RO-PH90 – Ultimate Alkaline Mineral 90 GPD 6-Stage High Output Reverse Osmosis Drinking Water System

  • Top Tier Alkaline Pure Drinking Water System

  • Refreshing, Crisp Taste Superior to Bottled Water

  • 100% US Made High Purity Calcium Carbonate to Safely Raise pH

  • Systems built with Super Long Lasting US MADE Filters Made in USA

  • The Most Durable System Lasts for Many Years

  • Lifetime Support by Team of WQA Certified Water Specialist

  • $305.96 Final Price With 10% OFF Coupon
    Enter {RW1019} At Checkout.

  • Listed Price:$460.00
  • Total Saving:$120.05
  • Sales Price:$339.95

Options & Upgrades

Easily connect your RO system to any fridge or ice-make
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Designer Faucet Upgrade
Different Styles/Colors option »

High capacity water holding tank is great for larger families and homes
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Hand-held water meter tests water quality & system performance. Save $20 OFF. Learn More »

For additional protection against microbial water contamination.
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Stages 1-3 and 6 replacement filters for 2nd year service. Save $14 OFF. Learn More »

If you are referred by our customer, please enter their name here
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*If need voltage of 100v or 220v, please contact APEC sales directly at 1800-880-4808.




      Healthy, Great Tasting, Ultra-Pure Drinking Water

      Right from your kitchen tap! This complete water filter will produce an unlimited supply of bottled-quality drinking water while removing any chlorine, unpleasant tastes, odors, and up to 99% of harmful contaminants to produce clean and refreshing water that everyone will enjoy. This will improve the flavor of coffee, tea, and ice cubes—everything tastes better with RO water!

      WQA Certified

      WQA Certified to the Highest Quality & Performance

      Our reverse osmosis system have been tested and proven to deliver the finest filtration and durability. This certification establishes that systems are assembled soundly from safe materials and guarantee the highest contaminant rejection. Your health will never be compromised with an RO-90 system.

      System Rejection

      pH+ Alkaline Re-Mineralizing Calcium Filter

      Add 100% US-Made high-purity calcium carbonate to effectively raise pH in the water for those who desire alkaline water.

      Clean Water

      Highest Quality & Competitive Performance to Match

      Assembled with the same expertise as our most popular RO-90 systems, RO-PH90 offers the reassurance of premium quality components and the highest level of contaminant rejection. Enjoy worry-free comfort knowing your health will never be compromised with our RO-PH90 system.

      System Rejection

      20 Years Experience. Designed, Engineered and Assembled In The USA

      APEC has 20 years of successful experience in creating the finest water filtration systems from our California facility. All APEC reverse osmosis systems are designed, engineered, assembled, and tested in-house using high-quality parts to ensure that a trouble-free system arrives at your door. Our superior engineering, design expertise, and attention to details have earned our products the distinction of being the most durable water-filtration systems on the market.

      Proudly Built in USA


      Super Capacity Premium Filters for 2X Longer Life

      RO-PH90 uses only top-rated, US-made filters, like the industry leader Dow Filmtec membrane, resulting in complete water purification not available from basic filters. Our super-capacity filters deliver 2X the capacity AND service life of other brands, while the membrane provides the highest rejection capability and durability. Enjoy the longest-lasting performance and low maintenance with these industry-leading filters!

      2X Super Capacity Filters


      Stringent Quality Control Process = Peace of Mind

      systems are put through a rigorous multi-point quality control process to eliminate even the slightest component imperfections. This system will provide you with the ultimate satisfaction and peace of mind with reliable operation that is free from noises, leaks, and clogs.

      Attention to Details


      Easy Do-it-yourself Installation & Maintenance

      RO-PH90 is made with simple installation and maintenance in mind. It is equipped with John Guest quick-connection fittings and colored tubing, which makes system installation and maintenance extremely fast and easy.


      Fully Automated

      Fully automated system will effectively treat tap, well, and hard water at variable water pressures with extreme pH and hardness levels.

      Universal Standard

      System uses industry standard parts and components, which makes finding and replacing any part or filters on the unit simple and cost-effective.

      Easy Installation

      Easy to install and low maintenance: save homeowners up to $1,029 or more a year + time and hassle from buying costly, heavy bottled water

      Fully Upgradeable

      Fully scalable and upgradeable making it a great investment for a growing family

      Referral Program

      Referral program pays big, so you can have “free drinking water” forever!

      Click Here to Learn More...

    Performance & Specification

      High Performance 6 Stage System Components:

      1st stage

      High-Grade high-capacity polypropylene sediment filter —removes dust, particles, and rust. Protects and extends the life of the membrane and system. US Made. (order info.)

      2nd Stage

      Premium Extruded Carbon Block —gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water. US Made. (order info.)

      3rd Stage

      Premium Extruded Carbon Block —gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water. US Made. (order info.)

      4th Stage

      Select FILMTEC (Dow Chemical) High Rejection TFC reverse osmosis membrane. Removes up to 99% of total dissolved solids (TDS) and contaminants such as arsenic, lead, fluoride, chromium, radium, bacteria, viruses and much more. US Made. (order info.)

