--- product_id: 41770829 title: "- RO-PH90, 6-Stage Alkaline Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 90 GPD, Reduces 99% of Impurities" brand: "apec water" price: "R17306" currency: ZAR in_stock: true reviews_count: 8 category: "Apec Water" url: https://www.desertcart.co.za/products/41770829-ro-ph90-6-stage-alkaline-under-sink-reverse-osmosis-water store_origin: ZA region: South Africa --- # 90 GPD ultra-pure flow 6-stage alkaline pH+ remineralization WQA certified 1000+ impurity removal - RO-PH90, 6-Stage Alkaline Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 90 GPD, Reduces 99% of Impurities **Brand:** apec water **Price:** R17306 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with the ultimate under-sink RO system! ## Quick Answers - **What is this?** - RO-PH90, 6-Stage Alkaline Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 90 GPD, Reduces 99% of Impurities by apec water - **How much does it cost?** R17306 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/41770829-ro-ph90-6-stage-alkaline-under-sink-reverse-osmosis-water) ## Best For - apec water enthusiasts ## Why This Product - Trusted apec water brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted with 100% US-made filters and premium metal faucet designed to endure decades of daily use. - • **Certified Clean:** WQA-tested to eliminate over 1,000 contaminants including lead, arsenic, and VOCs for peace of mind. - • **Pure Powerhouse:** Delivers up to 90 gallons of crystal-clear, alkaline water daily—perfect for your busy lifestyle. - • **Alkaline Advantage:** Boosts your water’s pH naturally with US-made calcium carbonate for that fresh spring taste. - • **Effortless Setup & Support:** Quick-connect fittings and lifetime US-based support make installation and maintenance hassle-free. ## Overview The APEC WATER RO-PH90 is a premium 6-stage reverse osmosis water filtration system that removes over 1,000 impurities while enhancing water with alkaline pH remineralization. Certified by WQA, it delivers up to 90 gallons per day of fresh, clean, great-tasting water through a durable, lead-free metal faucet. Designed for longevity with US-made components and backed by lifetime support, it’s the smart choice for health-conscious professionals seeking superior water quality at home. ## Description Enjoy unlimited ultra-fresh, healthy, great tasting drinking water straight from your kitchen tap for cooking and making delicious coffee, tea & ice. Review: Look no further at this price point! - This is my second RO-PH90 system. Simply one of the best systems on the market, in my opinion. Uses genuine Dow filmtec reverse osmosis membrane. As anyone familiar with RO knows, filmtec membranes are the gold standard and rank among the elite in rejection rates. This is not your generic RO bought in a hardware store, although some large chains carry it. Input TDS = ~225 ppm, output TDS = ~15-20ppm. Does the job. Have not tested PH yet. Water tastes great as it does with my first system. Change your pre filters once per year or at the recommended %TDS interval and expect this RO membrane to last its full schedule of 3-5 years. This is very important. Incoming water pressure must be at least 50psi in my opinion, for this system to operate as intended. At 75psi, outgoing pressure is like a dream, even with 1/4'' stock tubing. Fills glasses quickly. Consider the 3/8" output upgrade if your input pressure hovers at 50psi as it did with my first unit. RO systems thrive on incoming water pressure, this is the most important aspect of setup! Do not skip! Simple setup as usual, although this time I needed a booster pump, incoming was 40psi at best. Remember, it can fluctuate significantly during high demand/peak times. Plan a few hours for someone not so mechanically inclined. John Guest quick connect fittings are painless. Manual is very thorough, follow each step carefully and no problems should arise. If they do, customer support is USA based and very helpful. Download and read the manual available on their website before purchasing so you know what items and skill level are required. Anyone with a few tools and willful attitude will have zero problems. Easily found an Aquatec CDP6800 kit on Ebay for $108 that is perfect for this system. Came with all needed lines, pressure gauge, shutoff solenoid, pressure switch, pump and transformer. Make sure to have a sediment filter before the pump if you want it to last. Of course, APEC also offers a version pre outfitted with either permeate or booster pump although you will need your own gauge I believe. If planning on wanting 3/8" output upgrade for PH model, please go directly though APEC to purchase with it pre installed. Do not buy the output kit here on desertcart and expect it to fit the PH filter on your unit, it will not. It is for 5 stage only. You would then have to buy a 3/8" PH filter from APEC, about $40. Save yourself some time and money