--- product_id: 320540485 title: "ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor" brand: "proone" price: "¥135457" currency: JPY in_stock: true reviews_count: 5 category: "Pro One" url: https://www.desertcart.jp/products/320540485-proone-big-gravity-water-filter-system-high-capacity-countertop-stainless store_origin: JP region: Japan --- # 3-gallon capacity No electricity needed (gravity-fed) NSF/ANSI-42 certified filtration ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor **Brand:** proone **Price:** ¥135457 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with ProOne’s sleek, sustainable water filter system! ## Quick Answers - **What is this?** ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor by proone - **How much does it cost?** ¥135457 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/320540485-proone-big-gravity-water-filter-system-high-capacity-countertop-stainless) ## Best For - proone enthusiasts ## Why This Product - Trusted proone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Durable Design:** Polished stainless steel resists rust and corrosion, elevating your countertop aesthetic while lasting for years of daily use. - • **Pure Hydration, Anytime:** 3-gallon stainless steel reservoir ensures your family stays hydrated with fresh, clean water all day long. - • **Long-Lasting Filter Life:** Each filter lasts up to 9 months with silver-infused technology to prevent bacterial growth, saving you money and hassle. - • **Effortless & Eco-Friendly:** Gravity-fed system requires zero electricity or plumbing—perfect for home, office, camping, or emergency preparedness. - • **Certified Clean, Trusted Taste:** NSF/ANSI-42 certified G2.0 filters remove contaminants and microplastics while preserving beneficial minerals for crisp, great-tasting water. ## Overview The ProOne Big+ Stainless-Steel Gravity Water Filter System is a 3-gallon, countertop gravity-fed water dispenser made from polished stainless steel. It uses NSF/ANSI-42 certified G2.0 filters that remove contaminants and microplastics while retaining beneficial minerals. The system requires no electricity, making it ideal for home, travel, camping, or emergency use. Each filter lasts up to 9 months and features silver infusion to inhibit bacterial growth, ensuring clean, great-tasting water anytime. ## Description Big+ with 1 filter Review: Outstanding water filter - with some caveats - This is a wonderful, simple mechanical water filter that lasts and doesn't come with high maintenance costs. Coming from an Aquatru (that somehow stopped working after a few months, even after I had replaced every single part), I appreciate the better value and simpler setup. The water comes out tasting pretty good, too. Overall, we prefer the Proone Big+ to the Aquatru. Here's what you should know, though: 1. The system comes with up to three filters (configurable during purchase). The tank is always the same, the point of the filters is that you'll get filtered water at greater speed. How many filters should you start with, you ask? It depends on your family size and consumption. But it's absolutely possible to just start with one, then buy more later if needed. 2. Know that this filtration system is slow. We're using a one-filter setup, and you're getting roughly one drop of water per second and filter. We're a family of seven and get all of our drinking water and most cooking water from this. I'm considering getting a second filter, but for now, we're taken care of. In order to make it work with one filter, we're ignoring the manufacturer recommendation to let the top tank empty into the bottom tank completely before refilling. The only purpose of this recommendation is to avoid overflows of the clean water tank. We haven't had any spills so far, but getting enough filtered water requires regular monitoring of the water levels in both tanks. Without the optional transparent spigot, this requires picking up the tap water tank a few times a day to check both levels. Plus, you have to remember fill up the tank at night to give the system time to filter enough water for the next morning over night. Nevertheless, considering how slowly this filter works, it is really working surprisingly well for us. 3. Before you buy the Big+, consider your tap water supply and the system's height. This filtration system just may not work in some kitchens or settings. It's about 2 feet tall, so it may not fit on some countertops, and it ideally needs its own permanent place in the kitchen (near the sink). And consider how you're going to refill it. You can't just take the tap water tank to the sink like a bucket, because it would drip and you might get the bottom dirty (which is the top of the clean water tank). Rather, you have to fill the system from the top. This works best when your system is located by the sink and you have the kind of faucet that can