      5th Stage

      Advanced Coconut Shell Refining Carbon 10" — TCR (Total Contamination Removal) filter removes any possible residual taste from the tank. US Made. (order info.)

      6th Stage

      Calcite Acidic Water Neutralizer 10" - adds calcium carbonate to increase water alkalinity. (order info.)

      RO System Components

      Standard with system: John Guest Quick-Connect fittings; stainless steel check valve; clog-free flow restrictor; 5 feet of food grade tubing & versatile 1/2” to 3/8” feed water adapters. High quality lead-free faucet & 4 gallon pressurized tank also included.

      Complete Installation Hardware

      Wrench, tank ball valve, feed water valve, drain saddle, inserts, Teflon tape, and manuals. Ice-maker kit option is available at checkout


      Specifications & Dimensions:

      System Capacity:

      90 gallons per day @ 60 psi, 75 gallons/day @50 psi and 77 deg F

      Tank Size:

      4 gallons. 14 gallons optional

      Tank Dimensions:

      11" x 11" x 15" (4 gal tank). 16" x 16" x 25" (14 gal tank)

      Feed Water Pressure:

      40-85 psi

      Feed Water Temperature:

      40-100 deg F

      Max Total Dissolved Solids:

      2000 ppm

      System Dimensions:

      16"w x 5.25"d x 17.5"h

      Feed Water pH:

      2.0 -11.0

      System Package Weight:

      27 lbs
    Product's Review
      1. RO-PH90 1-Year Review Review by Knight

        Our well water is acidic and contains iron and iron bacteria. Before purchasing this unit, I installed a spin-down filter with a 74-micron stainless screen to remove suspended particles. I tried several whole-house filters in the next stage, but they would only last 30-45 days before the poor taste returned. I considered an expensive green sand system with carbon filters and chemical pumps, but the quote was in the thousands and the ongoing maintenance was expensive and not DIY. That is when I discovered the APEC Water solution.

        I was able to connect the unit under my kitchen sink and plumb the output to the refrigerator water supply. The quality of the unit is outstanding. Everything is USA made, including the filters. I knew that I could trust the water quality, and I was right. We enjoy fresh, clean, polished, and PH-balanced drinking water and ice. This water makes the best coffee and tea. I just completed my 1-year filter change, and it was a trivial task.

        Thank you, APEC Water! (Posted on 3/25/2018)

      2. Count on Quality and Performance! Review by Jim Fields

        This is our 3rd purchase of a reverse osmosis system from APEC; we have installed them in all 3 of our homes over the past 25 years. I have to tell you this is the best reverse osmosis system on the market for our residential purpose/use. It is high out put and services our kitchen sink and automatic ice cube maker. The "taste" lives up to the advertising; it is simply the best! (Posted on 11/20/2017)

      3. Excellent Purchase Review by Deb

        We purchased the ROPH-90 system a little over a year ago. Together with our plumber, we hooked the system up to (1) the faucet supplied with the system which was easily mounted next to the kitchen sink faucet (2) our refrigerator water/ice dispenser (3) our steam humidifier. I use PH strips and the TDS meter sold by APEC to monitor the water. Our water tastes phenomenally better than it ever has and for the first time ever, I did not have to clean ANY sediment of our steam humidifier coils (note - the humidifier is fed off of the 5th not 6th stage whereas the sink and fridge are fed off of the 6th stage). I just did the annual filter replacement of stages 1 - 3 and it was a BREEZE. The customer service provided by APEC has been A+ - I called to get questions answered when trying to choose a system, I called to get some clarification during the installation, and I called when ordering the replacement filters to get some questions answered. All calls were handled by extremely knowledgeable people who provided incredible customer service. Owning this system has truly been a pleasure. Thank you APEC!!! (Posted on 2/4/2017)

      4. extremely impressed Review by Diana

        With my well water having lower pH and bad water, I had to find a good drinking system that can enhance pH along with removing the impurities. I chose this unit after spending few weeks after researching because of APEC great reputation and they are highly respected US manufacturer for over 18 years. After receiving this system, I am extremely impressed at the packaging and the system itself. Every part feels high grade and I just have not seeing a system this well built in a very long time. (Posted on 6/4/2016)

      5. Best investment I've made in a long time Review by Anderson

        I bought and installed an inline TDS meter to the system. The water reading before going into the system is 250 ppm and 5 ppm before the last PH filter that adds calcium. I figure installing the TDS memter there is a better way to tell when to change the membrane. I also tested the meter before installing it by putting the sensor in a glass of the RO water and it read 3 ppm, so the PH filter must be removing something while adding calcium. All I know is the water tastes great. Best investment I've made in a long time. (Posted on 7/14/2015)

      6. Taste Great! Review by Robert Thompson

        The water taste great and all filters are made in USA which we love. (Posted on 3/3/2015)

      7. Just what we need for our office Review by Allen P

        We purchased the system with the upgraded 14 gallon tank and installed it in our office kitchen. Everyone loves the taste of the water and it was able to support our demand without any issues. Now the coffee and tea taste like what they should taste like. (Posted on 2/18/2015)

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