--- product_id: 180744838 title: "iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters" brand: "ispring" price: "B/.1599" currency: PAB in_stock: true reviews_count: 13 category: "I Spring" url: https://www.desertcart.com.pa/products/180744838-ispring-ph100-alkaline-reverse-osmosis-water-filter-system-ph-remineralization store_origin: PA region: Panama --- # 100 GPD fast flow capacity 1:1 pure to waste water ratio 6-stage US-made filtration system iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters **Brand:** ispring **Price:** B/.1599 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with pure, fast, and fresh alkaline water! ## Quick Answers - **What is this?** iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters by ispring - **How much does it cost?** B/.1599 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/180744838-ispring-ph100-alkaline-reverse-osmosis-water-filter-system-ph-remineralization) ## Best For - ispring enthusiasts ## Why This Product - Trusted ispring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fast Flow, Less Waste:** 100 gallons per day with an industry-leading 1:1 pure to waste ratio—eco-friendly meets efficiency. - • **Pure Powerhouse Filtration:** Removes 99%+ of 1,000+ contaminants including lead, PFAS & chlorine for crystal-clear hydration. - • **Effortless DIY Installation:** Quick push-to-connect fittings and clear see-through housing make setup and filter changes a breeze. - • **Trusted US Quality & Support:** Built with premium US-made filters and backed by lifetime support—join thousands upgrading their home water. - • **Alkaline Boost for Better Taste:** 6-stage remineralization restores healthy minerals, balancing pH for refreshing, great-tasting water. ## Overview The iSpring PH100 is a US-made, 6-stage under-sink reverse osmosis water filtration system delivering 100 gallons per day of alkaline water with a 1:1 pure to waste ratio. It removes over 99% of contaminants including lead and PFAS, while its remineralization stage restores healthy minerals for balanced pH and superior taste. Designed for easy DIY installation with durable components and backed by lifetime support, it offers a sustainable alternative to bottled water for health-conscious professionals. ## Description Product description iSpring RO System and Replacement Filters PH100 RO100 F3US F9KUS F19K100US Review: Best Water Ever!! - After a lot of research, and questions to multiple companies, I purchase the iSpring PH100 6 stage under sink reverse osmosis filtration system, and I love it! Some of the main reasons I decided to go with iSpring are their overall reviews, company age, customer service, and the fact that they use filters readily available anywhere, nothing proprietary. Many of the other companies use their own special filters that they can change prices on whenever they feel like, without an option to get them anywhere else, or if they should go out of business, you will have a system with no filters available. When I reached out to iSpring with a few questions, Laurence got back to me right away, and was very helpful. He answered all of my questions in detail, and when I had follow up questions, he got back to me again, and always told me to reach out again anytime. I feel very confident I will have support if I should ever have any issues or questions with my system. Installation is very easily done DIY, just watch a few videos on YouTube, and look over the detailed instructions that come with the system, and you should be good to go! It does take up some of your under sink space, but not nearly as much as I anticipated. I was still able to get some of my cleaning supplies back in the space. My water quality and taste have both improved drastically, and I couldn't be happier with it. I also bought iSpring show head filters, and those have improved our shower water quality, noticable in both our hair and skin health. Overall, I am very happy with this system, the company, and all the help I received from Laurence. If you are in the fence, just do it, you don't regret it!! Review: Great RO System, great support! - Model: 100gpd, ph+ Despite being packaged well, a fitting was broken off inside one of the filters. I was able to get it out though. Customer service answered on my first call and expedited new parts. Thank you Nick! There are a few other things worth mentioning here. The included “leak stop device” is made for 1/4 inch hoses and my hardware didn’t have 3/8 to 1/4 elbows. You can find a 3/8 x 3/8 leak stop on desertcart for around $15 if you’re concerned about water flow. The included filters (4,5 & 6) also have 3/8 x 1/4 inch inlets. I ordered the filter package shown with the plus sign next to the system on desertcart and they were not the US made ones. Not sure what the difference is (other than price) as they both seem to be 1/4 inch inlets. FK-US for US made ones. Currently they are out of stock. The system seems well designed and comes partially assembled including a water saving ASO valve. Particularly like the clear housing on stage one. It allowed me to see that the installed filter was wrapped in plastic which they all are, so be aware as it’s not mentioned in the instructions. Love the filter wrench which is easy to use due to the filter housing taper. Metal mounting frame is a plus. I was trying to connect the poly tube to cpvc and had issues with different threads so wound up using compression fittings for the 3/8 inlet and pot filler lines. There is a nice bag of extra parts but mostly for 1/4 inch systems. Despite numerous connections, no leaks! Pressure is good and waste water minimal. Taste is like spring water. I would suggest someone re-evaluate the included parts and make sure needed fittings are there. Looking to save some $$ between pitcher and I/M filter