going directly through APEC for the upgrade route. Not much else to say, please READ the manual and you will not have to think about this system but a few times a year for TDS tests and scheduled filter changes. Good luck! Review: Excellent water, easy setup with a minor hiccup - Installation was easy until I realized I needed a special adapter for my dedicated drinking line. I got help at Home Depot and it worked perfectly. The water tastes clean, smooth, and refreshing. ## Features - SUPREME QUALITY: Built with super long-lasting 100% US MADE filters, RO-PH90 is the most durable system in the industry that lasts for decades - WQA TESTED and CERTIFIED: Effectively remove up to 99% of impurities such as chlorine, taste, odor, VOCs, as well as harmful fluoride, arsenic, lead, heavy metals and 1000 plus impurities. Provides unlimited ultra-fresh, clean, great tasting water right at home - PH ENHANCED: Add 100% US-Made high-purity calcium carbonate to effectively raise pH in the water for those who desire alkaline water - LIFETIME SUPPORT and SYSTEM WARRANTY: Provides peace of mind with our lifetime support by certified WQA water specialist. 2 years extended manufacturer warranty available upon registration - EQUIPPED WITH PREMIUM FAUCET and PARTS: Comes with 100% metal, 100% lead-free luxury designer faucet, plus JG premium grade tubing to provide safe, impurity-free pure water. The original, top-notch JG Quick Connect fittings for easy and secure leak-seal ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00SGGT14Q | | Best Sellers Rank | #24,819 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Whole House Water Treatment Systems | | Brand | APEC WATER | | Brand Name | APEC WATER | | Capacity | 4 Gallons | | Container Type | Tube | | Customer Reviews | 4.5 out of 5 stars 901 Reviews | | Global Trade Identification Number | 00854961005846 | | Included Components | Reverse Osmosis System, Tank, Filters, Owners Manual | | Installation Type | Under Sink | | Item Dimensions L x W x H | 15"L x 7"W x 18"H | | Item Type Name | Top Tier Supreme Certified Alkaline Mineral pH+ High Flow 90 GPD 6-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (ULTIMATE RO-PH90) | | Manufacture Year | 2023 | | Manufacturer | APEC Water Systems | | Material | Polypropylene | | Material Type | Polypropylene | | Maximum Flow Rate | 0.06 Gallons Per Minute | | Model Name | RO-PH90 | | Model Number | RO-PH90 | | Other Special Features of the Product | Reduce TDS | | Part Number | RO-PH90 | | Power Source | Manual (Water Pressure) | | Product Dimensions | 15"L x 7"W x 18"H | | Purification Method | Reverse Osmosis | | Special Feature | Reduce TDS | | Supported Water TDS Level Maximum (PPM) | 2000 | | UPC | 854961005846 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 360 Degrees Fahrenheit | ## Product Details - **Brand:** APEC WATER - **Capacity:** 4 Gallons - **Included Components:** Reverse Osmosis System, Tank, Filters, Owners Manual - **Installation Type:** Under Sink - **Material:** Polypropylene - **Package Information:** Tube - **Power Source:** Manual (Water Pressure) - **Product Dimensions:** 15"L x 7"W x 18"H - **Purification Method:** Reverse Osmosis - **Special Feature:** Reduce TDS ## Images ![- RO-PH90, 6-Stage Alkaline Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 90 GPD, Reduces 99% of Impurities - Image 1](https://m.media-amazon.com/images/I/7128sfUEF-L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Why does this product have a prop 65 warning?** A: A SS pressure vessel is not at all needed. Prop 65 is literally plastered over anything and everything in CA. These RO systems have to pass many certifications and are legal under the uniform plumbing code, the CA plumbing code as well as the Los Angeles plumbing code. Leaching is not an issue. Signed, master plumber and water treatment expert. **Q: Hi All, for the folks who have been using this system for a while , is there any concern for the tank being a source of bacterial contamination?** A: While there would be no chlorine down stream of the RO cartridge, the water in tank should be too low in nutrients/food for any significant bacterial growth **Q: Do I need any parts to connect it to my fridge water dispenser (ice maker)? Im connecting it to the fridge only not the sink.** A: I have connected to both. Ice is not completely clear, but sediment does not settle out of the ice while melting in a clear glass of water! You might need parts. Don't know your water line size. Consider replacing your existing water filter on your ice maker while your doing this. I did not need parts. **Q: Is this system nsf certified?** A: Hello, this system is certified by the Water Quality Association, which uses the same standards as the NSF. If you need any help or assistance, feel free to give us a call we are happy to help! Best Regards, APEC Support Team 800-880-4808. