systems restore essential minerals for better balance, taste, and hydration.

Updated January 29, 2025

Clean, great-tasting water is a priority for every household, but not all filtration systems are created equal. If you’re looking for purified water that not only removes harmful contaminants but also restores beneficial minerals, a reverse osmosis (RO) system with alkaline remineralization is the way to go. These advanced filtration systems ensure that your drinking water is free from impurities while enhancing its mineral content for better taste and health benefits. In this guide, we’ll explore the best RO systems with alkaline remineralization to help you make an informed decision.

Top 5 Reverse Osmosis Systems with Alkaline Remineralization

1. Best Overall iSpring RCC7AK 6-Stage Reverse Osmosis System

Our top pick, the iSpring RCC7AK, strikes an excellent balance between affordability and performance. Its 6-stage filtration process not only removes common contaminants like chlorine, lead, and arsenic but also improves the overall taste and odor of drinking water. Homeowners looking for a reliable and cost-effective solution will find this model a worthy investment. It effectively removes contaminants while reintroducing beneficial minerals, making it a great entry-level choice for households wanting healthier water. If you're looking for a system that is both affordable and effective, we see this model as the standout option.

Also Budget-Friendly

A standout choice for those seeking an effective yet affordable water filtration system.

One of the biggest advantages of the iSpring RCC7AK is its balanced remineralization process. Unlike standard RO systems that can leave water slightly acidic, this system ensures your drinking water maintains a healthy pH level. Imagine brewing your morning coffee with properly mineralized water—this setup enhances flavor depth, making every sip smoother and richer.

What We Like:

  • 6-stage filtration with an alkaline remineralization filter
  • Removes up to 99% of contaminants
  • Restores essential minerals like calcium and magnesium
  • Produces slightly alkaline water (pH 7-8)
  • NSF certified for safety and performance

What We Don't Like:

  • Initial installation time maybe for first-timers

2. Best Low-Maintenance APEC Water Systems ROES-PH75 6-Stage Alkaline RO System

Next on our list, the APEC ROES-PH75 builds upon the strengths of the iSpring RCC7AK by offering reliable filtration with long-lasting filters. It ensures excellent water quality with an added emphasis on taste and minimal maintenance, making it a great option for those who prefer a hands-off system.

Runner-up

A reliable and low-maintenance option for those who want consistently great-tasting water.

The high-purity calcium carbonate remineralization of the APEC ROES-PH75 ensures not only better taste but also improved hydration benefits. Many users report that their drinking water has a noticeably smoother mouthfeel, making it a great option for families who prioritize water quality. If you frequently drink water straight from the tap, this system makes a tangible difference in freshness and texture.

What We Like:

  • 6-stage filtration with high-purity calcium carbonate remineralization
  • Removes up to 99% of contaminants
  • NSF-certified filters for long-lasting performance
  • Designed and assembled in the USA
  • High flow rate for faster water production

What We Don't Like:

  • The filters aren’t cheap, but they’re long-lasting
  • Installation can be time-consuming

3. Best Smart Waterdrop G3P800 Tankless Reverse Osmosis System

If space efficiency and high-tech features are your priorities, the Waterdrop G3P800 is a strong alternative to the previous models. Unlike the APEC and iSpring, this system features a sleek, tankless design, making it a great choice for modern kitchens.

Intelligent Pick

A modern, space-saving solution for tech-savvy households looking for premium filtration.

The smart faucet with real-time TDS monitoring is a game-changer. With this feature, you can instantly see the quality of your drinking water, adding an extra layer of confidence. This is particularly helpful for parents ensuring their kids get the cleanest water possible, eliminating any guesswork about when to change filters.

What We Like:

  • Tankless design with an 8-stage filtration system
  • 3:1 pure-to-drain ratio for less water waste
  • Remineralization stage to enhance pH levels
  • Smart faucet with real-time water quality monitoring
  • NSF 58 & 372 certified for safety and efficiency

What We Don't Like:

  • Higher price point compared to other systems
  • Filters may need to be replaced more frequently, depending on water quality

4. The Ultimate Guardian Express Water ROALKUV10 10-Stage RO System with UV Sterilization

For those who want an extra layer of safety, the Express Water ROALKUV10 offers something the previous models don’t: built-in UV sterilization. This makes it a fantastic choice for households concerned about bacteria and viruses in their water supply.

Extra Protection

For those who live by the saying better safe than sorry.

The UV sterilization stage is especially valuable for those using well water. If you live in an area with frequent water quality concerns, this added protection ensures peace of mind by eliminating bacteria and viruses at the final filtration stage. Imagine living in a rural area with occasional boil-water advisories—this system removes the hassle by providing a consistent, safe drinking supply.

