--- product_id: 601630742 title: "Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified" brand: "express water" price: "R18020" currency: ZAR in_stock: true url: https://www.desertcart.co.za/products/601630742-reverse-osmosis-water-filter-system-chlorine-reduction-nsf-certified store_origin: ZA region: South Africa --- # 99.99% contaminants removal DIY installation 1-year quality guarantee Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified **Brand:** express water **Price:** R18020 **Availability:** βœ… In Stock ## Summary > πŸ’¦ Sip Smart, Live Well! Elevate your hydration game today! ## Quick Answers - **What is this?** Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified by express water - **How much does it cost?** R18020 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/601630742-reverse-osmosis-water-filter-system-chlorine-reduction-nsf-certified) ## Best For - express water enthusiasts ## Why This Product - Trusted express water brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Mineral Boost:** Enjoy alkaline water enriched with essential minerals for optimal health. - β€’ **On-Demand Expertise:** Get instant support from our water filtration specialists whenever you need it. - β€’ **Pure Water, Pure Life:** Transform your hydration experience with 99.99% contaminant removal. - β€’ **Effortless Installation:** No plumber? No problem! Set it up in minutes with our user-friendly design. - β€’ **Leak Detection Technology:** Stay worry-free with our automatic leak detection system that protects your home. ## Overview The Express Water Reverse Osmosis Water Filter System is a top-tier filtration solution that effectively removes up to 99.99% of harmful contaminants, including lead and chlorine. With its easy DIY installation, customizable features, and built-in leak detection, this NSF certified system ensures you enjoy clean, mineral-rich water without the hassle. ## Description Express Water Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified ## Features - Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system filtering up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Arsenic, and more. Alkaline Water Filter: Express Water’s Alkaline Water Filter with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to your water - Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system. No need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water - On Demand Support: Support from experts who can answer any of your questions about your new water filter - Quality Guaranteed: Rest easy with our 1-year on all Express Water Reverse Osmosis Water Systems Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture - Customizable RO Water Filter System: Express Water home water filtration systems are fully upgradable and customizable with quick connecting fittings. Try additional filtration attachments including UV Water Filter, Deionization Water Filter, and more ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Express Water | | Model Number | ROALK*** | | Color | White | | Product Dimensions | 38.1 x 12.7 x 43.18 cm; 13.74 kg | | Capacity | 4 Gallons | | Material | Plastic | | Special Features | NSF certified, Chlorine Reduction | | Item Weight | 13.7 Kilograms | ## Product Details - **Brand:** EXPRESS WATER - **Capacity:** 4 Gallons - **Included Components:** System, Filters, Tank, Faucet, Parts - **Installation Type:** Under Sink - **Material:** Plastic - **Package Information:** Tank - **Power Source:** Manual Operation - **Product Dimensions:** 15"L x 5"W x 17"H - **Purification Method:** Reverse Osmosis - **Special Feature:** Chlorine Reduction, NSF certified ## Images ![Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified - Image 1](https://m.media-amazon.com/images/I/81zTVzrdWhL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: How often do I need to replace the filters in this unit?** A: Each filter has a rated life and you'll have to calculate how much you're using to figure out. A good rule of thumb is to replace the sediment filter the most often (as it starts looking dirty, prob 1-6mos). Change the carbon filters on a schedule because chlorine is the most dangerous thing to let through to the membrane (usually 6-12mos). Chlorine will quickly damage the membrane(most expensive to replace, usually 1-2yrs). Letting hot water run through the system opens the pores on the membrane and let's contaminants through. Also, when you change carbon filters, let them flush to the drain before connecting output to membrane (will keep carbon dust from settling in the membrane pores). The easiest way to check if you need to replace the membrane is with an inexpensive ppm/tds meter, you should be in the 0-50ppm range, depending on your starting ppms of the tap (collect sample before it reaches the mineralizer to test). Once ppms start creeping up, you need to change your membrane. You will need a ph tester to determine if the mineralizer is exhausted. Each filter really has it's own rate it wears out. I've worked with reef tanks and hydroponics most of my life so I help these tips help. **Q: How much water is being wasted while filtering?** A: As I did my research this one i found was about 1 to 1 so if I remeber correctly, please dont quote this but I did by this one becuase it wasted the least amount of water per gallon i looked at. I have had it now for almost two years and still on the same filters and i use it for everything i can **Q: What’s the difference between this one at 100 and the one at 50 they are ten bucks difference? Thanks** A: The productivity rate is the difference, 100 GPD is a bit faster. **Q: How do I know when to change filter?** A: 6 month to a year it depends how many people use the filter during the day most people will change it every year ## Frequently Bought Together - Express Water Reverse Osmosis Water Filter System, Chlorine Reduction, NSF Certified - Express Water – 3 Year Reverse Osmosis System Replacement Filter Set – 23 Water Filters with 50 GPD RO Membrane, Carbon GAC, ACB, PAC Filters, Sediment SED Filters – 10 inch Size - Express Water – 2 Pack Alkaline Water Filter Replacement – Mineral, Antioxidant, pH+ – 10 Inch – Under Sink and Reverse Osmosis System --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/601630742-reverse-osmosis-water-filter-system-chlorine-reduction-nsf-certified](https://www.desertcart.co.za/products/601630742-reverse-osmosis-water-filter-system-chlorine-reduction-nsf-certified) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-05-08*