cost. I’d recommend this system without any hesitation at this point. ## Features - HIGH-QUALITY US MADE FILTERS - The PH100 RO Water Filter System features top-quality US-made filters and a Dupont RO membrane for exceptional durability and performance. This advanced under-sink reverse osmosis system removes up to 99% of over 1,000 contaminants, including PFAS, lead (up to 98% removal), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more.For the ice maker water line, please search "B09MV3SNT3". - FAST FLOW & LESS WASTE WATER - 100 GPD, the alkaline Reverse Osmosis system is up to 1:1 pure to waste water ratio. Enjoy crystal clear ice cubes, coffee, baby formula – even better than most bottled water. With upgraded 3/8” fast flow input and output design, the Reverse Osmosis water filter increases flow rate that produces clean, fresh, safe water. The entire alkaline 6 stage RO system fits under a standard kitchen sink. - GREAT TASTING ALKALINE WATER - The RO membrane of the under sink Reverse Osmosis water filter system removes not only harmful pollutants but also a few helpful minerals. A standard 5 stage under sink RO system produces slightly acidic water with a pH of 7. 0 or below. This Reverse Osmosis water filter includes an additional 6 stage - an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, making water taste better. - EASY TO INSTALL & CHANGE FILTERS - Easy, Do-It-Yourself installation, typically in a couple of hours with knowledgeable technical support just a phone call away. Extra tool sets are included in the RO water filter system. Comes with clear manual and installation videos. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock, no threading pipes needed. Clear see-through 1st stage housing makes filter inspection a snap. - 100% CUSTOMER SATISFACTION - Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA USA. Features a beautiful European-designed brushed nickel all-metal faucet. For the US Made replacement reverse osmosis filters, please search “F9KUS” or “F19K100US”. This alkaline water filter system is to deliver endless bottled quality drinking water right in your home for many years to come, eliminating plastic bottles. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0844HF76N | | Best Sellers Rank | #316,298 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #655 in Under-Sink & Countertop Filtration | | Brand | iSpring | | Brand Name | iSpring | | Customer Reviews | 4.5 out of 5 stars 336 Reviews | | Included Components | housings, filters, parts and tubings, faucet, mounting bracket | | Item Type Name | Top Quality 6-Stage Under Sink Reverse Osmosis RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio with Alkaline Remineralization, US Made Filters | | Item Weight | 0.01 Ounces | | Manufacturer | iSpring Water Systems | | Manufacturer Part Number | PH100 | | Material | Acrylonitrile Butadiene Styrene (ABS), Plastic, Polyethylene (PE), Polypropylene (PP), Polystyrene | | Material Type | Acrylonitrile Butadiene Styrene (ABS), Plastic, Polyethylene (PE), Polypropylene (PP), Polystyrene | | Model Number | PH100 | | Number of Items | 1 | | UPC | 810004170216 | ## Product Details - **Brand:** iSpring - **Item Weight:** 0.01 Ounces - **Material:** Acrylonitrile Butadiene Styrene (ABS), Plastic, Polyethylene (PE), Polypropylene (PP), Polystyrene - **Number of Items:** 1 - **UPC:** 810004170216 ## Images ![iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - Image 1](https://m.media-amazon.com/images/I/71rRxWRMI8L.jpg) ![iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - Image 2](https://m.media-amazon.com/images/I/71NULD1GgbL.jpg) ![iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - Image 3](https://m.media-amazon.com/images/I/81ABVq-u+4L.jpg) ![iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - Image 4](https://m.media-amazon.com/images/I/81P7TzcqrvL.jpg) ![iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - Image 5](https://m.media-amazon.com/images/I/71OXpSN4NqL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What is the difference between rcc7ak and ph100 other than difference in a pure to waste ratio and gpd capacity?** A: The reason I went with the RO100 (brother to the PH100, except doesn't have the Alkaline final filter) was the Dow Filmtec RO membrane. I have a friend who uses a high-end RO filter for his large aquarium. He recommended the Filmtec RO membrane (this is the same membrane he has) at a much lower cost than the high-end RO filters. The RCC7AK uses the iSpring RO membrane. While it might be just as good as the Filmtec, I'm going with the name brand reputable RO membrane for about the same price. The main difference between this (PH100/RO100) and the high end RO filter is the high-end filters use 1 micron carbon filters whereas the iSpring is a 5 micron carbon filter. My friends' need is to remove all chlorine from the aquarium water and you need the 1 micron filters to do that, per my friend... I'm super satisfied with the RO100. **Q: where do you get replacement filters for ispring ph100?** A: Hello, We apologize for the inconvenience, we will have them available by late April. **Q: In one of the bags there is a piece of angled plastic and three wood screws what does this go to?