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Look no further at this price point! *by D***D on November 11, 2017* This is my second RO-PH90 system. Simply one of the best systems on the market, in my opinion. Uses genuine Dow filmtec reverse osmosis membrane. As anyone familiar with RO knows, filmtec membranes are the gold standard and rank among the elite in rejection rates. This is not your generic RO bought in a hardware store, although some large chains carry it. Input TDS = ~225 ppm, output TDS = ~15-20ppm. Does the job. Have not tested PH yet. Water tastes great as it does with my first system. Change your pre filters once per year or at the recommended %TDS interval and expect this RO membrane to last its full schedule of 3-5 years. This is very important. Incoming water pressure must be at least 50psi in my opinion, for this system to operate as intended. At 75psi, outgoing pressure is like a dream, even with 1/4'' stock tubing. Fills glasses quickly. Consider the 3/8" output upgrade if your input pressure hovers at 50psi as it did with my first unit. RO systems thrive on incoming water pressure, this is the most important aspect of setup! Do not skip! Simple setup as usual, although this time I needed a booster pump, incoming was 40psi at best. Remember, it can fluctuate significantly during high demand/peak times. Plan a few hours for someone not so mechanically inclined. John Guest quick connect fittings are painless. Manual is very thorough, follow each step carefully and no problems should arise. If they do, customer support is USA based and very helpful. Download and read the manual available on their website before purchasing so you know what items and skill level are required. Anyone with a few tools and willful attitude will have zero problems. Easily found an Aquatec CDP6800 kit on Ebay for $108 that is perfect for this system. Came with all needed lines, pressure gauge, shutoff solenoid, pressure switch, pump and transformer. Make sure to have a sediment filter before the pump if you want it to last. Of course, APEC also offers a version pre outfitted with either permeate or booster pump although you will need your own gauge I believe. If planning on wanting 3/8" output upgrade for PH model, please go directly though APEC to purchase with it pre installed. Do not buy the output kit here on Amazon and expect it to fit the PH filter on your unit, it will not. It is for 5 stage only. You would then have to buy a 3/8" PH filter from APEC, about $40. Save yourself some time and money going directly through APEC for the upgrade route. Not much else to say, please READ the manual and you will not have to think about this system but a few times a year for TDS tests and scheduled filter changes. Good luck! ### ⭐⭐⭐⭐⭐ Excellent water, easy setup with a minor hiccup *by G***F on March 9, 2026* Installation was easy until I realized I needed a special adapter for my dedicated drinking line. I got help at Home Depot and it worked perfectly. The water tastes clean, smooth, and refreshing. ### ⭐⭐⭐⭐⭐ arrived on time, easy to install tastes great after 2 weeks *by M***E on October 26, 2020* I have had an RO system for 20 years (Everpure ROM) and it finally got to the point where it was cheaper to buy a new system from APEC than a complete set of filters/membrane from Everypure (Pentek). The system arrived a day early with very clear installation instructions. To be fair my installation was easier because i had the feed line and waste line already installed from my prior system but it went together easily, seems high quality and started producing filtered water right away. this system produces water faster than my old system filling up the 4 gallon tank in under 3 hours - it thrives on my house water pressure of 60 psi. i like the taste of the PH increasing filter lets see what it does to my electric kettle, ice maker and coffee maker the only installation glitch was the o-ring on one of the carbon block housings. it was leaking and even after several re-seating and application of good grade silicone it weeps a tiny bit. The o-ring was slightly too large and never fit tightly in its groove. not a bit enough issue to knock down to 4 stars. will update my review if any problems appear in the months ahead but so far it appears to be good value. ## Frequently Bought Together - APEC Water Systems Top Tier Supreme Certified Alkaline Mineral pH+ High Flow 90 GPD 6-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (Ultimate RO-PH90) - APEC Water Systems ICEMAKER-KIT-RO-1-4 Ice Maker Kit for Reverse Osmosis Systems, Refrigerator & Water Filters - APEC TDS Meter Digital Water Quality TDS Test Kit Meter with Carrying Case, 0 to 1999 ppm Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/41770829-ro-ph90-6-stage-alkaline-under-sink-reverse-osmosis-water](https://www.desertcart.co.za/products/41770829-ro-ph90-6-stage-alkaline-under-sink-reverse-osmosis-water) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-10*