iSpring RCC7P, 75 GPD Reverse Osmosis System with Pump, 5-Stage Boosted Performance Under Sink RO Water Filtration System with Patented Top-Mounted Faucet Design for Easy Installation

My primary goal for this RO system was to get water as pure as possible (as low of a TDS reading as possible), for the uses of: humidifiers, watering rare plants, medical uses, drinking, cooking.I was previously buying (and sometimes making) distilled water for my humidifiers and plants, which was extremely expensive and a real pain. Distilled water has TDS of 0. My tap water already was excellent at a TDS of about 27, but with this RO system I was able to achieve an output TDS of just 2. That's ridiculously low, almost as pure as distilled water. This was exactly what I had hoped for. I believe it took a few days for the TDS to drop to that level, perhaps due to remnant particulate matter exiting the filter canisters (that's my theory).I was drinking and cooking with tap water before, but now I use RO. It tastes so clean, no chemicals, no odors, like a mountain stream, and it's nice to know there are less toxic chemicals and pathogens in it vs out of the tap.I was worried after reading a few reviews of flood damage due to a leaking system, but when I realized the kit now comes with a "leak stop valve" it put my mind at ease a bit. This valve will sense water leaks and then shuts off the water coming into the RO unit, thus limiting the damage / amount of flooding. One of the photos on this review shows the leak stop valve - it's a gray piece of plastic with the red supply hoses going in and out of it. Note that my leak stop valve did not have any locking clips in the bag with it, but iSpring does include a bag with extra parts, so I simply took two clips from the extra parts bag.Despite the leak stop valve, I went a step further. I have a Ring security system. I purchased a Ring flood sensor and placed it under the sink next to the RO system, so I will be notified if there is a leak. The sensor is shown in one of the attached photos (it's the white disc shaped thing).I got the system with the booster pump, and with how clean my tap water already is, it flows super fast through the system. It will completely fill an empty tank in about 40 minutes. I can get as many gallons of RO water per day as I can possibly use for every purpose. Now I have essentially unlimited pure water for all of my uses, and don't have to spend money and time with distilled water. The pump is pretty much silent. I can hear it click on and off but that's about it. By the way, I did not have an electrical outlet below the sink, so I drilled a hole through the side of the cabinet near the back, and ran a small extension cord from the pump up to an outlet on the wall above my washing machine.I purchased an additional ispring tank to expand storage capacity, and set up a Tee fitting which splits off to both tanks, with ball valves in each supply line. See attached photos. I can turn off and remove one, or both, tanks if needed for maintenance / access under the sink, replacement, etc. If I turn off and remove just one, the other tank stays functional.Figuring out the layout / position of the unit, hoses, tank, etc was probably one of the more challenging aspects of this project. It took some planning, thinking, and measuring, and I was extra cautious every time I made a cut in the 1/4" hoses (measure twice, cut once, as the saying goes). By the way, pro tip: Use PVC cutters to get a nice clean 90 degree flat cut on the 1/4" hose (assuming you have good PVC cutters with a flat/square jaw under the blade).I installed the waste water drain line several inches above the p-trap on the sink drain. I must have done it just right because I cannot hear the draining water at all. Make sure to put the drain line above, and on the clean side of, the p-trap (not below it on the back where the sewer gas is).The included faucet is nice. I had to drill a hole in my utility sink, which is some sort of composite material. I used a HIGH QUALITY hole saw blade (Bosch brand) and use some cutting oil on the blade and sink to lubricate it. Took it slow and kept clearing away the chaff and putting more oil, and the hole came out perfect. Since my sink is very deep, when I fill my gallon jugs with water, I slide a vinyl hose over the tip of the RO faucet and have the other end of the hose in the water jug. Then I can walk away for a minute while the jug fills.There were a few minor negative things I will point out.The first issue, the instruction manual which came in the box, and the video I found on YouTube, did not have exactly matching instructions. There were a few differences in some of the steps (I don't recall exactly what they were as this was some time ago). I reviewed it all a few times as I went and then did what made the most sense to me for my particular situation.The second issue, there is not really any way to know how tight to make the canisters onto the housing with the wrench. You just have to guess and make it very firm but not too firm. It would be nice if there was some better way, for example a marking on the housing and canister which line up when they are precisely connected.The third issue, due to how the system was set up and positioned under my sink and how everything was during installation, it was basically impossible for me to flush the canisters using the described methods. I had to unhook most of the system, pull it out, then luckily I had a spare piece of 1/4" hose from something else, which I attached to the part which lets out the flushed water, and aimed that into a bucket. I don't recall the details exactly but I do know it was slightly confusing and a bit of a hassle. There may have been other issues but nothing is sticking out in my mind right now.As noted by another reviewer, it was slightly confusing at first to understand how the storage tank line works, since the water goes in and out of the same line. It took me a bit to register that.One other thing which isn't a deal breaker but is a bummer: Filling gallon jugs takes a while, and I often fill three at a time. It takes about a minute and a half per gallon. I wish there was a way to get the water out much faster. I use a lot of water for humidifiers and plants, and it's a real hassle to slowly fill up the jugs and transfer the water every day. It would be awesome if there was a tank with a larger outlet valve which could be used with a larger diameter hose, maybe with a smaller outlet on the side to go to the RO faucet, and the larger diameter outlet could run a utility hose or something.Another positive: The customer service was great. I usually received a reply in less than 24 hours. The info was clear and helpful. They were able to answer all of my questions and addressed my concerns, and went the extra mile on a few small things.Even though the kit comes with extra gaskets, I purchased additional extras, as well as a multiple year supply of filters.Use a TDS meter to periodically test your tap water and RO water to keep an eye on fluctuations. If the RO water goes up in TDS significantly, there may be an issue, or if it goes up slowly over time you may need to do some maintenance.A tip for using a TDS meter: Make sure you have distilled water, with a TDS of 0, to rinse off the TDS meter probe after testing each water source (for example after testing tap water, before testing RO water), and ESPECIALLY after the final test before storing the meter. You need TDS 0 water to rinse the probe off so it doesn't skew future readings by leaving impurities on the sensors.