What We Like:

  • 10-stage filtration with alkaline remineralization
  • Includes UV sterilization for extra protection against bacteria and viruses
  • Leak detection and automatic shut-off system
  • Easy DIY installation with color-coded filters

What We Don't Like:

  • 10-stage system requires more under-sink space
  • With more stages, maintenance can be more involved

5. Luxury Pick Home Master TMAFC-ERP Artesian Full Contact RO System

Rounding out our list, the Home Master TMAFC-ERP is a premium option for those seeking top-tier filtration with dual remineralization. It not only purifies water but also enhances its natural taste, making it a standout choice for those who value both quality and flavor.

Also Great

A high-end system that delivers exceptional water quality with enhanced mineral retention.

The dual remineralization process is what truly sets this system apart. By restoring beneficial minerals twice during filtration, the Home Master TMAFC-ERP ensures that the water not only tastes better but also supports better nutrient absorption—ideal for athletes or anyone looking to optimize their hydration. If you drink a lot of water daily, this system ensures that each glass is refreshing, nutritious, and never bland.

What We Like:

  • 7-stage filtration with two remineralization stages
  • Includes a permeate pump to reduce water waste
  • Enhances water pH and taste by adding calcium and magnesium twice
  • High flow rate for fast water delivery
  • NSF certified for performance and quality

What We Don't Like:

  • Higher upfront cost
  • The advanced features may make installation more complex, potentially requiring professional assistance

What to Consider

 Top Reverse Osmosis Filtration Systems with Alkaline Remineralization

Why Choose a Reverse Osmosis System with Alkaline Remineralization?

Standard RO filtration removes up to 99% of contaminants, including heavy metals, bacteria, chlorine, and fluoride. However, this process also strips away essential minerals like calcium and magnesium.

Alkaline remineralization filters address this issue by reintroducing these minerals, balancing pH levels, and improving the overall taste of the water. This makes them an ideal choice for those who want purified water without the flat taste typically associated with RO systems.

Filtration Stages and Remineralization Process

Not all RO systems include remineralization, and even those that do vary in how effectively they restore beneficial minerals. Look for systems with a dedicated remineralization stage that adds calcium and magnesium back into the water. Some models, like the Home Master TMAFC-ERP, even remineralize water twice to ensure a more natural taste and balanced pH.

Water Waste and Efficiency

Reverse osmosis is known to produce wastewater, but some systems are more efficient than others. Traditional models can waste up to 4 gallons of water for every 1 gallon purified, while high-efficiency systems like the Waterdrop G3P800 use a 3:1 pure-to-drain ratio, minimizing water waste. If conservation is important to you, check the system’s efficiency rating.

Storage Capacity vs. Tankless Design

If you have limited under-sink space, a tankless system might be a better fit. These units, such as the Waterdrop G3P800, provide water on demand without taking up unnecessary room. However, traditional RO systems with storage tanks, like the iSpring RCC7AK, ensure you always have a reserve of purified water, even when demand is high.

Installation and Maintenance

Some RO systems require professional installation, while others are designed for DIY-friendly setup. Systems like the Express Water ROALKUV10 come with color-coded filters for easy installation, but more complex setups, such as those with UV sterilization, may take extra effort. Additionally, consider how often filters need to be replaced—some models have longer-lasting filters, reducing maintenance frequency and cost.

Water Source and Contaminants

Your home’s water source plays a crucial role in choosing the right system. If you rely on municipal water, a standard RO system with remineralization should be sufficient. However, if you use well water, you may need additional UV sterilization (like in the Express Water ROALKUV10) to eliminate bacteria and viruses. Always check your local water quality report to determine what contaminants you need to filter out.

Budget and Long-Term Costs

The initial price of an RO system is just one part of the cost equation. Consider filter replacement costs, wastewater efficiency, and energy consumption. Budget-friendly options like the APEC ROES-PH75 offer a great balance between performance and affordability, while premium systems like the Home Master TMAFC-ERP come with enhanced features at a higher price point.

Final Thoughts: Which System Should You Choose?

When selecting the best reverse osmosis system with alkaline remineralization, consider your household size, water consumption, and desired features. If you need a budget-friendly yet effective system, the iSpring RCC7AK is a solid choice. If you’re looking for a high-tech, tankless solution, the Waterdrop G3P800 is a fantastic option. For those who want extra protection against bacteria and viruses, the Express Water ROALKUV10 is worth considering.

No matter which system you choose, a reverse osmosis system with alkaline remineralization ensures that you and your family enjoy clean, healthy, and great-tasting water every day.

Usencook is reader-supported. If you buy through a link, we may earn a commission. Learn more.

About the author 

Christopher Huffman

Passionate about all kinds of cooking products, tools and kitchen trends, Chris, keeps his finger on the pulse of future trends and technologies and loves to share his experience about all the kitchen-related stuff as a former chief.

You may also like