** A: Hi Evan, The screws are for mounting the system in your under sink wall. Some install them in wooden walls or use a piece of wood when mounting so we include those screws as well. Please reach out to our customer service team if you need further assistance. We're always ready to help. iSpring Water Systems, LLC **Q: Hello What is the drain flow rate valve 300? (Note it is printed on the side of the valve)** A: Hi, The drain flow rate is 300 mL per minute. If you have any questions or need additional assistance, please contact us at support@123filter.com or call us at (678) 261-7611. Thanks, iSpring Water Systems, LLC ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Water Ever!! *by T***Y on April 7, 2026* After a lot of research, and questions to multiple companies, I purchase the iSpring PH100 6 stage under sink reverse osmosis filtration system, and I love it! Some of the main reasons I decided to go with iSpring are their overall reviews, company age, customer service, and the fact that they use filters readily available anywhere, nothing proprietary. Many of the other companies use their own special filters that they can change prices on whenever they feel like, without an option to get them anywhere else, or if they should go out of business, you will have a system with no filters available. When I reached out to iSpring with a few questions, Laurence got back to me right away, and was very helpful. He answered all of my questions in detail, and when I had follow up questions, he got back to me again, and always told me to reach out again anytime. I feel very confident I will have support if I should ever have any issues or questions with my system. Installation is very easily done DIY, just watch a few videos on YouTube, and look over the detailed instructions that come with the system, and you should be good to go! It does take up some of your under sink space, but not nearly as much as I anticipated. I was still able to get some of my cleaning supplies back in the space. My water quality and taste have both improved drastically, and I couldn't be happier with it. I also bought iSpring show head filters, and those have improved our shower water quality, noticable in both our hair and skin health. Overall, I am very happy with this system, the company, and all the help I received from Laurence. If you are in the fence, just do it, you don't regret it!! ### ⭐⭐⭐⭐⭐ Great RO System, great support! *by D***W on April 26, 2022* Model: 100gpd, ph+ Despite being packaged well, a fitting was broken off inside one of the filters. I was able to get it out though. Customer service answered on my first call and expedited new parts. Thank you Nick! There are a few other things worth mentioning here. The included “leak stop device” is made for 1/4 inch hoses and my hardware didn’t have 3/8 to 1/4 elbows. You can find a 3/8 x 3/8 leak stop on Amazon for around $15 if you’re concerned about water flow. The included filters (4,5 & 6) also have 3/8 x 1/4 inch inlets. I ordered the filter package shown with the plus sign next to the system on Amazon and they were not the US made ones. Not sure what the difference is (other than price) as they both seem to be 1/4 inch inlets. FK-US for US made ones. Currently they are out of stock. The system seems well designed and comes partially assembled including a water saving ASO valve. Particularly like the clear housing on stage one. It allowed me to see that the installed filter was wrapped in plastic which they all are, so be aware as it’s not mentioned in the instructions. Love the filter wrench which is easy to use due to the filter housing taper. Metal mounting frame is a plus. I was trying to connect the poly tube to cpvc and had issues with different threads so wound up using compression fittings for the 3/8 inlet and pot filler lines. There is a nice bag of extra parts but mostly for 1/4 inch systems. Despite numerous connections, no leaks! Pressure is good and waste water minimal. Taste is like spring water. I would suggest someone re-evaluate the included parts and make sure needed fittings are there. Looking to save some $$ between pitcher and I/M filter cost. I’d recommend this system without any hesitation at this point. ### ⭐⭐⭐⭐⭐ Good system *by W***. on November 26, 2024* Pro’s What sold me are all the filters are made in America. Well built unit similar to the commercial one I had at my work. Good value for the money. Comes with extra fittings, extra filters if you want to add to the order. Hose and parts needed to install pluse wrench to tighten the cartridges. Everything except the tools to install, common design to fit below a sink. Con’s Instructions are pretty good, but not exactly as well as it should be. 1) hose in instructions show a yellow tube, Blue tube that it didn’t come with. Used the white tubing for these colors that the book showed to use yellow & blue tubing. There’s a lot to read and follow and do. The steps could have been better laid out, Advise others to watch a few YouTube videos to see how others did their work. Taking the plastic wrappers off the filters is important. Make sure you do that and then replace them and tighten the cartridges. Bleeding out the air & purging the system is important. Flushing out the cartridges first & then the other filters till water clears and comes out clean, let water out of the system & them turn on the tank, flush out at least 2 tanks or more. It’s a little challenging but taking your time is always worth it as you can save time not having to chase leaks or redoing some steps. Bubbles are common Once you start using the system, but they don’t tell you that. Clears up after using it for a while. Just bubbles not sediment. ## Frequently Bought Together - iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters - iSpring ICEK Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4", 20 feet - iSpring F9K 1-Year Reverse Osmosis Water Filter Replacement Cartridge Pack w/Alkaline Remineralization Filters for 6-Stage RO Filtration Systems, Without RO Membrane --- ## 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.com.pa/products/180744838-ispring-ph100-alkaline-reverse-osmosis-water-filter-system-ph-remineralization](https://www.desertcart.com.pa/products/180744838-ispring-ph100-alkaline-reverse-osmosis-water-filter-system-ph-remineralization) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-06-06*