Excellent Product and Outstanding Customer SupportFirst of all, I’d like to express my sincere gratitude to Sean for his exceptional support in resolving an issue I had with this amazing product.I purchased the iSpring 5-Stage Countertop Reverse Osmosis Water Dispenser from Amazon in October 2023. This is truly an excellent water dispenser—it offers a variety of convenient features that make it ideal for any household. The filter is easy to replace, and having it right on the kitchen counter makes preparing coffee, tea, or other drinks much more convenient and enjoyable.I had been using and enjoying it daily until, unfortunately, it suddenly stopped working. Despite following all the troubleshooting steps in the manual, the unit had no power.I reached out to the company, which is based in Georgia, to ask if they had any technicians in California who could take a look at the unit. I genuinely loved the product and was hoping to get it fixed if possible. That’s when Sean reached out to me. While the company doesn’t have technicians available nationwide, he went above and beyond by offering to send me a replacement unit—something I honestly didn’t expect. Thankfully, I received the new dispenser, and it’s working perfectly.I’ve recommended this product to several family members, and two of them have purchased it as well. So far, they’ve had no issues and are just as satisfied.Once again, thank you, Sean, for your help. I’ll continue recommending this product to family and friends with full confidence.

We upgraded from another on this list this weekend, a 7 stage with pump, because of the 500gpd claim vs the one I installed a couple of years ago 150gpd.If you only need this for drinking water, you're fine with one of the other filters. We fill a lot of humidifiers and plant watering jugs on top of drinking water. With the old 7 stage we could fill one console evaporative humidifier tank and then have to wait about 15 minutes to fill the next because the pressure would drop a gallon or so in to a trickle. With this new 500gpd it's continuously over 80% of the pressure of the last one.One caveat from my experience though. I had installed a new beefier garbage disposal since I installed the last RO filter and so could not pull the old tank out. The newer tankless option actually supports a tank, it just doesn't come with one. Rather than remove the disposal, I just reused our old tank and pulled the plastic plug from the tank connection. Our tank needs to be topped off with some more air, but I haven't done it so we're probably operating on 70% usable capacity, so I really don't know how much the tank helps here. I do know that having a tank, while it will take up more room, is extremely nice if the city cuts off your water main.Upgrade note: I just assumed I could leave all of my existing lines and adapters. The tankless one has a larger than usual intake line, it might be double the OD, so it did take some time to swap out the cold water intake line.