be extended by 2 feet. In our kitchen, the Big+ is sitting 10 ft from the sink, and we're using large thermos bottles or cook pots to refill it. Which is working fine for our purposes, but it's something you should be aware of. Review: Highly recommend! - This is a great alternative to the other popular water filter brand. The water tastes great and it works well! The only warning I would give is that it is slow to go through the filter, so fill it ahead of time as much as you can. ## Features - WATER FILTER DISPENSER: With so many chemicals and contaminants out there, everyone needs a reliable water filtration system. The Big plus is a 3-gallon stainless-steel water filtration system that can go on your countertop or in your RV. - GRAVITY FILTER FOR CLEANER WATER: Our filters help remove contaminants, and microplastics from your drinking water. Beneficial minerals like calcium are left behind for great-tasting, healthier H2O that your entire family can enjoy worry-free. - STAINLESS-STEEL COUNTERTOP WATER FILTER: This ProOne system is made from polished stainless steel. It’s easy to clean and resistant to corrosion and rust, and it will look great on your counter. Its lasting durability makes it ideal for daily use indoors or outdoors. Includes stainless steel spigot and stainless steel stand. ONE great value. - LONG-LASTING FILTERS: Each ProOne G2.0 filter will last up to 9 months with regular daily use. Our filters are infused with silver to help prevent unwanted contaminant growth, leaving you with convenient, worry-free drinking water. The ProOne G2.0 series filters carry the prestigious NSF/ANSI-42 certification and have been tested by an Certified independent lab to other NSF standards. - SURVIVAL and EMERGENCY WATER FILTER: This portable water filtration system functions without electricity. Even when you don’t have power, you can have access to clean water. This water filter will be here for you, whether you’re fighting through a natural disaster or going on a camping trip or just for daily use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08KWJP859 | | Best Sellers Rank | #142,073 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #310 in Under-Sink Water Filters | | Brand | ProOne | | Brand Name | ProOne | | Capacity | 3 Gallons | | Color | Silver | | Colour | Silver | | Customer Reviews | 4.0 out of 5 stars 101 Reviews | | Included Components | Gravity System, One 7" Filter, Stand, Mat, Gravity System Kit included | | Installation Type | Freestanding | | Installation type | Freestanding | | Manufacturer | ProOne | | Manufacturer Part Number | PO1-BIGPLUS-1POG7 | | Material | Stainless Steel | | Material Type | Stainless Steel | | Model Number | PO1-BIGPLUS-1POG7 | | Power Source | Non Electric | | Style | One Filter | | Style Name | One Filter | | UPC | 854619008779 850024056084 | | Unit Count | 1 Count | ## Product Details - **Brand:** ProOne - **Capacity:** 3 Gallons - **Colour:** Silver - **Material:** Stainless Steel - **Style:** Polished Stainless ## Images ![ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - Image 1](https://m.media-amazon.com/images/I/61E77gjvNeL.jpg) ![ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - Image 2](https://m.media-amazon.com/images/I/71i7g37u9QL.jpg) ![ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - Image 3](https://m.media-amazon.com/images/I/813iwC7tTiL.jpg) ![ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - Image 4](https://m.media-amazon.com/images/I/714B1wXSbWL.jpg) ![ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - Image 5](https://m.media-amazon.com/images/I/71KCfUURy8L.jpg) ## Questions & Answers **Q: How do I set up my ProOne gravity filter for the first time?** A: Scrub each filter under cold running water without allowing water to go inside the blue stem. After scrubbing your filters, cycle 3 batches of water through them and dump the water. Start drinking your water on the fourth cycle for the best taste. **Q: How do I prep my ProOne gravity system for travel?** A: Allow your filter elements to dry out, then wrap them in a cloth and store them in a safe place. If you store filter(s) inside the gravity system, make sure they have ample padding to prevent breakage. **Q: How often should I clean my gravity systems and filters?** A: We recommend cleaning your systems and filters at least once a month. **Q: When and how should I store my filters?** A: If you are not using your filters or system for more than 4–7 days, drain the water and air-dry the filters. Wrap the filters in a terry cloth towel and store them in a cool, dry place. Do NOT put them in a plastic bag or any enclosed container. **Q: How many filters should I use?** A: Each ProOne G2.0 filter has a general lifespan of up to 6 months with daily use. Using more filters at a time will increase their lifespan and flow rate at the same time. Using 3 filters at a time will provide the fastest flow rate. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Outstanding water filter - with some caveats *by B***M on 10 February 2024* This is a wonderful, simple mechanical water filter that lasts and doesn't come with high maintenance costs. Coming from an Aquatru (that somehow stopped working after a few months, even after I had replaced every single part), I appreciate the better value and simpler setup. The water comes out tasting pretty good, too. Overall, we prefer the Proone Big+ to the Aquatru. Here's what you should know, though: 1. The system comes with up to three filters (configurable during purchase). The tank is always the same, the point of the filters is that you'll get filtered water at greater speed. How many filters should you start with, you ask? It depends on your family size and consumption. But it's absolutely possible to just start with one, then buy more later if needed. 2. Know that this filtration system is slow. We're using a one-filter setup, and you're getting roughly one drop of water per second and filter. We're a family of seven and get all of our drinking water and most cooking water from this. I'm considering getting a second filter, but for now, we're taken care of. In order to make it work with one filter, we're ignoring the manufacturer recommendation to let the top tank empty into the bottom tank completely before refilling. The only purpose of this recommendation is to avoid overflows of the clean water tank. We haven't had any spills so far, but getting enough filtered water requires regular monitoring of the water levels in both tanks. Without the optional transparent spigot, this requires picking up the tap water tank a few times a day to check both levels. Plus, you have to remember fill up the tank at night to give the system time to filter enough water for the next morning over night. Nevertheless, considering how slowly this filter works, it is really working surprisingly well for us. 3. Before you buy the Big+, consider your tap water supply and the system's height. This filtration system just may not work in some kitchens or settings. It's about 2 feet tall, so it may not fit on some countertops, and it ideally needs its own permanent place in the kitchen (near the sink). And consider how you're going to refill it. You can't just take the tap water tank to the sink like a bucket, because it would drip and you might get the bottom dirty (which is the top of the clean water tank). Rather, you have to fill the system from the top. This works best when your system is located by the sink and you have the kind of faucet that can be extended by 2 feet. In our kitchen, the Big+ is sitting 10 ft from the sink, and we're using large thermos bottles or cook pots to refill it. Which is working fine for our purposes, but it's something you should be aware of. ### ⭐⭐⭐⭐⭐ Highly recommend! *by E***Y on 26 November 2025* This is a great alternative to the other popular water filter brand. The water tastes great and it works well! The only warning I would give is that it is slow to go through the filter, so fill it ahead of time as much as you can. ### ⭐ Musty smell in the tank *by R***A on 8 April 2026* It worked great for almost a year and then my water started to have a musty smell. I cleaned my tank several times (before and after the musty smell started to appear). I changed the filter. I tried everything but the smell is still here. The strange thing is that it started to develop slowly, while I was using the tank. The tank has never been left with stagnant water as we refill it every night, and we emptied it when we were away for a month. I even changed the filters… but no improvement! I’m writing this review only because I sent several emails to the customer support but they never came back to me! It’s been 2 month and I’m still waiting for them to reply. I regret my purchase. And I’ll probably try the Berkey tank with the pro one water filters… but it’s a waste of money :( ## Frequently Bought Together - ProOne Big+ Gravity Water Filter System - High Capacity Countertop Stainless Steel Water Filter Dispenser - IAPMO Certified to Reduce Lead, Total PFAS, Microplastics, Chlorine Taste & Odor - ProOne G-Series 7-Inch Gravity Filter Replacement 2-Pack - ProOne® & Berkey® Gravity Water Filtration Systems Compatible - NSF-42 Certified (2-Pack) - FACHIOO 7" Ceramic Fluorine Filter, Replacement Filters for ProOne® G2.0 Filters, ProOne® Countertop Gravity Water Filter System and Berkey® Gravity Water Filter System(Pack of 2) --- ## 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.jp/products/320540485-proone-big-gravity-water-filter-system-high-capacity-countertop-stainless](https://www.desertcart.jp/products/320540485-proone-big-gravity-water-filter-system-high-capacity-countertop-stainless) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-13*